One of the common hobbies of amateurs and professionals in the field of electronics is the design and manufacture of various homemade products for the home. Electronic homemade products do not require large material and financial costs and can be done at home, since work with electronics is, for the most part, “clean”. The only exception is the manufacture of various body parts and other mechanical components.
Useful electronic homemade products can be used in all areas of everyday life, from the kitchen to the garage, where many are engaged in improving and repairing car electronic devices.
Homemade products in the kitchen
Kitchen electronics crafts can be a complement to existing accessories and fixtures. Industrial and homemade electric kebab makers are very popular among apartment residents.
Another common example of kitchen homemade products made by a home electrician is timers and automatic switching on of lights above work surfaces, and electric ignition of gas burners.
Important! Changing the design of some household appliances, especially gas appliances, may cause “misunderstanding and rejection” by regulatory organizations. In addition, it requires great care and attention.
Electronics in the car
Homemade devices for cars are most widely used among owners of domestic brands of vehicles, which are distinguished by a minimal number of additional functions. The following schemes are in wide demand:
- Sound indicators for turns and handbrake;
- Battery and generator operating mode indicator.
More experienced radio amateurs are equipping their cars with parking sensors, electronic window drives, and automatic light sensors to control low beam headlights.
Homemade crafts for beginners
Most novice radio amateurs are engaged in the manufacture of structures that do not require high qualifications. Simple proven designs can serve for a long time and not only for the sake of benefit, but also as a reminder of the technical “growing up” from a beginner radio amateur to a professional.
For inexperienced hobbyists, many manufacturers produce ready-made construction kits that contain a printed circuit board and a set of elements. Such sets allow you to practice the following skills:
- Reading schematic and wiring diagrams;
- Correct soldering;
- Setup and adjustment using a ready-made method.
Among the sets, electronic watches of various designs and degrees of complexity are very common.
As an area of application of knowledge and experience, radio amateurs can design electronic toys using simpler circuits or modifying industrial designs to suit their wishes and capabilities.
Interesting ideas for crafts can be seen in the examples of making radio-electronic crafts from worn-out computer parts.
Home workshop
To independently design radio-electronic devices, you need a certain minimum of tools, devices and measuring instruments:
- Soldering iron;
- Side cutters;
- Tweezers;
- Screwdriver Set;
- Pliers;
- Multifunctional tester (avometer).
On a note. When planning to do electronics yourself, you should not immediately take on complex designs and purchase an expensive tool.
Most radio amateurs began their journey by using a simple 220V 25-40W soldering iron, and the most popular Soviet tester, the Ts-20, was used in the home laboratory. All this is enough for practicing with electricity, acquiring the necessary skills and experience.
There is no point in buying an expensive soldering station for a novice radio amateur if he does not have the necessary experience with a conventional soldering iron. Moreover, the possibility of using the station will not appear soon, but only after sometimes quite a long time.
There is also no need for professional measuring equipment. The only serious device that even a novice amateur may need is an oscilloscope. For those who already understand electronics, an oscilloscope is one of the most sought-after measurement tools.
Inexpensive digital devices made in China can be successfully used as an avometer. Having rich functionality, they have high measurement accuracy, ease of use and, importantly, have a built-in module for measuring transistor parameters.
When talking about a DIY home workshop, one cannot fail to mention the materials used for soldering. This is solder and flux. The most common solder is POS-60 alloy, which has a low melting point and provides high soldering reliability. Most solders used for soldering all kinds of devices are analogues of the mentioned alloy and can be successfully replaced with it.
Ordinary rosin is used as a flux for soldering, but for ease of use it is better to use its solution in ethyl alcohol. Rosin-based fluxes do not require removal from installation after operation, since they are chemically neutral under most operating conditions, and the thin film of rosin formed after evaporation of the solvent (alcohol) exhibits good protective properties.
Important! When soldering electronic components, active fluxes should never be used. This is especially true for soldering acid (zinc chloride solution), since even under normal conditions such flux has a destructive effect on thin copper printed conductors.
To service heavily oxidized terminals, it is better to use active acid-free flux LTI-120, which does not require rinsing.
It is very convenient to work using solder that contains flux. The solder is made in the form of a thin tube, inside of which there is rosin.
For mounting elements, breadboards made of double-sided foil fiberglass, which are produced in a wide range, are well suited.
Security measures
Working with electricity is associated with risks to health and even life, especially if the electronics are designed with your own hands with mains power. Homemade electrical devices should not use transformerless power from a household AC network. As a last resort, such devices should be configured by connecting them to the network through an isolation transformer with a transformation ratio equal to unity. The voltage at its output will correspond to the network voltage, but at the same time reliable galvanic isolation will be ensured.
Making electronic homemade products with your own hands gained popularity in the last century, when semiconductor devices appeared. With their help, it was quite easy to assemble devices needed for everyday life from old equipment. Today, repair and assembly of equipment for the home or cottage, for a car or garage can also be solved at home.
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Homemade devices for home and garden
Electrical homemade products for home and garden that use the power of electricity can be made by every electrician. Most devices are created from factory components and require only school knowledge of electricity.
Electric kebab maker
The electric kebab maker can be either horizontal or vertical. Stores usually sell vertical ones, and they do their job well after some modification.
To create a horizontal barbecue grill you will need a heating element and a frame resembling a barbecue. The heating element can be made from a ceramic tube and a nichrome spiral wound around it. The tube is secured through an insulating material in a metal casing. Drawings will be required to assemble the case.
Barbecue grill
An equally interesting idea is a kebab grill with an electric drive for rotating skewers. By adding an electric motor to a regular grill, you can get an excellent device that will cook barbecue in autonomous mode. To organize the skewer drive, you can use a motor from windshield wipers, from a washing machine, or any other 12-volt motor. Using a system of pulleys and a belt or gear drive, the rotation of the shaft is transmitted to the skewers, and the meat is slowly turned over the coals.
Homemade WI-FI antenna
This antenna will improve the reception quality and Wi-Fi speed in your home. According to reviews, after connecting it, the signal level rises from 5 to 27 Mbit.
For production you need:
- a small metal sieve or colander;
- Wi-Fi adapter (USB);
- USB cable;
- drill;
- epoxy resin;
- camera tripod;
- plastic clamps.
Manufacturing process:
- We drill a small hole (14 mm) in the center of the sieve and insert a metal pin into it to secure the adapter.
- We insert the connector from the USB cable into the prepared hole and secure it with epoxy resin. The USB connector after gluing must be strictly perpendicular to the plane of the sieve, then the device will work more efficiently.
- Then, using two zip ties, “ears” are made through which the cable is attached.
- We fix the product on a camera tripod. We drill a hole with a diameter of 12 mm in the antenna and tighten it with a nut.
Necessary materials 
Insert the pin into the drilled hole 
Glue the USB cable 
Securing the cable 
Tripod 
Installing the antenna using a tripod
Electrical homemade products for the garage
Let's look at several useful DIY projects for the garage.
Homemade chandelier
If you have poor lighting in your garage, then a makeshift chandelier will be very useful. To make a bifurcating chuck, you will need a pair of angular chucks, which are sold at a regular hardware store.
Sequencing:
- We remove the wires from the sockets and fasten them with a plastic tie. We get a socket for two lamps. All that remains is to connect them to the electrical network.
- To do this, we use the base of a fluorescent lamp. Carefully break out the lamp, then solder the wires from our design to the contacts of the base.
- We insulate them well and attach the base on top of the cartridges.
The use of ordinary light bulbs in this design is undesirable - the sockets may melt from heating.
LED device
Another lighting option could be a homemade LED lighting device.
To make it you will need:
- old fluorescent lamp;
- LED Strip Light;
- connecting wires.
The manufacturing sequence is as follows:
- An LED strip is glued to the lamp body in one or several rows.
- The connecting wires are connected and brought to the lamp switch.
- The assembled device is tested.
Spot welding machine
A necessary device in the garage will be a homemade spot welding machine, the basis of which is a transformer from an old microwave oven. A necessary condition is that the transformer must be working in order not to rewind all the windings.
The process of assembling the welder is quite simple:
- The transformer is dismantled.
- Carefully remove the secondary winding.
- Two shunts are removed.
- A secondary winding of two or three turns is made of thick wire (with a diameter of at least 10 mm).
- Electrodes for resistance welding are made from a copper rod with a diameter larger than the wires.
Homemade spot welding tool
Useful DIY items for fishing
Among the homemade products you can find many interesting ideas for use in camping conditions, as well as hunting and fishing.
Electronic alarm
An example would be an electronic signaling device for fishing with a regular fishing rod or other equipment. A simple biting device can be assembled in just half an hour. For it you will need an old beeper keychain and a strip of plastic 1-2 mm thick.
Alarm assembly:
- The keychain is attached to the rod.
- A strip of plastic is glued to the fishing line and inserted between the contacts of the key fob.
Now when the fish bites, the fish will pull the line, the plastic will fly out, the contacts will close and the key fob will work.
Underwater camera for ice fishing
Using a homemade underwater camera for winter fishing, you can see if there is fish under the hole. And this simplifies the fishing process.
To make it you will need:
- small camera;
- sealed camera box;
- small TV;
- car battery to power the camera;
- extension;
- inverter;
- lead for cargo;
- ultraviolet diodes for illumination during underwater filming;
- superglue, electrical tape, sealant.
Build process:
- Two holes are made in the upper part of the box. An extension cable is inserted through one. Through the second is the wire that connects the camera to the TV.
- There are several more holes in the box into which light bulbs are inserted for illumination. The wires from the light bulbs are soldered into one circuit (for example, with a parallel arrangement), which is connected to a cable that provides power.
- The holes are sealed with glue and tape for a tight seal.
- Melt the lead and pour out small elongated bars from it. They are placed at the bottom of the box.
- Set up the camera and connect it to the cable. After which it is carefully placed in the box so that it has a clear forward and horizontal direction and transmits a high-quality image. For stability, the chamber is surrounded by soft material.
- A torso (rope, belt) is attached to the box, which will be used to lower the camera to depth. For convenience, you can combine it, the power cable and the communication wire between the video camera and the TV into one core, secured with electrical tape.
- Connect the power cable of the video camera to the battery and test the device.
Homemade fish bait
You can make a good bait for fishing yourself. This will be a device assembled based on a simple multivibrator.
You will need:
- sound emitter, for example, from a children's toy;
- wires;
- a small plastic jar, for example, for medicinal tablets;
- electronic board;
- regulator with plastic rod;
- a piece of foam;
- batteries;
- weights for the float;
- volume control.
The bait is assembled as follows:
- You need to solder the circuit and check it.
- Two wires are soldered to the sound emitter. Then they are carried inside the case and connected to the board.
- A regulator with a plastic rod is placed in the lid of the jar.
- A dense circle cut out of foam plastic is installed on top of the board, which separates the board from the battery.
- Weights are attached to the bottom of the jar so that the container floats on the water like a float.
- The regulator sets the frequency and changes the sound.
Bait scheme - 1 
Bait scheme - 2
Electronic homemade products for cars
Car enthusiasts create homemade products with their own hands to improve the appearance and ease of use of the car.
Electrical auto tester
A simple homemade electrical probe is perfect for a car. It can show the presence of a voltage of 12 volts in an electrical circuit. It is used to check the serviceability of relays, as well as light bulbs and other equipment. You can make such a device from a syringe and LEDs.
Assembly diagram:
- Two LEDs are soldered with opposite terminals (plus one to the minus of the other and vice versa).
- A steel probe is connected to one of the solders through a resistance of 300 Ohms. To the other solder there is a contact for batteries.
- The design is inserted into the syringe so that the probe comes out of the hole for the needles. Most of the probe is insulated with a PVC pipe.
- 4 LR44 batteries are inserted into the syringe so that one of the poles is connected to the LED contact.
- The other pole of the batteries is connected to a flexible wire with an alligator clip.
The video explains how to make a syringe tester. Filmed by ILYANOV channel.
Light switch
The scheme for smoothly turning off the lights in the car interior is quite simple to make. Such electronics are suitable for any car. A small board consisting of a capacitor and diodes is soldered parallel to the interior lamp terminals. The drop in electricity voltage will occur gradually and create the effect of a gradually fading light.
Car subwoofer
To make a car subwoofer with your own hands, you must first purchase a speaker. You need to start from its dimensions when calculating the size of the case.
The simplest and most suitable form of a subwoofer for the trunk is a truncated pyramid with a slope similar to that of the rear seats.
LED fog lights
You can make LED car foglights with your own hands.
For creativity you will need:
- two ten-watt LEDs;
- 2 lenses from an old projector;
- gaskets from plastic pipes;
- LM317T microcircuits;
- resistors.
Instructions for assembling the craft:
- LEDs are installed on pre-prepared aluminum radiators.
- The structure is assembled from headlight housings, lenses from projectors, gaskets and diodes on radiators.
- The fog lights are powered through current stabilizers on LM317T microcircuits and resistors.
Car carrying
A very convenient car carrier is made from a computer USB lamp. It is compact and you can connect the device to any place in the car wiring.
Manufacturing scheme:
- Remove the contacts from the USB plug.
- In the plug body we connect the wires of the lamp and the car alligator clips.
- To mount it in the right place (even horizontally), a magnet is placed on the plug.
For those just starting to take their first steps into electronics, it is important to start somewhere. Well, we invite you to familiarize yourself with ideas that may come in handy in the future and at the same time give you an idea of how something should be done. What to choose if you want to make simple ones with your own hands? Here are options that can be used in everyday life.
Simple power regulator for smooth switching of lamps
This type of device has found wide application. The simplest is a regular diode, which is connected in series with the load. Such regulation can be used to extend the life of an incandescent lamp, as well as to prevent overheating of the soldering iron. They can also be used to change power over a wide range of values. First, there will be the simplest DIY electronic crafts. You can see the diagrams here.
How to protect yourself from mains voltage fluctuations
This device turns off the load if the mains voltage is outside the permissible limits. As a rule, a deviation of up to 10% from the norm is considered normal. But due to the peculiarities of the energy supply system in our country, such limits are not always observed. So, the voltage can be 1.5 times higher, or much lower than necessary. The result is often unpleasant - the equipment fails. Therefore, there is a need for a device that will turn off the load before something has time to burn out. But when creating such a homemade product, you need to be careful, since the work will be carried out with considerable stress.
How to make a safety transformer
Transformerless power supplies are often used in various electronic designs. Typically, such devices have low power, and to avoid electrical injury, they are placed in an insulating plastic case. But sometimes they need to be configured, and then the security is broken. To avoid possible injury, use an isolating safety transformer. It will also be useful when repairing such devices. Structurally, they consist of two identical windings, each of which is designed for the network. As a rule, the power of transformers of this type ranges from 60-100 W; these are the optimal parameters for setting up various electronics.
Simple emergency lighting source
What should you do if you need to ensure that some area remains illuminated in the event of a power outage? The answer to such calls can be an emergency lamp made on the basis of a standard energy-saving lamp, the power of which does not exceed 11 Watts. So if you need light somewhere in the corridor, utility room or workplace, this homemade product will come in handy. Usually, if there is voltage, they operate directly from the mains. When it disappears, the lamp begins to function on battery power. When the mains voltage is restored, the lamp will work and the battery will automatically charge. The best electronic DIY projects have been left for the end of the article.
Boost power regulator for soldering iron
In cases where it is necessary to solder massive parts or the mains voltage often drops, using a soldering iron becomes problematic. And a step-up power regulator can help out of this situation. In these cases, the load (i.e., the soldering iron) is powered using rectified mains voltage. The change is carried out using an electrolytic capacitor, the capacitance of which allows you to obtain a voltage greater than 1.41 network voltage. So, with a standard voltage value of 220 V, it will give 310 V. And if there is a drop, say, to 160 V, then it will turn out that 160 * 1.41 = 225.6 V, which will allow for optimal operation. But this is just an example. You have the opportunity to make a scheme that is suitable specifically for your conditions.
The simplest twilight switch (photo relay)
As new parts are created, fewer components are now needed to make a device. So, for a regular twilight switch, only 3 of them are needed. Moreover, thanks to the versatility of the design, multi-purpose use is possible: in an apartment building; for lighting the porch or courtyard of a private home, or even a separate room. Pointing out the features of such a design as a twilight switch, it is also called a “photo relay”. You can find many implementation schemes that were made either by amateurs or industrialists. They have their own set of positive and negative properties. Negative properties are usually either the need for a constant voltage source or the complexity of the circuit itself. Also, when buying cheap and simple parts or entire sets, they often complain that they simply burn. The functionality of the scheme is based on three components:
- Photocell. It is usually understood as photoresistors, phototransistors and photodiodes.
- Comparator.
- Triac or relay.
When there is daylight, the resistance of the photocell is low and does not exceed the response threshold. But as soon as it gets dark, the structure will be turned on at that very moment.
Conclusion
Here are some interesting electronic crafts you can make with your own hands. The main thing in cases where something doesn’t work out is to keep trying, and then everything will work out. And after gaining experience, it will be possible to move on to more complex schemes.
Making something useful out of unusable children's toys or household appliances is not a problem for a dreamer. And it’s good that many electrical appliances become outdated and break down. It makes no sense to send such things for repair - it’s easier to buy something new. And true “homemade people” are just waiting for this. They immediately have a whole bunch of ideas that require immediate implementation.
Second life for children's toys
There are times when a self-propelled toy breaks into pieces. Probably, in order to calm the child down, you urgently need to buy a new one? Not at all necessary. You just need to start the process of family-wide creative thinking. And to do this, remove the remaining usable parts from the broken car along with the motor. Then collect all the toys in the house and choose the one that can be brought to life again. Probably, here you will need school knowledge in physics, chemistry and electrical engineering.
Repair of an old helicopter
Suddenly an old forgotten helicopter with an unusable engine and broken blades, which had long been lying on the mezzanine, caught my eye. He apparently waiting for my finest hour and now with pleasure showed off the blue and white sides with the half-erased inscription “USSR-0098”.
Such things must be handled carefully. The old man doesn't like fuss. You will have to carefully remove the remains of the large main screw by unscrewing several small screws. To get into the engine compartment, you need to remove the plastic battery box from below. The engine is held on by three bolts and, as expected, has two wires “plus” and “minus”, which are connected through a chip block to the power switch. All this must be carefully unsoldered and unscrewed.
Having pulled the engine out to a white light, you need to inspect it and compare it with the motor from the car. The fact is that to create lift, 250 -270 rpm is enough. and power 1 - 2 watts. The difference in engine characteristics turned out to be small. Then you can safely install a fresh engine on the helicopter. And then go to the model shop for a brand new main rotor. When everything is ready, the repaired rotorcraft is tested in the presence of the entire creative family.
Modern children's helicopter models are repaired using the same scheme. Only now they are radio-controlled, and therefore you will have to fork out money for a control panel, on which the rotor speed and the speed of the helicopter depend.
New engine for toy car
In order to make a small children's car, you need: wheels, the car body itself, wires, a control panel, various electronic boards and a motor. If you have all this goodness, they begin to create a model. There is no need to look for the engine, since it is already there. The car body itself can be make it yourself made of wood or plastic and decorated to your taste. It’s good for those craftsmen who have a small 3D printer in their home that can build any shape of model.
Often the machine is made quite simply. They take a long-abandoned small children's car with wheels, disassemble it down to the screw and try to automate it using a ready-made motor. The following are used: glue, electrical tape, small gears from watches, gearboxes from old models and much more. And people for whom such fun has become a real hobby often achieve great success in making homemade motors.
When several new models of children's cars have been made and tested, all that remains is to do something generally useful. It is necessary to design a fan that would freshen the air and inspire new ideas. For this you need just a few items that are at hand. Namely:
- a motor from a children's toy (you can't go anywhere without it);
- CD discs, 6-7 pieces;
- plastic bottle cap;
- cardboard tube approximately 10 cm high and 3 - 4 cm in diameter;
- switch;
- glue.
Manufacturing begins by cutting the disk into 8 equal parts from the edge to the center, not reaching approximately 1.5 cm from the hole. Then the resulting sections must be turned with one edge outward to form blades. The manufactured disk is placed on a plug, inside of which a hole is made for mounting on the motor.
Now they are making the leg and stand. A cardboard tube can easily pass for a leg. Wires and batteries will be hidden inside it. The remaining few disks can serve as an excellent stand. All this is well glued and painted in different shades. The fan is ready for operation.
Motorized ship
In order for the child not to hang out at the computer for days, he needs to be gradually accustomed to making various and interesting things that he can make with his own hands. Spring is coming, the streams will run, and you will need a small boat that will symbolize the coming long-awaited warmth.
Necessary materials The child will find it in his room. Here you need:
- AA batteries 3 pieces;
- polystyrene foam, electrical tape, glue;
- motor from a CD drive or toy;
- plastic cap from a lemonade bottle;
- two pieces of plastic and iron washers.
The first step is to make a propeller. Slots for the blades are prepared in the cork. Flat ice cream sticks are the finished blades of the future boat. Then a hole is made in the plug to fit this screw onto the motor. All this is well glued. The power plant is ready.
Next, the shape of the ship is cut out of the foam. The front part of the boat is made triangular, a place is prepared at the stern for a propeller with a motor, and in the middle there is a recess for batteries. Everything is connected and glued. They carry out tests in the bathroom and look forward to the first spring puddles.
Glider car
This is the most exciting toy created and tested by a child. On the ground, such a machine moves on wheels, and on the water on a special boat. It is made in 2 - 3 hours.
Necessary materials:
They are making a power plant. It is an engine with a propeller. The blades are cut using the neck of the bottle.
It should look like a rose. You can see from the photo that it is then screwed onto a plug attached to the motor.
Then they make the chassis. To do this, use a skewer. They put plugs on it that serve as wheels. They attach everything to a square bottle, inside of which the batteries are placed. Connect with wires according to the electrical diagram. The glider is ready. If desired, you can replace the plastic propeller with a more rigid one. Then the driving performance of such a car will be appreciated not only by the designer himself, but also by his friends.
Crawling robot
Manufacturing the robot takes only a few hours. It's not quite the robot people imagine. He does not walk, does not swim, but crawls chaotically on a smooth surface. This effect is created due to the unbalanced rotation of the motor rotor. For real cars this leads to a tragic accident, but here it only causes a smile.
So, to create a robot you need a motor and a battery. A small oblong piece of foam plastic or foam cardboard is placed on the engine axis and glued. This serves as a destabilizer. To the very tip of it attach a decorative light element.
A battery is installed on top of the motor and covered with various interesting details. They make his legs out of toothbrushes, his eyes out of balls, decorate him with colored wire or paper clips, and so on. When turned on, the engine vibrates significantly, which causes the toy to crawl chaotically.
Other ideas
In addition to all of the above, motors are used in homemade products such as mini drills and drills. Such devices do not require unnecessary parts. They have one task - to rotate the fixed drill.
To do this, select a collet or regular chuck on the motor axis that will clamp a small drill. Then solder the wires from the engine to the batteries through the switch. When the assembled device has successfully worked, it is placed in an antiperspirant case or some other case that is most suitable for a motor with batteries. This whole little device fits in the palm of your hand. The switch is always located under the thumb.
Such devices are necessary for radio amateurs for drilling holes in printed circuit boards. They can also be used by cabinetmakers who engage in fine volumetric wood carving. Only instead of a drill, they insert a finger micro-mill for sampling and grinding hard-to-reach places.
As you can see, with a little imagination and diligence, a child, with the help of his parents, can create truly original toys and other useful things.
Every day there are more and more, many new articles appear, it is quite difficult for new visitors to immediately find their bearings and review at once everything that has already been written and previously posted.
I would really like to draw the attention of all visitors to individual articles that were posted on the site earlier. In order to avoid having to search for the necessary information for a long time, I will make several “entrance pages” with links to the most interesting and useful articles on individual topics.
Let's call the first such page "Useful electronic homemade products." Here we consider simple electronic circuits that can be implemented by people of any skill level. The circuits are built using a modern electronic base.
All information in the articles is presented in a very accessible form and to the extent necessary for practical work. Naturally, to implement such schemes you need to understand at least the basics of electronics.
So, a selection of the most interesting articles on the site on the topic "Useful electronic homemade products". The author of the articles is Boris Aladyshkin.
Modern electronics components greatly simplify circuit design. Even a regular twilight switch can now be assembled from just three parts.
The article describes a simple and reliable electric pump control circuit. Despite the extreme simplicity of the circuit, the device can operate in two modes: water lifting and drainage.
The article provides several diagrams of spot welding machines.
Using the described design, you can determine whether a mechanism located in another room or building is working or not. Information about the operation is the vibration of the mechanism itself.
A story about what a safety transformer is, why it is needed and how you can make it yourself.
Description of a simple device that turns off the load if the mains voltage exceeds acceptable limits.
The article discusses the circuit of a simple thermostat using an adjustable zener diode TL431.
An article about how to make a device for smoothly switching on lamps using the KR1182PM1 microcircuit.
Sometimes, when the voltage in the network is low or when soldering massive parts, it becomes simply impossible to use a soldering iron. This is where a boost power regulator for a soldering iron can come to the rescue.
An article about how you can replace a mechanical thermostat for an oil heating radiator.
Description of a simple and reliable thermostat circuit for a heating system.
The article describes a converter circuit made on a modern element base, containing a minimum number of parts and allowing to obtain significant power in the load.
An article about various ways to connect a load to a control unit on microcircuits using relays and thyristors.
Description of a simple control circuit for LED garlands.
The design of a simple timer that allows you to turn the load on and off at specified intervals. Working time and pause time do not depend on each other.
Description of the circuit and operating principle of a simple emergency lamp based on an energy-saving lamp.
A detailed story about the popular “laser-ironing” technology for manufacturing printed circuit boards, its features and nuances.