While analyzing the car alarm system, I found an interesting sensor made on a piezoelectric element to which a spring is connected.As you know, if you compress the piezoelectric emitter…
In this article I will tell you how to make 10 simple relay devices.Basically, I will use the relay number 1, relays 2 and 3 will be in two circuits.…
With the help of this high-frequency generator, it is possible to set fire to paper or melt small pieces of metal from the fire of an antenna or one wire.…
This microwave motion sensor will see the movement of a person at a distance of more than 10 meters and notify about it by blinking the LED. The principle of…
With this high voltage generator, you can light fluorescent lamps and conduct experiments with high voltage.In this article, I will present two oscillator circuits, one with a bipolar transistor and…
With this electronic fishing rod, you can fish on winter fishing.Do not be confused with another fishing rod, which is prohibited by law, this device is quite harmless and legal,…
On the basis of a powerful IRF3205 field-effect transistor, you can assemble an original soldering iron with which you can solder, and this will be a touch soldering iron, you…
With this simple device, you can adjust the speed of the drill, grinder, in general, electric motors connected to the 220 Volt network.You can also adjust the heating of the…
A simple battery charger, with which you can charge them and adjust the current at the output of the battery.The device is not assembled very according to the standard scheme,…
The well-known fan cooler, which can be found in household appliances and mainly in computer power supplies, operates at a voltage of 5-12 Volts.But what if the fan needs to…
On the basis of a laser pointer and a motor, you can make a simple laser level, with which you can set a straight line on the surface. This will…
With the help of this electric lighter, which is powered by a 220 Volt mains, it is possible to ignite the gas with a high-voltage spark.Such devices are also called…
There are switches on sale with LED backlight, it shines at night and we find it unmistakably in the dark.You can assemble such a backlight yourself and I will give…
Hello everyone.In this article I will tell you how to make a simple welding of wire twists based on a TS-180 power transformer and a carbon rod from a 1.5V…
Hello everyone.In this article I will tell you how to make a simple but at the same time an excellent soldering iron that works from a 220 Volt AC and…
Hello everyone.In this article I will tell you how to make a simple metal detector on a chip and a radio receiver, how it works and setup. The metal detector…
I decided to assemble a metal detector called Butterfly, which is so popular among novice radio amateurs.This is a metal detector on beats and is nicknamed a butterfly because of…
Hello everyone.This is the most common Soviet transistor, you will find it on most boards of Soviet household appliances and it is called KT315.Several good and simple circuits can be…
This device itself will disconnect the load from the power source during the day and turn it on at night, an incandescent lamp can serve as a load, and such…
In a cooler or fan, which is used in power supplies and other household appliances, there is a chip called fs276 or ats276 or ah276 or maybe even under other…