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…
The TDA7056 chip is a 3-watt low-frequency monophonic amplifier with a bridge output and single-ended power supply. You can see such a chip on the circuit boards of old TVs.…
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…
There are microcircuits in cell phones that amplify a weak high-frequency signal by power, and one of these microcircuits is the RF3140.This microcircuit was used in old cell phones, today…
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…
The BTA16-600 triac is designed for switching loads at alternating current up to 16 amperes.The number 600 indicates that the triac can operate at a voltage of up to 600…
Processor M37705M... this is a sixteen-bit single-chip microcomputer with 64 pins, which can be found on the control boards of washing machines.There are several varieties of processor that differ in…
The KID65003AP chip is a transistor assembly consisting of seven seven Darlington transistors.It is designed to work as a key with an output voltage of up to 50 volts and…
The KID65783AP chip is an 8-channel driver for controlling fluorescent displays, relays, lamps, etc.We send a signal up to 2 Volts to the input of one of the eight drivers,…
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…
Hello everyone.Today, almost every normal household appliance has special filters installed that do not pass interference signals from the 220 Volt network to the device or back from the equipment…
There is a cable for charging phones, tablets and other equipment on sale, which has a backlight, and it does not just shine monotonously, but can change colors and there…
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…
The 1248GB8206 chip.Such a chip is on the control board of unknown household appliances, such as a slow cooker.The characteristics for this chip have not yet been found.
The diode bridge is used to rectify alternating current into a constant pulsating current and is mainly used in rectifiers in power supplies.This is its standard application and nothing unusual…
The S3F9454BZZ-DK94 chip is an 8-bit microcontroller from Samsung and is found on control boards for household appliances, such as aerogrills, induction cookers, etc.It contains Flash memory with a capacity…
The SN74HC164N chip is an 8-bit shift register and has a CLR input and a serial input with logic I. Inputs A and B according to the scheme provide full…