With this simple radio microphone, you can transmit sound from the microphone to a distance of 100-150 meters and receive a signal to a radio receiver with an FM band.This…
With this simple amplitude modulated transmitter for long waves, you can broadcast your transmissions over a short distance.The hurdy-gurdy operates at a frequency of approximately 160-180 kHz, which falls into…
During the Second World War, soldiers in Europe used the so-called "trench radio".The radio received this name because of its simplicity of manufacture and soldiers were forbidden to use radios…
This type of lamps is one of the most expensive, but also more durable and safe (it should be, but like others fail), these are 220 Volt LED lamps with…
What was the very first homemade radio receiver that an amateur radio operator had a few decades ago? That's right-detector.There is no simpler radio receiver than this, just one diode,…
The SL6310 chip is a powerful operational amplifier on which a low-frequency amplifier with an output power of 500 mW can be assembled.A microchip is made in a surface-mounted housing…
In one of my articles(https://electronics83.com/index.php/how-to-make-a-magnetostrictive-emitter-and-conduct-experiments-with-ultrasound/) , I told you how to make an ultrasonic magnetostrictive emitter myself and conducted several experiments with it. Based on this emitter, you can assemble…
You can see the light paper or el-panel (electroluminescent panel) in electronic devices such as old mobile phones, car radios, watches and other equipment, where it serves as a backlight…
High-voltage, low-frequency n-p-n transistor 3dd5023 with a resistor between the base-emitter resistance of 50 ohms and a damping diode between the collector and the emitter.Such a transistor can be found…
TV processor TDA11106H1.Such a chip is used in televisions on an Elenberg 2109 type kinescopeHere is a diagram of a TV with this processor.The quartz resonator in the TV was…
The most popular Soviet low-power silicon n-p-n transistor, which is probably known to every amateur radio operator and which can be found in most old consumer electronics, is the KT315…
This chip is a mono hi-fi low-frequency amplifier with an output power of 6W with a unipolar power supply of 24 volts and a harmonic distortion coefficient of 0.5%.It also…