Simple diagrams. Page 3

A simple induction heater consists of a powerful high-frequency generator and a low-resistance coil-circuit, which is the load of the generator. A self-excited generator generates pulses based on the resonant frequency of the circuit. As a result

The simplest computer microphone is a Chinese capsule connected to the input. This capsule microphone is also powered by the computer input. It consists of a condenser microphone with a field-effect transistor amplifier. The sensitivity of such

How tightly Li-ion batteries have entered our lives. The fact that they are used in almost all microprocessor electronics is already the norm. So radio amateurs have long adopted them and use them in their homemade products. I contribute to this

Here is a simple scheme for automatically turning on the fan and controlling its speed depending on the temperature of the sensor.This simplest circuit, consisting of only two elements, can be used in your amplifiers, power supplies, computers and

There is a strong need to make the LED blink to enhance attracting a person’s attention to the signal. But to make a complex circuit there is simply no time and space to place radio elements. I'll show you a diagram consisting of just three, which

This simplest light music has only one element. Yes, absolutely alone and nothing but: no resistors, no transistors... It is quite possible to assemble such a light and music installation in 30 minutes. All you need is one solid state relay.

I can say without a doubt that this is the simplest metal detector I have ever seen. It is based on just one TDA0161 chip. You won't need to program anything - just assemble it and that's it. Another big difference is that he

This wall lamp provides smooth and even illumination. This is achieved by the fact that light is reflected from external obstacles and scattered. If desired, such a unique lamp can be assembled in about 30 minutes, having everything at hand, of course. This wall

A cell phone signal detector can detect the presence of an activated cell phone from a distance of about one and a half meters. Thus, the detector can be used to prevent the use of mobile phones in exams, in

Probably everyone, even a novice radio amateur, knows that in order to connect a regular LED to a power source, you only need one resistor. But what if the LED is powerful? Watt so 10. What to do then? I'll show you a way to do it

LEDs have long replaced incandescent light bulbs in almost all areas. This is understandable: LEDs are brighter than lamps, given their energy consumption. But LEDs also have a number of disadvantages. Of course, we won’t talk about everyone, but

I have never seen an inverter circuit simpler than this one. To repeat, you will need a minimum of parts - no more than 10 pieces. To obtain an output voltage of 220 volts, we need one 1.5 volt AA battery. Inverters

An AC voltage detector is a device that detects the presence of alternating current, over a short distance, without any electrical connections to the line. This simple device will help you determine the presence of a life-threatening