An example of an LC oscillation circuit, LC circuit: This circuit is also called a resonant circuit, a tank circuit or a tuned circuit. It is a circuit that consists of an inductor (represented by the'...

This article introduces the circuit and maintenance information of a gas stove igniter produced by Nantong Transistor Factory. Its circuit schematic (see attached picture) was drawn based on the actua'...

The schematic diagram of the baby alarm circuit is shown in the attached figure. In the figure, inverters I, II, and III are three units of the six-inverter CD4069. Inverter I and its peripheral compo'...

As shown in the figure, this is a rectangular pulse frequency multiplier circuit. This circuit is a digital frequency multiplier, which consists of a six-phase inverter MC840P, two diodes and a capaci'...

The circuit working principle of the device is shown in Figure 6. When the power switch S is not turned on, the ground is on. Due to the delay effect of RC, at the beginning, the ③ and ④ feet of the 5'...

As shown in the figure, it is a 824~849MHz power amplifier circuit composed of RF2152. The radio frequency signal (RF) is input from pin 6, and after being amplified by the preamplifier and the final '...

The main control element of the volume controller in this example is an optocoupler, which controls the brightness of the light-emitting diode in the optocoupler to change the resistance value of the '...

An operational amplifier is an amplifier with two input terminals and one output terminal. It amplifies the voltage between the two input terminals at a very high rate and then transmits it to the out'...

The power lead of each integrated operational amplifier should generally adopt decoupling bypass measures, that is, a high-performance capacitor is connected from the power lead end to the ground, as '...

The circuit shown in Figure (a) is different from the general inverting amplifier circuit only in that a 100kΩ potentiometer is connected in series between the feedback resistor input terminal and the'...

This electronic dimming switch controls the dimming and on/off operation of incandescent lamps by touch. Each time the electrode is touched, the light brightness changes in a 4-step cycle: slightly br'...

The timer uses CD4541 as its main component, and it can select in advance through the switch whether to stop first and then start, or start first and then stop.

When using LM317T to make an adjustable voltage-regulated power supply, the output voltage often increases and burns the load due to poor contact of the potentiometer.

TL494 inverter circuit diagram, 12V working voltage, different output transformers can output different voltages, replacing the power tube and choosing a suitable transformer can make the output sever'...

This article introduces a method for making a wireless proportional motor remote control. It uses easy-to-buy components and has the characteristics of simple principle and reliable performance. Figur'...

Electronic dimming circuit can be used to adjust the brightness of the bulb to meet different lighting requirements. The figure below is an electronic dimming circuit. This circuit is a thyristor volt'...

Working principle: The electrical principle of the lamp is shown in the figure. It is a typical push-pull DE/DE converter, which consists of IC1 pulse width modulation switch controller and peripheral'...

This is a simple and easy to use electronic candle circuit built using TTL (Transistor-Transistor Logic) of 74LS164, 74LS86 and 74LS00. This circuit will produce a candle light effect in a normal 220V'...

Recently I designed a microcontroller development board based on ESP32. I tested the board with different programs and Wi-Fi sharing. Now in this article I will show the schematic, circuit assembly an'...

This is an easy to build and very low cost circuit designed to protect your electronic devices/devices such as PCs, TVs, recording equipment, refrigerators and other appliances during sudden trips and'...