When an overcurrent flows, the gate is controlled to block the overcurrent (for protection), making it possible to "implement safely without destroying the components". In the figure, once...

The circuit is shown in the figure. The mains power is stepped down by C5, R7, R8, rectified by VD7~VD10 and stabilized by VD11 to provide the circuit with working voltage. When the electric iron is p'...

MAX2366/MAX2367/MAX2368 is a complete transmitter chip using orthogonal modulation. MAX2366 supports dual-band three-mode operation, its IF PLL, RF PLL and working mode...

As shown in the figure, this is the audio power amplifier circuit of LM4835/4838. The stereo left channel audio signal is input from pin 9, and the stereo right channel audio signal is input from pin '...

Figure a shows a basic single-limit comparator. The input signal Uin, that is, the voltage to be compared, is added to the non-inverting input terminal, and a reference voltage (threshold level) Ur is'...

The basic VFC shown in the figure below consists of an integrator (IC1) and a Schmitt trigger circuit (IC2). The Schmitt trigger is a special gate circuit. Unlike ordinary gate circuits, the Schmitt t'...

This project shows how to design a wireless remote controlled two wheeled robotic rover using ESP8266 and Arduino Uno.

The circuit is shown in the figure below. Water enters the motor and submerges probe A. The water connects A to the housing, and relay K closes, the normally closed contact opens, KM loses power and r'...

The remote control socket is mainly composed of three circuits: power supply, infrared receiving and processing, and socket power on and off. The principle is: when the remote control socket is plugge'...

Figure 1 is a hybrid power amplifier designed by the author using the domestically produced tube 6N11, which may be a good reference for the majority of tube amplifier enthusiasts. Figure 2 is the pow'...

To achieve high power, the power supply capacity must be large. The power supply configured in this amplifier is a toroidal transformer wound on a toroidal core with a cross-sectional area of ??35mm ×'...

The low cost mosquito repellent circuit uses only one IC, the CMOS type 4047. This very versatile IC can be connected to a number of operating modes including the multivibrator used here or the astabl'...

Below is the schematic diagram of the Active Tone Control circuit or we often call this circuit as "ACTOR". This circuit is very simple, easy to build and cheap, you can build this circuit with minima'...

There are some applications that could be implemented with just an ideal op amp, but cannot be achieved in practice with just a real-life device due to certain physical limitations. Fortunately, it is'...

What I am going to make is a mini but fully functional clock, which also has RGB effects and temperature monitoring functions.

This project is a real-time plant monitoring system that can check temperature, light and humidity. It is made using MKR1000, the standard Firmata Wifi sketch, and Johnny-Five and Node.js.

This article will discuss phase shift, the effect of a circuit causing the voltage or current to lead or lag from input to output. In particular, we will focus on how reactive loads and networks will '...

This circuit is powered by a solar panel, which provides you with a pure regulated DC voltage of 5V. The solar cell power supply circuit consists of an oscillation transistor and a voltage stabilizing'...

This wirelessly controlled robot car uses gestures: the tilt/direction of the hand to drive forward, backward, left or right. In this project, the accelerometer is connected to an Arduino Nano and att'...

The figure below is the basic circuit of a stepless voltage regulation charger. During production, the capacity of the rectifier transformer, secondary voltage, rectifier diode, etc. can be selected a'...