This circuit has only two stages of amplification. The front stage is a 6N3 common cathode amplifier. 6N3 is a medium μ (35) amplifier tube with a small gate negative voltage. The cathode is connected'...

The working principle of this protection circuit is as follows: In the attached figure, the operational amplifier ICLM324 is connected as a voltage comparator. The current transformers TA1, TA2, and T'...

The Sugon new 2A3C is an improved version of the factory's 2A3. Its main features are that it adopts some features of the large single screen 300B, and its sound quality is also better than the tradit'...

This power amplifier circuit is shown in the figure. The base operating voltage of the input pole (9014) is equal to the midpoint voltage of the two output pole transistors, which is generally half of'...

The device is in a detection state after the gas is ignited. Once the gas stove is extinguished by itself, it can automatically ignite continuously and send out a music alarm.

This detector circuit is simple, highly sensitive, and has temperature compensation function. The circuit is shown in the figure. The integrated operational amplifier, gate circuit, and resistor and c'...

The function of this circuit is that after the trigger switch is turned on, the alarm will sound to alert people; the sound will not stop until someone presses the release switch AN. Circuit diagram..'...

The reminder circuit keeps the driver awake by sending beeps and flashing lights intermittently. The reminder only works at night and automatically turns off during the day. LDR1 and two...

I decided to redesign a circuit (of course, based on the most commonly used 555), using a variable resistor to change the frequency and a piezoelectric buzzer that can make a relatively loud enough so'...

　This energy-saving LED dimming desk lamp light source changes the traditional incandescent bulb, using a 1W high-power and φ5mm low-power light-emitting diode hybrid component, and the dimming circui'...

The rFPICl2C509AG/509AF is a single-chip RF wireless data transmitter with an embedded 8-bit CMOS microcontroller. It can be used for remote keyless entry (RKE) transmitters, garage door openers, tele'...

MAX2440/MAX2441/MAX2442 are low-cost, highly integrated front-end receiver chips for 900 MHz cordless telephone and ISM channels. The main technical features are as follows: ?The input frequency is...

The figure shows the ISO113 circuit for reducing power consumption. For single-channel or multi-channel synchronous applications, the VCC1 current is required to be less than ±15mA. An oscillator can '...

At present, the output power of mainstream audio amplifier integrated circuits is generally not very large. Except for some STK thick film amplifiers, it generally does not exceed 1OOW. For home audio'...

Quasi-digital amplifier circuit, not only its power amplification process adopts digital method (PWM), but also the volume adjustment is digital. As shown in the figure, it is a quasi-digital amplifie'...

As shown in the figure, the circuit is based on the Burr-Brown 3652 isolation amplifier. The isolation and non-isolation parts of 3652 are powered by a dedicated power supply 722, which generates two.'...

The figure below shows the interface circuit between 8255A and MCU. In 8255A, D7~D0 are used as address ports, AO~A1 are used as address ports, WR (the inverse), RD (the inverse), CS (the inverse), an'...

Switching power supplies are gradually replacing continuous working power supplies manufactured using traditional technology due to their advantages such as small size, light weight, high efficiency, '...

The circuit consists of a four-to-two input Schmitt trigger CD4093 and two sound circuits. The three gates D1~D3 in CD4093 and the buttons SA1~SA3 form a logic control circuit, which is used to trigge'...

CAN bus is a serial multi-master controller area network bus. Its main principle is to connect all the relevant controllers on the vehicle to realize the engine controller, transmission controller, AB'...