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What is the LM386 Audio Amplifier?
The integrated chip LM386 is a low-power audio amplifier that requires a low-level power supply (usually a battery). It is packaged in an 8-pin mini-DIP pack...[Details]
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The circuit is shown in the figure below. UC3842 is a single-ended switching power supply control chip. Pin ① is the internal error amplifier output terminal, and a negative feedback network is c...[Details]
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The dishwasher adopts microprocessor control. Its operating voltage is 220V. The motor power of the cleaning pump is 120W, the motor power of the drainage pump is 60W, and the power of the heater i...[Details]
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Once upon a time, when we were buying a mobile phone, we often paid attention to the brand, appearance and functionality of the mobile phone. However, with the increasing popularity of smart phon...[Details]
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1. Introduction
For traditional indoor sound reinforcement systems, the mode is generally that the microphone picks up the sound, then sends the signal to the power amplifier for amplification, a...[Details]
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The Wien bridge sine oscillator circuit uses the junction field effect tube 2N5457 as the variable resistor of the amplifier feedback circuit, which will produce a slight distortion, and the constant...[Details]
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Recently, CATL's first overseas factory in Thuringia, Germany, achieved mass production of lithium-ion battery cells as scheduled, marking a milestone breakthrough in CATL's global development....[Details]
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The audio market is constantly undergoing various changes. At the same time, the digital market (Internet, digital networks, wireless digital communications) has also undergone tremendous changes...[Details]
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LED is a typical current-driven device. Accurately controlling the LED driving current can determine many parameters including light efficiency, power efficiency, heat dissipation and product brightne...[Details]
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1. Operation steps
1. Check the inverter model, rated capacity, rated voltage, adapted motor power and main technical data on the nameplate, especially the rated voltage.
2. Open the inve...[Details]
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Recently, North (Tianjin) Systems Co., Ltd. announced that it has successfully completed nearly RMB 400 million in equity financing. This round of financing was jointly completed by Zhongke Investmen...[Details]
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LD7209 is an LED driver. This series of components can drive 3 to 8 WLED backlights and provide 38V open circuit voltage protection. It can be used in small-size screen backlight LEDs powered by li...[Details]
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M24LR64 can be regarded as EEROM, and STM8L101 microcontroller can read and write it through IIC interface. However, when debugging, the address of M24LR64 is wrong. After sending the device selectio...[Details]
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ARM floating point operations
1: Types of floating-point operations implemented by ARM
There are three ways to implement floating point operations on ARM, and these three methods are usually...[Details]
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OBC, DCDC, PDU
Constituting the “three small electrics” of new energy
Due to the different power systems, the "three electrics" of new energy vehicles have replaced the fuel tank, engine,...[Details]
Analog electronics
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