Electronic plans news for electronic hobbyist or engineers. Free electronic schematics (circuits) electronic blog site. Electronic content post and more..
Many speaker crossover schematics are available in PDF format from Aaron Audio’s archive page. Passive crossover circuits are filter circuits that separate the audio signal coming from an amplifier into..
Although a stereo structure is often sufficient in home audio systems, a four-channel, that is, quadraphonic amplifier can provide a wider listening area and surround sound effect. In this project,..
The JHL 1969 Class A headphone amplifier is a fully transistorized stereo headphone driver that operates with a ±12V symmetrical supply and draws continuous current. It is suitable for those..
A simple AM transmitter circuit that can be built with low-cost components and is stated to be capable of shortwave broadcasting over an area of approximately 13 km in diameter…
Automatic Lighting On/Off Circuit at Twilight. A device was needed for the LED lamps my friend connected in the garden, one that would apply voltage in the dark and cut..
2kVA, 4kVA PFC-supported Amplifier SMPS circuits. The SMPS PWM stage is controlled with SG3525, and the high voltage PFC stage is controlled with NCP1653A. It has a symmetrical +- 90..
The 6 Watt FM RF amplifier circuit with 2SC1971 is a VHF power stage designed to increase the output of low-power transmitters operating in the 87.5-108 MHz FM band. With..
Battery level indicators added later to 3S 25A BMS boards used in cordless drill batteries may seem like harmless modules that draw very low current at first glance. However, when..
Years ago, I had built a TDA7265 amplifier circuit, but I did not know it was this good at that time. Back then, high power was more interesting, and I..
A TDA7294-based subwoofer amplifier design prepared for in-car use. The TDA7294 IC is used in the output stage, and the circuit can deliver approximately 100W level power. Since a high..
