POWER ELECTRONIC PROJECTS Archive

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..

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..

With the widespread use of portable devices, seeing the real capacity of single-cell Li-Ion and Li-Pol batteries in the 3.7V class has become more important than ever. A battery that..

The phase-controlled photovoltaic excess energy router circuit gradually transfers the energy at the inverter’s 230V AC output to a resistive load when the battery voltage rises above the set level…

The light switch-off delay circuit is a 230V AC compatible MOSFET timer that keeps the LED lamp on for a short time after the wall switch is turned off. It..

Different types of power supply projects developed for laboratory and experimental electronics applications. These projects, ranging from low-voltage symmetrical power supplies to high-current-capacity laboratory supplies and special power supplies that..

Relay Transformer Mains Voltage Stabilizers Voltage Regulator Circuits designed for different types of mains voltage regulator stabilizers, especially relay–transformer-based solutions. There are threshold detector circuits used to control the relays..

Staircase light switch with 2 different trigger modes. The circuit functions as a classic staircase light switch. When the supply voltage (230V AC) is applied, the system enters standby mode,..

The electronic circuit breaker is designed for retrofitting to direct current (DC) power supplies. Thanks to the use of high-performance STP60NO5 Power MOSFETs, the voltage drop is minimal even at..

Following the older 0-30V 0-5A regulated power supplies, many XXX3005 model power supplies began to show a decline in quality. Through reverse engineering, the schematic of the LWDQGS APR-3005 power..