200W ATX Power Supply CircuitThis an ATX power supply circuit diagram, dedicated for personal computer, but you may use this power supply for other electronic devices. The circuit is built using chip TL494, and will give you approximately 200W. It use push-pull transistor circuit ...
Flashing battery monitorHere is a simple battery monitor circuit in which the LED will continue flashing until battery voltage is above the level. Transistors Q1 and Q2 are wired as an astable multivibrator circuit. This flashing battery monitor circuit can operate from a variety of voltages from 6V to12V. The voltage level at which an LED stops flashing can be set by adjusting R4. When the a preset battery voltage reaches threshold flashing frequency decreases andwhen the voltage drops below the threshold of the diode D1 LED turns OFF. This is used to compensate for changes in voltage of the base emitter Q1 due the ...
DC power supply 3-30V 3-30V 3A stabilizedThis DC power supply circuit diagram is designed as an additional or as a permanent power supply for all general circuits based on a stable DC voltage between 3 and 30V provided that current consumption does not exceed 3A. Of ...
Converter 12 Vdc to 230 Vac or InverterAs shown in the Inverter circuit diagram obove , Its used as the oscillator stage astable multivibrator contained in IC1, a CMOS 4047 (this cult series 40xx series) by varying the resistance value of R1 trimmer (220 k total resistance) ...
Car Battery Monitor with 3 LEDCar Battery Monitor circuit description: This is a circuit diagram of the 3 LED bar graph type battery monitor ideal for monitoring the voltage level of the car battery voltage with battery. When the battery voltage is 11.5V or less ...