InPowered battery charger circuit diagram schematic 6V-12V using NE555, LM7812, 2SA671, 1N4002, BC549 auto battery charger circuit On a lithium-ion cell, 3.8V/cell indicates a state-of-charge of about 50%. It must be noted that utilizing voltage as a fuel gauge function is inaccurate because cells made by different manufacturers produce a slightly different voltage profile. This […]
Archives for Power supply
Make a simple power amplifier-BC547 – 1watts
Make a simple power amplifier-BC547 – 1watts This circuit is probably my most used AF power amplifier circuit in my own homebrew equipment.This circuit will deliver the full 1 watt output with about 400mV RMS of drive voltage, but for other input levels you can set the gain by adjusting the value of R8. The […]
Schematic Block Diagram circuit Satellite Receiver
The Dish Network 322 Satellite Receiver accommodates television viewing of two different programs in two different locations. This is a schematic block diagram of an exemplary circuit logic diagram . The receiver can predict the elevation angle of each Schematic Block Diagram circuit Satellite Receiver
It is a termostat for a peltier cooler !
It is a termostat for a peltier cooler ! using LM358, IFR530 It is a termostat for a peltier cooler ! Piezo buzzer Circuit using LM358, IFR530
Circuit HAMCOMM MODEM
The program only needs a simple “infinite gain” circuit to square off the input tones so that they can be read by the serial port. This is achieved using a 741 operational amplifier. The basic circuit of the unit is given below. The RS232 pins are given for a 9-pin serial port. A 25-pin port […]
