![Automotive 12V to 5V USB charger assembled PCB]
This project presents a nominally 12V to 5V step down power adapter for use in a motor vehicle to supply 5V at up to 2A from a USB socket.
It is intended to be plugged into a cigar lighter socket in a car or other vehicle and can be used with any device that is normally charged from a 5V USB power outlet at up to 1.8A.
Although most rec...
This Is Very Easy To Make And It Work Very Good I'v Tested this to 2.5 amps load good result
This circuit was "reverse engineered" from a cheap 5V USB charger circuit. Voltage regulation is by a zener diode and opto-isolator coupling the primary and secondary. The circuit includes 4 zener diode models from 2.4 to 5.1V
The aim of the project was to explore how SMPSs operate
These are good primers