Circuit diagrams and schematics - Electronic projects

This circuit is DC to DC converter model step down voltage. That can modify voltage input 12V DC from be DC 6V , 7.5V and 9V by have the size current about 1A – 2 Amp think. Be easy circuit use Zener diode maintain one’s position voltage. Be stable and have transistor 2N3055. Perform enlarge [...]

This is 5 Volt Linear power supply regulator circuit. It uses electronics part that seek easily have no zener diode , and the integrated circuit use Transistor 2N3055 and other. Which seek easily use diode perform heal voltage be stable. By diode 1N914 number uses 1N4148 number can replace. For Transistor 2N3417 use the number [...]

This is AC Inverter. Input 12VDC from car battery to output 220V AC 50Hz or 60Hz at Square wave signal. The main part is IC CD4047 and IC LM358 and Transistor 2SC1061 and 2N3055. The transformer is 12V-012V Primary : 220V Secondary. and current 3A up for power output than 100W. Note: C1 = 0.1uf [...]