Create continuity tester circuit with buzzer and LED for check solder joint defects, not kill components on PCB, as probe gives tiny current and voltage. Read more
Imagine your dad is old. Sure, he hears anything weak sound.
How do you do?
You are an electronics inventor, right?
Yes, you can try to make a tool. To help him back to listen to great music again.
This project is small, use only one 1.5V battery. Using normally components you can buy in stores near you. Read more
This is a simple DC to AC Converter circuit,to converts 12VDC to 220VAC 50Hz/110V 60Hz as adjust frequency output using CD4047,MOSFET,power transistor and more Read more
This is many LED flasher circuit and with PCB layout using transistors astable multi vibrator as low frequency oscillator below more…[…] Read more
Power up smart. Increase your time easily! Read more