How to make a practical tester for car electricity? (with buzzer)
There are many tools for testing electronic boards. But making simple tools is very enjoyable considering that it also saves our money.
We need a tester to test the wiring of the car. The simplest tester that shows the positive and negative voltage in the car wiring consists of two LEDs. But we can add the horn sound to it with the help of diode bridge and buzzer.
But how does this circuit really work?
When there is a positive voltage on both sides of the LED, how does the LED light up?
In this video, we explain the reason.
Subscription link:
/ @electronic4u-david
To access pcbway.com website services, click on the following link:
https://www.pcbway.com
00:00 Basic circuit test
01:30 circuit analysis from the schematic