More ideas from Gerhard

Water Pump Auto Off and ON - YouTube

Simple Clap Switch Circuit

In this post we are going to discuss a few non-contact voltage detector/tester circuits for checking the presence of active mains live wire. We will be und

Non-Contact Voltage Detector Circuits Using Transistors and IC

How to make an auto cut off 12v battery charger | Updating simple battery charger to auto cut off. - YouTube

home security system with mobile - YouTube

home security system with mobile - YouTube

Battery Current Level Indicator - YouTube

2 CUPS OF THIS DRINK TO FLATTER STOMACH IN ONLY ONE WEEK

How to make Speaker Protector Circuit with DC Protection – Speaker protector diagram