Simple inverter working principle
It has a simple working principle. Click to learn it More Read more
Multi function digital frequency meter circuit 0-100MHz
The Multi function digital frequency meter circuit 0-100MHz, is an instrument that can measurement many things in a single display with LED 7 segment 8 digit. The controls measures sector as well as the display is used a single master IC. Is A good IC of Intersil Corporation. ICM 7226B is a single IC at … Read more
Learn basic DIY fiber optic intercom circuit with PCB
A simple fiber optic intercom communication systems to home use. Video Door Phone Intercom is going to happen in the future. or Meetings monitor route. Read more
Cheap alcohol tester circuit
Party is a lot of fun. Alcohol makes us happy. And. we should make an alcohol tester. Why? We do not need sad about it, right? Imagine your friends who live in California, USA. He said that he likes to party with friends. With alcoholic beverages and the need to drive a car. He does … Read more
Transistors Dynamic Microphone Preamplifier Circuit with PCB
The Dynamic Microphone Preamplifier circuit. So low noise signal,use three transistor (2SC945, or 2C1815 or 2SC828) is transistor amplifier with a low noise […] Read more