Electric tools

How to connect the volt meter: How to connect the volt meter. we can measure voltage and ampere. this meter can run 5-25 voltages. we can see it has 2 types of wire. two-socket has in this meter. 1st socket has 3 wires. Red, black, and yellow. The red and …

how to make a voltage regulator using a transistor: Today we are going to learn how to make a DC regulator. it’s a very simple project. We need only an NPN transistor. here we use TTC 5200 transistor. and we need one 100k variable. we can control 6 voltage to …