Simple 12V transistor switching power supply
Can we build the switching dc power supply circuit with 2 transistor? This may be a good choice for you. Read more
Automatic night light circuit using SCR
This automatic night light circuit to controls power on-off in home. If daytime stop working circuit. But at night will working electrical AC 220 volts. […] Read more
Small RF universal remote controls
This small RF remote control or Radio Control (RC) circuit. can install it a toy or automobile, 6-12 volts supply. RF receivers in car will control motor. Read more
Cheap frequency meter circuit using 555 and CA3140
The electronics are still used to use a frequency generator circuit beuause It is important. And are used a lot in electronic circuits, both sine, square wave and more. In every time related to the frequency. What that we want to know is how much frequency.For laboratory common standards. We have many tools available to … Read more
Simple LED voltmeter circuit using LM3914
This is Simple LED voltmeter circuit using LM3914, can measure any volts 1.2V to 1200V on 3 range with 10 LED display easy to look and use 9V battery Read more