LED Chaser circuit using 4017 and 555
If you want to build a 10 LED Chaser circuit we suggest this circuit first. It uses popular IC is a simple and affordable IC-4017_decade counter and IC 555 […] Read more
4 Automatic Solar Light circuit
This is simplest automatic solar led light circuit that my son try to make it for basic small solar charger. to use 2 x AA NI-MH battery total 2.4V Read more
Universal Preamplifiers using – NE5532 – LM382 – 741
You have a good power amplifier and speaker. You are listening to music. But the sound is very light. The problem has many reasons. One reason for the problem is the input signal is too low. You may need a preamplifier using IC. It will make the input signal is higher. Then, You will listen … Read more
7 Radio Frequency circuit diagrams
There are many radio Frequency circuit diagram that I collect them. They may be useful for you. The ideas are important for the learning circuit. I am sorry that cannot confirm it works and does not know the source. If you do not like it please tell me. Simple field strength meter This circuit is … Read more
1A Voltage Regulator Circuit using 78xx series
First choice of Fixed Regulator using family IC-78xx. It is easy to use, cheap, popular for a long time. Read more