LED VU Meter circuits using transistors, 5 to 20, 40 LED
See LED VU meter using transistor is analog circuit to show the level of power audio signal. You can build 5 LED to 20 LED display with PCB. Read more
See LED VU meter using transistor is analog circuit to show the level of power audio signal. You can build 5 LED to 20 LED display with PCB. Read more
Here is Ham radio power supply circuit using LM350T x4 in parallel for Amateur radio CB/RF/VHF. The output is 13.8V at 10A current. It is good circuit with PCB low noise RFI elimination. Read more
We started by building a small bamboo pavilion in the garden. For a break for lunch, children play and rain. I like bamboo wood. Because we don’t have to buy it. They are grown by themselves in the garden. It is easy to build. But we can use it in a short time about not … Read more
I and my daughter love to learn electronics. She is getting started interested in it. Thanks a lot for spark learning of our friends. Is it helpful for everyone, and you? Yes, we are happy. Now we test the electronic circuits in a 2×2 meter room. I partitioned the room with plywood, a small corner … Read more
SEE! TDA2030 Bridge amplifier circuit diagram with PCB layout, output of 35 watts at 8 ohms speaker. It use Dual 15V DC power supply at 2A. Read more