High Current 12V-13.8V at 30A,25A,20A,15A Power Supply
CAR Radio transmitters to use in home, need a ham radio power supply DC-12V or high current 13.8V power supply with enough power out of 5A - 30A. [...]
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September 16, 2020
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.
November 23, 2020
Ham radio power supply circuit with RFI elimination
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.
November 16, 2020
Build a simple bamboo pavilion
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…
November 12, 2020
Make Dreams Learning Center
I am interested in alternative education. It is a good education. And can learn throughout life. I educate my children with a homeschooling system. It's a very good education. We…
November 12, 2020
TDA2030 Bridge amplifier circuit
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.
November 8, 2020
100 watts OTL amplifier circuit using transistor MJ15003-MJ15004
If you are looking for Small PA amplifier circuit using transistors. This may be first choice for you. The output is 100 watts power, very loud and very durable, easy to builds. Is is real?
October 29, 2020
STK4231II 2 channel 100w stereo audio amplifier circuit
See STK4231II and build a 2 channel OCL 100W stereo audio amplifier circuit with PCB layout. It's easy, small without adjusting, and cheap.
October 25, 2020