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Touch Switch Circuit

Touch Switch with Active Remote Circuit using PN2907, 2N2222, 74C14

Best Audio Active high pass filter

Best Audio Active high pass filter circuit using LM741 Best Audio Active high pass filter circuit using LM741

10A Stabilized Power Supply circuit

3A, 5A, 10A Stabilized Power Supply circuit LM723, 2N3055, 3055T

DC power converter

DC power converter 12V DC to 120V DC The most obvious approach would be to make a DC power converter 12V DC to 120V DC, output at 50 or 60 Hz, but this requires a rather large and heavy transformer. So it’s better to use a high frequency, at least 25kHz, so a very small […]

18W Audio Amplifier Circuit using TDA1521

18W Audio Amplifier Circuit using TDA1521

The LM555 Timer 2 part 9

The LM555 Timer 2 part 9

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