This circuit is an automatic reverse polarity switch. If we apply DC voltage to a any electronic circuits in wrong polarity. It can be caused by too much current. You must waste time to reverse the new terminal. If your circuit is importance, let’s build this project to your life will better. How it works […]
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This diode checker circuit can check the diode the good or bad and also can indicate its polarity. How it works In Figure 1, There are IC1, R1, R2, R3, C1 include as the oscillator circuit that generate the square wave out to pin 6. This signal will be an AC that is symmetrical waveform. […]
This is a low noise tape head preamplifier that good sound quality. Because use LM387N that is the low noise ICs and is designed for the specific preamplifier. Figure 1 is Circuit diagram of this project. Maximum the output at 1 volts which is is high enough to drive easily the high power amplifier. The […]
If you are beginners who want to use the simple variable DC power supply 0-30V 2A. This circuit is best for you. Because it has a few parts,small,and cheapest than others circuit that same power. The features of this handset is the DC voltage continuously from 0-30 volts and apply current up to 2 amperes […]