Simple delay speakers
This circuit is small-sized circuit at can build easy, and usable get easy between a loudspeaker with amplifier. By have relay be switch edit during opening-time switch that stereo will hear the sound “Tlub” come out from loudspeaker. Which this sound is sound the electricity will pull sharply to flow …
Hifi transistor headphone amplifier
This is Hifi transistor headphone amplifier circuit uses the principle enlarges current of the transistor at the beginning by use , 3 transistors. Which first perform be pre amp and next 2 again build model complementary which impedance of the circuit will that about 500 ohm and have amplifier rate …
Small class b audio amplifier circuit diagram
Class B audio amplifier 15W by NE5532 transistor When feed power supply reach the circuit and feed input signal come in. The sound signal change C1 and R1 for signal coupling and eradicate noise oscillator go out. From that time go to reach input pin 3 non inverting of IC1. …
Simple pre mic dynamic and Electrec condenser micro phone
This be simple pre mic circuit, that can can enlarge both of dynamic micro phone and , Electrec condenser micro phone. Then convenient for usable with small-sized stereo or the indoor. By entering into power supply circuit LED1 will light showing the work of circuit conditions. The operation of this …