Simple delay speakers
Amplifiers
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 enter still a loudspeaker and may will make a loudspeaker can are damaged therefore then necessary to must have time drag while open switch for a moment. For speak this part disappear before then build enter still a loudspeaker. When receive power supply come in, The C1 will charge thereafter …
Hifi transistor headphone amplifier
Amplifiers
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 5 equal it give output power about 50 mW. When entering power supply 9 volt, reach the circuit and feed input signal come in change C1 coupling signal go to reach bass pin (B) of Q1. By Q1 will enlarge a signal gives the power goes up in the one …
Small class b audio amplifier circuit diagram
Amplifiers
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. Which be op-amp IC boost up signal give the power goes up in order to go to drive give Q1 and Q2 work. Which IC1 will have expansion rate at 15 times can calculate from (R3/R2)+1. From that time signal that enlarge already go out pin 1 of IC1 go …
Simple pre mic dynamic and Electrec condenser micro phone
Amplifiers
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 circuit has mic input 2 parts Electrec condenser micro phone and dynamic micro phone that it was Mike’s party that does not require power. When it come it passed to the C3 functions coupling capacitor signal filtering out only the signal to enter the B pin of Q1 amplifier to …