231 Dual amplifier circuit diagram

Published:2011/7/28 3:27:00 Author:Ecco | Keyword: Dual amplifier | From:SeekIC

R4 is a low frequency upgrading adjustable resistor replaced by the 12K fixed resistor, and then, it will gradually increase under 100Hz, reach 5-6dB (2 times) under 50Hz, no upgrade above 100Hz. R12 is the If adjustable resistor and replaced by 30K fixed resistors, it makes 2.5-4.5KHz frequency increase, and the band upgrade approximately 6 dB (2 times). If you feel harsh, it needs to add RC, double T decreases. For a fixed resistor, in addition to enhance the band, the circuit overall voltage amplification factor is 3 times, it is enough to push down the headset.J1, J2 are the linkage switch, you can choose generic options or DT231-specific amp. Due toit upgrade little, Q value is not high, the relative frequency change is not great. Due to circuit change little, Q value is not high, the relative frequency change is not great.



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