Saturday, October 3, 2009
This is an audio amplifier circuit which use IC TDA 7052 .There are only 5 external components. C1 is the input coupling capacitor, which blocks any DC that might be present on the input. C2 and C3 provide power supply decoupling, and R2 provides adjustable input level. This can be used as a volume control. The ideal supply voltage of this circuit is about 6-12V and no heatsink required.
List Components :
* C1 : 2.2uF electrolytic capacitor
* C2 : 100nF ceramic
* C3 : 100uF electrolytic
* R1 : 1K ohm resistor
* R2 : 10K ohm potentiometer
* Spindle for potentiometer
* TDA7052 Integrated Circuit
Specifications IC TDA7052 :
D.C. input : 3 – 15 V at <> 1 Watt @ 8 ohms maximum.
> 0.25 Watt RMS continuous
Freq. Resp. > 20 Hz – 20 kHz
~ 10 – 50 kHz, – 3dB
THD <> 70 dBA
Gain ~ 30 dB maximum.
Input Z ~ 10 k ohm.
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