Audio Opamp
audio power amplifier (output stage) class AB design?
i have been assigned to design an AB class audio power (for the final project of a basic course in electronics)amplifier using Opamp : 741 , power transistors BD137,138 , a 12 v. supply , load resistance 8 ohm , voltage gain of 40 dB and cut-off frequency 20 Hz. desperately needing help ! where shall i begin?!
http://www.uoguelph.ca/~antoon/gadgets/741/741.html
This shows a low power amp just using the 741
The ohmage is way off
You'd have to give this some thought because the power transisters will be fed by the op amp and drive the 8 Ohm speaker load.
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