Go Down

Topic: Is this an appropriate circuit to drive my 8 ohm speaker using PWM? (Read 6 times) previous topic - next topic

stimmer

You can improve the crossover distortion by trying to keep the transistors biased. Try adding a few resistors as shown to see if it improves things. You will need to experiment with the exact values, that's half the fun of building amplifiers.

s3n4te

Okay after taking your recommendations, I have adjusted the circuit to resemble this:



The diodes are to provide the dc bias to prevent crossover distortion, the pot for volume control, and 22pF cap for active low pass filter. What do you guys think?


retrolefty

Quote
What do you guys think?


Yea, dump the 1k and 4k resistors, just wire the pot's wiper to the 10k resistor.

Time to melt some solder?

retrolefty


Go Up