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| Created | August 26, 2012 |
| Last modified | October 26, 2013 |
| Tags | No tags. |
Driver for small speaker or headphones.
30 db gain from 100 Hz to 500 KHz.
With the internal feedback this works much as a current-boosted class-A amplifier. All the voltage gain is in Q3, with Q1 and Q2 providing current boost for that amplification.
Adjust R3 for VM1=((V1) / (2)) if you change the supply voltage. This keeps the output symmetrical.
Not provided.
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