Audio Amplifier 1W

audio amplifier 1w

This amplifier can provide approximately 1 W, with a supply of 9 V. The transistor Q2 should be mounted on a heatsink, and R2 must be chosen in order to obtain a minimum current with the highest gain. For the common case, R2 will be between 22 ohms and 100 ohms. The gain of this circuit is relatively low.