This circuit can be powered by voltages from 3 to 9 V providing output power from 100 mW to 1 W. The pass-through range is 20 kHz and the consumption with 3 V is 80 mA rising to 270 mA with 9 V.

This circuit can be powered by voltages from 3 to 9 V providing output power from 100 mW to 1 W. The pass-through range is 20 kHz and the consumption with 3 V is 80 mA rising to 270 mA with 9 V.