Datasheet of This amplifier uses a pair of complementary transistors at the output and can provide 1 W of audio at a load of 3-ohm. Higher impedance speakers can be used. The circuit is from an English publication from 1986 and TR1 can be a | BC548. The supply can be done with voltages from 9 to 18 V. The trimpot adjusts the resting current, which must be in the order of 20 mA.
The figure shows how to implement an amplifier with gain 10 using the operational amplifier LM41....
This circuit is from 1997 documentation. Its purpose is to start a water pump controlling the...
This circuit is from a Popular Electronics from the 90s, consisting of a repeater relay for remote...
