Found in a 90’s Radio Electronics magazine, this circuit uses a component from the time, difficult to obtain today.
This low power circuit can be powered with voltages from 1.8 V. We find it in a 80s Hands On...
The voltage-gain for this amplifier is 10. Other operational amplifiers can be use and the Power...
Found in an American publication, this circuit applies to almost any operational amplifier. The power...