This circuit is from a Radio Electronics magazine from August 1990. The circuit uses components from the time and is suitable for measurements in alternating current.
This amplifier provides a power near to 1W. The supply must be made with a voltage of 9 V coming...
July 2017 - The new Diodes Incorporated AP7350 LDOs with ultra low quiescent current can be...
With earphones connected to the output, this circuit can monitor radio signals from AM...