This circuit for frequencies up to a few tens of megahertz was found in the April 1978 issue of Radio Electronics magazine. The power supply must be symmetrical.
We found this configuration in a documentation for radio amateurs from 1974. The circuit can be...
Texas Instruments' low power operational amplifiers OPAx196 can be found on Mouser Electronics....
This low power amplifier circuit for speaker or phone is from the Philips Databook of 1990. The...