Based on the BA1404 integrated circuit, this circuit was found in the July 1992 issue of Radio Electronics magazine. The circuit is short range, but a power amplifier stage can be used.
This three-transistor amplifier uses a JFET at the input to increase the input impedance. The...
We found this circuit in a 2005 Linear Technology application manual. The circuit makes use of a...
Using a general-purpose transistor this AC amplifier was found in the November 1993 issue of...