The figure shows the equivalent circuit for the LM381 audio preamplifier IC. The circuit was found in the February 1990 issue of Radio Electronics magazine.
This 3-transistor amplifier stage was found in documentation from 1963. The transistors are made...
This circuit is from a 2004 documentation, and can also be used to signal garages with the use of a...
This circuit was found in General Electric documentation from 1965. The transistors are from that...