This configuration appears at several points in this section, obtained from different sources. This is from American documentation. The gain is 20 and the transistor can be a BC549.
We found this circuit in the November 1992 Radio Electronics magazine. It works with both...
This circuit was found in a 1969 CQ magazine. It is intended for coupling telephones to radio...
The circuit shown in the figure consists of a low voltage dropout (LDO) regulator for 200 mA using...