This circuit, which appears elsewhere in this section, is from a 1969 Electronic Experimenter Handbook. The circuit uses components that are still common.
An interesting bandwidth filter configuration suggested by Texas Instruments in its Linear and...
This circuit was found in the 1960 Mullard transistor reference manual. The circuit can be...
Instead of BC108 we can use BC548 and instead of BC214 we can use BC558 in this low power...