500 mW amplifier using the 741 (CB6991E)

This circuit was found in 80's Popular Electronics. Transistors are commonly used. The potentiometer R5 adjusts the gain.

| Clique na imagem para ampliar |

Dip Meter with Germanium Transistor (CB5174E)
This circuit was found in an American 80's documentation. The transistor is of germanium of the...
VHF TV Signal Generator (CB511)
This circuit produces a signal in the range corresponding the the VHH channels between 2 and 6....
Gain 10 Amplifier (CB25636E)
Using a general-purpose transistor this AC amplifier was found in the November 1993 issue of...