Gain control with 741 and JFET (CB25572E)

This circuit was found in the April 1993 Electronics Now magazine. With it, it is possible to control the gain of an operational circuit with a JFET.

| Clique na imagem para ampliar |

Dual indicator (CB22136E)
Obtained from an English publication, this circuit actually needs a current limiting resistor,...
Discrete Precision Regulator (CB15719E)
The voltage regulator circuit described is highly accurate and uses discrete components...
Diac Test Circuit (CB26106E)
We found this test circuit in the November 1999 issue of Electronics Now magazine. The circuit is to be...