Adjustable reference (CB21539E)

This circuit was obtained from an old American publication. The uA702 is a differential amplifier and the diode is a zener.

Low Noise Amplifier LM381 (CB25271E)
This circuit was obtained from the December 1990 issue of Radio Electronics magazine. The circuit...
Unity Gain Adder LM741 (CB25927E)
This circuit was found in the May 1989 issue of Radio Electronics magazine. The circuit requires a...
Very Low Frequency Generator (CB4925E)
By the components used this circuit of old English documentation can still be easily assembled. The...