Adjustable reference (CB21539E)

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

Gain 70 000 Amplifier (CB6638E)
This circuit that has a response from 10 Hz to 700 kHz was found in Philips documentation from 1968. Dual...
Tachymeter (CB19862E)
This circuit is from old documentation, using a component that cannot be found easily today. The...
Differential Multiplexer (CB5352E)
This circuit was found in an ancient American documentation. The integrated circuit is of the time...