This circuit was found in a 1967 Electronics World. We can design it with a BF245 for the FET and a BC558 for the bipolar transistor. The circuit has 3 scales and a 10 M ohm input resistance.
This circuit appears in this section in configurations that use other op amps. This is from 1999...
This bench circuit was found in the February 1998 issue of Electronics Now magazine. It can be...
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single-step motor...