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 very low frequency amplifier has a gain of 1,000 and was found in a 1967 documentation. The circuit is...
April 2017 - Mouser Electronics has the bq25890H integrated circuit consisting of a single 5 A...
This circuit was obtained in an old US 1974 documentation when Nixie tube displays were common. The...