This circuit was obtained from a 1977 FET manual. The circuit measures inductances using a signal generator as a reference. The range is from 60 uH to 60 000 H. The FET can be a BF245.
This current source circuit with the CA3130 was found in a 1977 publication. The circuit provides...
This circuit was obtained in a technical publication from the 1970s. It fires a diac and thus a...
To small metal plates are used as sensor in this circuit. The skin resistance is enough to trigger the...