Found in a 1970 EEE, this circuit generates signals that depend on the C1 capacitor. Transistors are general-purpose types.
This circuit is from a 1995 publication; The current is obtained by dividing 1.25 by R1. The...
We found this circuit in an old American publication. It is possible to test common FETs using a...
This circuit was obtained in a 90s documentation from Analog Devices. The sensitivity is in the...