Using junction FETs, a configurable configuration is achieved for very low frequencies. FETs can be of almost any type and the frequency depends on the capacitors.
This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with...
Found in General Electric's documentation from 1970, this circuit is indicated for the so-called...
The improvement we found in this stage on a common basis is the use of only one power supply. The...