This circuit was found in a 90’s Electronic Engineering. The integrated circuits are of the time and the diodes are of general use. The generated signal is sinusoidal.
This circuit was found in a 90s Radio Electronics. The load is an LED, but the circuit can be...
This configuration using the four transconductance operational amplifiers of an LM3900 was found...
This configuration found in GE documentation from the 90s, can also be seen elsewhere in this...