The circuit in the figure uses two operational amplifiers: an LM101A and an LM102. Diodes admit equivalents and resistors do not have to be accurate. The power supply must be symmetrical.
In the figure we have an oscillator for microcontrollers capable of operating in the frequencies of 10,...
This circuit is from a French book from 1981. The components used are common and the indicator...
This circuit was found in a 1986 documentation and can use any operational amplifier like the 741...