This circuit was found in an American publication from 1968. The transistors are from the time, but it can be made from modern transistors.
The LMV321 is a low voltage operational amplifier from ON Semiconductor. The following diagram,...
This circuit was found in Motorola documentation from 1968. The transistors are from the company,...
A simple VCO using two inverters in a ring configuration is shown here. A VCO is a circuit in...