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.
Found in a Raytheon circuit manual from the 1960s, this circuit uses the CK722 and a...
This 1.6 GHz oscillator with 40 mW of output power was found in a Popular Electronics from...
This low-frequency circuit for alternating signals is from an early American 1980s documentation. The...