Low Frequency Doubler MC1556G (CB14564E)

This circuit is from Motorola's 1990 Linear Databook. The circuit employs a component that is no longer common today.

Amplifier DC 2 (CB21903E)
This amplifier with two transistors for analog instruments was found in a Raytheon publication from the...
VFO With Ceramic Resonator (CB12454E)
Using a ceramic resonator, it is possible to vary the frequency between 4.9 MHz and 5 MHz. The...
Rejector Filter 741 (CB5195E)
This operational filter configuration was obtained in a 1980s publication. The calculation is made by the...