6SN7 Preamplifier (T1105E)

This preamp circuit has a typical configuration as found in a 1946 publication. Supply voltages are indicated.

Programmed amplifier (CB7129E)
This digitally programmed gain amplifier was obtained from Signetics documentation from the 1980s....
10 to 150 kHz Crystal Oscillator (CB6183E)
This circuit is from a 60's documentation. The capacitance C1 can be between 20 pF and 0.01 uF...
Colpitts Oscillator (CB6185E)
This circuit was obtained from an American 1980s documentation. The frequency depends on the...