Broadband Amplifier (CB21859E)

This circuit has a voltage gain of 30 times and passband of 14 MHz. The circuit is from the 1974 Ferranti transistor manual.

Simple timer (CB23641E)
For times in the range of seconds to a few minutes we found this timer with the CK722 in a Radio...
Negative Current Regulator 7905 (CB15340E)
We found this circuit on Motorola Linear Interface ICs from 193. Other circuits in the series can...
Audio Micro Oscillator (CB21921E)
This oscillator was found in a Raytheon documentation from the 60's. The phone must be high...