Medium impedance stage (CB20563E)

We found this circuit in an English publication from 1963. The circuit uses germanium transistors of the time.

OR Function with the LM3900 (CB4507E)
Other series amplifiers such as the MC3301, MC3401 and LM2900 can be used on this circuit. We...
Microwave Field Strength Meter (CB5187E)
The sensor diode used in this circuit is the common type of germanium. Experiments may be made...
Beep For Flasher (CB4340E)
This circuit adds a beep to turn on with car flashers that do not have this feature. A 47 ohm to...