Balanced Modulator MC1556G (CB14559E)

We found this circuit in Motorola's Linear Databook in 1990. The semiconductor component used is no longer common today.

Square Wave Generator (CB12810E)
This circuit was obtained in an old Argentine publication, using germanium transistors and...
Milliohmmeter (CB25813E)
This very low resistance meter was found in the February 1995 issue of Electronics Now magazine. The...
White noise generator (CB22010E)
Using a CA3130 operational amplifier, this circuit was found in an English publication from 1977....