Balanced Modulator MC1556G (CB14559E)

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

Low Pass Filter (CB5198E)
This circuit uses only passive components calculated for the desired frequency. We found it in an...
Pocket Signal Generator (CB13159E)
This unijunction relaxation oscillator can be used as a very useful signal injector. The circuit is...
Frequency divider with varicap (CB6826E)
Found in a 1965 Electronic Design, this circuit divides the frequency of a 50 MHz signal by 2. The...