Broadband Balanced Mixer MC1556G (CB14563E)

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

Simple Telephone Spy (CB18076E)
We describe a simple wiretapping system that does not require any connection to the line. To...
Short wave receiver IF filter (CB20932E)
Found in American documentation from the 1980s, this circuit has a throughput of 700 Hz and a flat...
Sampling and hold (CB8416E)
This circuit for demonstrating a sampling and holding configuration was found in a Popular...