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.

Laser source diode (CB7840E)
This circuit for battery powered laser diodes was found in a 1992 RE Experimenters Handbook. The...
AC Amplifier with 5 V Supply MC33171 (CB15269E)
This circuit can also use other series operational amplifiers such as MC33172, MC33174, MC35171,...
AC Millivoltmeter (CB4514E)
This alternating voltage voltmeter was found in a 1967 magazine. The magazine no longer exists, but...