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.

Pulsating indicator (CB23608E)
This circuit excites an LED, which will flash at a frequency adjusted by the trimpot. The other...
1 Hz Sinusoidal Oscillator (CB13233E)
This circuit, found in a publication from the 1970s, produces a 1 Hz sinusoidal signal....
High Output Voltage Regulator 78xx (CB15164E)
In this circuit, the output voltage is Vxx plus the zener voltage. The circuit is from the SGS...