Balanced Modulator MC1556G (CB14559E)

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

Crystal Tester (CB3881E)
This circuit has been found in an old documentation and therefore uses a lamp as an indicator. In a...
Monostable with the 4098 2 (CB11446E)
This monostable circuit uses one of the two flip-flops available on the CMOS 4098 integrated...
Inverter For Fluorescent (CB10247E)
This project came out in an article of mine (Newton C. Braga) in the Popular Electronics magazine of...