Cassette Amplifier (CB21971E)

Using the CA3130, this NAB EQ preamp has excellent gain. The power supply does not have to be symmetrical.

Telephone Amplifier (CB18148E)
This simple telephone amplifier can be used as an auxiliary amplifier for additional listening, without...
TTL Optical Link (CB23670E)
This circuit can be used in fiber optic links or even direct links to microcontrollers and other...
Twilight Switch (CB11511E)
This article was obtained in a French magazine Nouvelle Electronique from 1994. It can be easily...