3-IC AD converter (CB9028E)

Found in American documentation from the 70s, this circuit uses components of the time, uncommon today.

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CCFL Lamp 2.2 W Inverter (CB12536E)
The circuit shown in figure 1 consists of an Inverter Module for CCFL Lamp that can be supplied with...
Delayed Reed Relay (CB12185E)
A delay of a few seconds to a few tens of seconds can be achieved with this circuit found in a...
Headphone wireless Transmitter (CB7817E)
Found in 90s Popular Electronics, this circuit produces a modulated infrared beam for a remote...