Low voltage dimmer (CB7855E)

This circuit was found in a 90s 303 Circuits. The circuit operates in a 200 Hz switching mode and the output current reaches 5 A.

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Clock with comparator (CB9592E)
Found in old American documentation, this circuit can be implemented with modern operational...
Relay Control shield or interface (CB15483E)
To control relays safely with double insulation, we suggest the circuit in the figure. The optical...
Audio Frequency Meter (CB4867E)
This circuit was obtained in an old documentation, making use of an operational amplifier of the...