Precision differential amplifier (CB20907E)

This circuit has a 60 dB gain and a bandwidth of 68 MHz. We find it in Maxim's documentation.

Gradual Touch Dimmer (CB19144E)
This circuit is based on an old Siemens integrated that can now be found very easily. It allows the...
Emitter coupler oscillator (CB7425E)
This circuit, which operates between 7 and 30 MHz, was found in Radio Electronics from the 1980s....
Triac LDR photo control (CB8327E)
Found in a 1960s RCA documentation, this circuit applies to most common triacs. The trigger device is a...