Dimmer without flicker (CB7218E)

This circuit was found in Signalite documentation from the 1960s. The circuit uses a pulse transformer whose characteristics have not been provided.

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Voltage Follower with JFET and 500 M ohm Input (CB25565E)
This circuit was found in the March 1993 issue of Electronics Now magazine. The circuit is a...
CMOS Crystal Oscillator (CB5113E)
This circuit appears in other articles in this section and even in other sections of the site....
Piezoelectric Alarm (CB4879E)
When the base of the general purpose transistor is grounded the circuit produces a signal that is given...