Beacon with PUTs (CB9788E)

This circuit was found in old documentation, appearing in several ways in this section. PUTs are not currently common components.

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Telephone dialer (CB21268E)
This circuit was found in Electronics Now. With it the dialing signals of a telephone are...
Noise Generator with the 741 (CB12176E)
This traditional configuration of a white noise generator that uses the junction of a transistor with a...
1 Hz clock (CB17060E)
This circuit generates an accurate 1 Hz signal controlled by a crystal. The circuit is from 1995...