Windshield wiper tiner (CB9523E)

Found in old documentation, this circuit can be implemented even today with the use of a 2N2646 for the unijunction and a TIC106 for the SCR.

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Light Triggered Motor (CB15455E)
A flash of light directed at the LDR causes the SCR to fire and the motor to be activated in the...
Low frequency sine wave generator (CB24453E)
This circuit is based on operational ones found in documentation from the 90s. The frequency with...
Rectangular Generator (CB13240E)
The operational amplifier used in this circuit from a 1970s publication is no longer easily found...