Toss (CB20959E)

This game was found in an old Popular Electronics. The unijunction transistor can be 2N2646. The supply can be done with voltages from 6 to 12 V.

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Monostable 7555 I (CB18970E)
In the figure we have the way to trigger a 7555 CMOS monostable with a positive pulse. The time...
Asymmetrical Astable (CB6463E)
This circuit is from a 1968 documentation. It generates a non-symmetrical signal with the waveform...
LM311 Oscillator (CB5131E)
This circuit is from the manual of the used operational amplifier itself. The same setting can be...