Steam locomotive (T315E)

This 1967 modeling circuit mimics the whistle of a locomotive. The steam-shrieking wheezing is set in a 2k2 potentiometer.

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Binary counter (CB22437E)
This TTL circuit with the 7493 makes the binary count of the pulses sent by a flip-flop with the...
Current to voltage converter (CB9606E)
This circuit has an accuracy of 1%. The components used must be precision as well. The input...
External Trigger Monostable (CB12720E)
In the figure we have a circuit that fires from a positive pulse of short duration applied to its...