Alarm (CB6115E)

This circuit is from an old documentation. However, it can be mounted with modern equivalent transistors.

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Fast Logarithmic Converter (CB5104E)
This circuit was obtained from an American 80's documentation. It can be implemented with modern...
Monostable with the 4013 (CB4637E)
We give in the figure a different application of 4013, which can also be used as monostable. In common...
Adapter for transistor test using a multimeter (CB3925E)
We found this adapter in a 1970s American documentation on instrumentation. It is suitable for analog...