Blown Fuse Alarm (CB6109E)

We found this circuit in a 1967 Electronic design. However, it can be easily implemented even today as it uses only common diodes.

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Surfer Sound (CB21239E)
Published in Electronics Now from the 90s, this circuit called Surf Man produces a sound effect in the...
Sinusoidal converter (CB8428E)
With this circuit it is possible to obtain a sinusoidal signal from a triangular signal. The...
BCD to Analog Converter (CB5091E)
This circuit can function as a simple shield converter from BCD to analog outputs. The circuit...