Sensitive Crowbar (CB5887E)

This circuit is from an 80's documentation, firing when the input voltage exceeds 5 V. The SCR can be the TIC106 need not have a heatsink.

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CMOS Mixer (CB922E)
This digital mixer uses CMOS integrated circuits. The circuit was published by us in a magazine...
Phase Sequence Detector (CB13264E)
This simple circuit with a neon lamp is from a documentation from the 70s. It indicates whether...
Constant current source LM3900 (CB25176E)
This fixed current source uses a Norton LM3900 amplifier. The maximum current depends on the...