Touch bistable 555 (CB9565E)

This circuit was found in a 1980s documentation. It shows how to obtain a bistable with the 555 by directly driving two indicator LEDs.

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VLF to VHF active antenna (CB6980E)
Found in a European magazine from the 1980s, this circuit can amplify signals from 10 kHz up to...
Generating an Ultra slow Sawtooth signal LM3900 (CB15631E)
The circuit in the figure uses the four current amplifiers of the LM3900 to generate a sawtooth signal...
Nautical megaphone siren (CB23685E)
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