This was the original title given by the publication of the 80s in which we found it. Similar versions can be found on the website under the name of rhythmic light.
The current of this source is 200 mA at the most, and the output depends on the zener that may...
Found in a 1970 documentation, this SCR bistable can be implemented with modern equivalent SCRs. Observe...
This circuit produces sounds that depend on the measured voltage and that can be compared with a...