We found this touch control on a Popular Electronics from 1970. The circuit makes use of an integrated of the time. It can be adapted to use modern equivalent components.
This circuit was found in a 90s American documentation from the 90s. The components are from that...
The AT21CS11 memory device offers an extended voltage range to accommodate lithium-ion battery...
The previous oscillators that use gatesshown in this section, and the 4093 in the basic version,...