Any high-gain Darlington transistor can be used on this touch circuit. The load can be formed by LEDs and the power supply isolated from the power grid.
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,...