Sound Voice
Activated Relay Switch. This mini-VOX -
voice operated relay - is based on a
circuit published in Silicon Chip,
9/1994, p31. Photo: Touch Switch
Touch Switch #3:
This is achieved using a jugfet, it is a
very simple circuit and very effective
to with a minimum component count
working via a 1.5v cell.
Touch Activated
Alarm:. Touch Switch #1: electronic
device that enables us to ... very
effective to with a minimum component
count working via a 1.5v cell