The LED frequency flashes depends on the value of the capacitor tested according to the table. We found this circuit in a Popular Electronics from the 80s.
Any high-gain Darlington transistor can be used on this touch circuit. The load can be formed by...
This sophisticated transmitter was found in the June 1993 issue of Electronics Now magazine. The...
Antenova Grandis antennas can be purchased from Mouser Electronics for frequencies from 868 MHz to...