Found in American documentation from 1968, this circuit uses both diodes and a neon lamp to generate a 4-step ladder. Observe the signal voltage.
We found this circuit in a 70's RCA manual. The circuit provides 0.5 W power in the 700 MHz to 1...
Any high-gain Darlington transistor can be used on this touch circuit. The load can be formed by...
This circuit carries small batteries of Nicad that can be connected in series in number of up to...