This circuit was found in an American magazine 73 for radio amateurs of the 80s. It is an automatic transmission circuit for telegraphy. The circuit is TTL.
We found this interesting effect circuit for LEDs in a 1993 publication. The circuit uses very...
The sensors can be screens having porous tissue between them. When the water moistens them, the...
This circuit is indicated to operate from high impedance sources as piezoelectric transducers....