This signal injector and tracer (follower) was found in an old American documentation. The transistors can be general use and power is made with one or two common cells.
This circuit can be used with 3 receivers and is intended for low frequencies (medium wave range). We...
Using two of the 4 NAND gates of the integrated 4001, the circuit in the figure activates the...
This circuit allows you to superimpose the signal from the microphone to that of the music with...