This interesting circuit of the 50s uses a fluorescent lamp to obtain a stroboscope useful for the rotation of motors. The circuit uses a power valve to control the 10W fluorescent lamp.
This circuit changes an audio signal to get better reproduction. It is important when editing...
Found in an American documentation from 1992, this circuit for medium and short waves uses a CI of...
This circuit indicates when the voltage of a 12 V battery is low. With changes, for example, the...