Found in US documentation, this circuit changes the waveform and phase of a sine signal. The circuit is indicated for frequencies between 0.1 and 10 Hz. The power source must be symmetrical.
In the figure we have a simple timer with the 555 feeding a relay directly. The circuit is from...
This is the power step of the previous circuit. Output transistors must be mounted on good heat...
We found this circuit in a publication of 1991. The audio amplifier is an operational that admits...