We found this circuit that protects speakers against current surges that occur when the amplifier is turned on in a Radio Electronics from August 1991.
This control is intended for 110 VAC or 220 VAC Motors. Any TIC series triac can be used according the power...
This circuit was found in the August 1993 Electronics Now magazine. It is for telephones used on...
The width of the pulses produced by the oscillator in the figure is determined by the value of R1,...