User manual HARBACH ELECTRONICS SS-100

[. . . ] SS-100 UNIVERSAL "SOFT START" INSTALLATION INSTRUCTIONS PART S SUPPLIED WITH T HIS KIT : (1) SS-100 "S oft Start" Circuit Board Assembly It is not possible to give exact installation instruc tions for the Universal "Soft Start" module because I ha ve neither the schematic nor the physical layout of your specific am plifier. [. . . ] A RED wire betwe en p ads "C" and "D" (user supplied) is connected to the neutral or return of the input power line. The m odule will be mounted using silicone a dhe sive relay side to the ch assis. W hen the power switch in turn ed ON , 240 volts is ap plied to the load through a 20 10W resistor in each side of the line. The voltage at the load is measured by the diode connected to pad "A". As the filter capacitors and other components charge or stabilize in current drain, the voltage at pad "A" rises. When this voltage reaches app roximately 90 volts, the two relays are activated, shorting out the 20 resistors. [. . . ] However, if the soft start is used with equipm ent running on less than 120 volts, the resistors probably do not need to be changed. NOTE: If only one side of the input power line is switched, be sure that the switched lead is on the "C to A" side of the soft start circuit. PARTS LIST D1 K1 & K2 R1 & R2 (240VAC) R1 & R2 (120 VAC) R3 C1 & C2 1N4005 (1A 600 PIV) SPDT 12A 48VDC 20 10W 10 10W 2400 2W 5% 100µF 63VDC HARBACH ELECTRONICS Jeff Weinberg ­ W8CQ 468 County Road 620 Polk, OH 44866-9711 (419) 945-2359 http://www. harbachelectronics. com info@harbachelectronics. com 1 [. . . ]