Description

Description: This is DIY kit, which mean you will receive a pack of components, and need solder them together by yourself. The main image in this listing only for showing how the item will be after soldered! Class A power amplifier delay soft start protection board The kit used for amplifier power supply to avoid impact,install this kit in front of the transformer can delay boot Parameter: PCB plate is 2MM fiberglass board PCB is 2 oz copper foil (75UM) gold plate PCB size：70 * 100mm Screw mounting size:91 * 61mm Relay rated current is 30A The main function: Anti power amplifier suppress inrush currents when start,due to the class A amplifier and high-power amplifier transformer power is very high, ultra-low impedance load and power supply filter capacitor and large capacity, resulting in instantaneous power amplifier current is too large, easily damaged bridge rectifier and damage filter capacitor. Start delayed impact power principle: Connect power (AC220V IN), after which a short-circuit control terminal 30A relay, so that the thermistor in series is turned on,after two seconds main 30A relay is turned on, the entire (AC220V OUT) power is turned on! This package sets the delay time of 1-3 seconds. You can change the R3, the value of C3, the larger of two values the time becomes longer. Delay time can be set from 0.5-120s. 0.047UF (0.033UF) capacitance is the capacitance that anti spark blowout Control terminal switch is a switch instead of touch switch with self-locking. To protect the temperature and the switch can be re-string a thermostat switch (75-95℃) to the thermostat switch attached to the heat sink temperature protection can play a role! It is not placed on the board to play the role of temperature protection! Relay rated current is 30A relays, can withstand 2500VA or less power. Package included: 1 x AC220V Power Supply Time Delay Soft Start Protection Board (not assembly, will receive a pack of components) FAQ Can you offer multi-buy discounts? Yes, discounts will available if you buy two or more from our store; we have more stock than the quantity listed, if need mulitple items, please feel free to contact us for discount price. What kinds of warranty available for items listed above? Items in this listing comes with 30-days money back warranty and one year manufacturer repair warranty. Which carrier will responsible for delivery? How long is the the delivery time? Any tracking available? The default shipping company is speedpak or similar carrier with tracking; normally, items will arrive in about 2 to 4 weeks. Can I upgrade the shipping service to express? How much that would cost? In some rare cases, we would automatically upgrade the shipping service to express(DHL, FEDEX, UPS, EMS etc.,) without additional charges. If you need quote of the express service for your country, please contact me.