AIYIMA 2000W Power Supply Soft Starting Board High Power For 1969 Amplifier Speaker DIY 100A Relay Thunder Protection 110V 220V

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Note:This Soft board only can work with amplifier board and transformer,it can't work with motor.


High Power soft start circuit board
[Relay] RGL high power super large current 100A pure copper foot relay
[size] 93mmX56mmX29mm (height), ultra small size
[Scope of application] Suitable for high Class Audio power input, or other large starting current machine applications. The power used is suitable within 3800W. Long-term load working power is recommended at around 2000W
[Power supply voltage adaptation range]: AC 200V to 275V.


The soft starter function is to reduce the inrush current at the moment of startup to reduce the impact of the machine on the grid and extend the life of the switch. This board uses ultra-high current (100A) pure copper foot relay and 4 large thermistor NTC 20D-20, which effectively protects the machine and prevents excessive starting current.

This board does not require an auxiliary power supply. It has only 2 terminals, one is connected to the power input (before a switch control), and one output is connected to the load, which is very convenient to use.

Working principle:

At the initial stage of power-on, the load is supplied through a thermistor with a negative temperature coefficient. As the temperature of the thermistor rises, the resistance decreases and the voltage rises slowly, thereby effectively suppressing the impact of the surge current on the line and other electrical appliances. Impact. After about 2 seconds, the relay pulls in (adjustable pull-in time, see the picture for details), short-circuit the thermistor, the power supply will directly supply power to the load through the relay contact, and the load enters the normal working state.

Packaging Including:

1 x PC power amplifier(110V or 220V)

220V Soft Starting Board

110V Soft Starting Board

Maximum Power Per Channel:
 Above 200W
Brand Name:
Model Number:
 Power board
 Home Amplifier


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