Use the transformer within 1000W.When the power is just turned on, four 5W12 ohm high-power resistors on the board and the transformer of the power amplifier are connected in series to limit the current and reduce the voltage. After a few seconds, the line relay is connected to the 220V mains (the LED on the board is on), which can significantly reduce the 220V.The impact of voltage on high-power transformers, large-capacity electrolysis, and rectifier diodes (high-power transformers of hundreds of watts or more than kilowatts have low primary resistance, and some are only ten ohms. The current is large at the moment of power-on and the impact is large.The effect will be dark flashing).Its soft-start feature is also suitable for tube amplifiers, so that the filament voltage of the tube has a slow boost process, which can reduce the voltage impact on the filament.

 

Imported component assembly, high-quality relay.Replacing the delay RC components on the board can change the relay conduction time.

 

Affirmation: The types, brands, models, specifications and parameters of some components are slightly different due to the different assembly batches of the components on the finished board.Subject to the components and parameters assembled on the board received!

 

Circuit delay time is determined by the size R8 and C5. R4, R5, R6, R7 resistor in series power should be the same as load power, better effect, can greatly reduce the impact of high current transformer caused a power—up.

 

 

Package Included:
1 x Amplifier power delay soft start protection board Assembled