This item is a spare part and needs to be welded by itself. It requires a strong professional welding technique.

   there is no instruction manual, if you cannot successfully solder, please do not buy

   If you buy it, you can be sure that the item will work. Thank you

Please also carefully weld carefully, the polarity of the components must not be reversed, especially the large electrolysis!

Power up as far as possible from the motherboard! Prevent the electric blasting incident caused by various welding errors! ! !

Kits need to bring their own parts: 150W-200W transformer (available power amplifier disassemble) voltage and current meter.

Install 2 TIP3055 heat sinks, 12V cooling fan, chassis and red and black binding posts.

Suitable for retrofitting old power supplies, using its chassis, transformers, meters and other accessories.

Simple circuit description:

L1 is an auxiliary transformer, and a dual 14V--18V transformer with center tap can be used. This transformer can be independent, but needs to be controlled with the same switch as L2.

L2 is the main transformer and requires more power. When the output is 30V, the suitable tap voltage is 0V-15V-23V-31V. If the output is 35V, the main output is 0-15-25-35V.

The main transformer can also be used with a commonly used two-group center tap 14V--18V transformer. At this time, the relay RL2 may not be installed.

Circuit diagram: If you need high-definition pictures, please contact customer service to send PDF files.

Note: It is best to use 25V2200*2 for the auxiliary power supply part with double 15V electrolysis.

Circulating resistor 7.5K for 2.2K 2W *2 for main filter 50v2200uF*3

Power DIY has high requirements for electronic comprehensive ability, non-professionals, please do not buy!!!!!!!!

Please also carefully weld carefully, the polarity of the components must not be reversed, especially the large electrolysis!

Power up as far as possible from the motherboard! Prevent the electric blasting incident caused by various welding errors! ! !

Kits need to bring their own parts: 150W-200W transformer (available power amplifier disassemble) voltage and current meter.

The main purpose is to Install 2 TIP3055 heat sinks, 12V cooling fan, chassis and red and black binding posts.

Suitable for retrofitting old power supplies, using its chassis, transformers, meters and other accessories.

Simple circuit description:

The transformer can be independent, but needs to be controlled with the same switch as L2.

L2 is the main transformer and requires more power. When the output is 30V, the suitable tap voltage is 0V-15V-23V-31V. If the output is 35V, the main output is 0-15-25-35V.

The main transformer can also be used with a commonly used two-group center tap 14V--18V transformer. At this time, the relay RL2 may not be installed.

Circuit diagram: If you need high-definition pictures, please contact customer service to send PDF files.

Note: It is best to use 25V2200*2 for the auxiliary power supply part with double 15V electrolysis.

 Discharge current (Circulating) resistor 7.5K for 2.2K 2W *2 for main filter 50v2200uF*3

The package include:

 1 X  0-35V 0-5A New Continuously Adjustable DC-DC Regulated Power Supply DIY Kit