Simple Linear Bipolar Power Supply

This power supply is designed for stereo power amplifiers that require a dual rail power supply up to +/- 35VDC (with the supplied capacitors). If you are looking for an excellent linear PSU that comes as full kit, is easy to build, and has the versatility to work with your first build or your hundredth, this could be the one for you. If you are uncertain if it is the choice for your particular project, seek assistance.

It is verified to work very well with all First Watt designs sold through diyAudiostore.com along with popular Classic Aleph designs. 

This power supply requires a transformer with two secondary windings providing identical AC voltage, A.K.A a dual secondary transformer (not included). Popular options have been referenced in the build guide, but if you are unsure what transformers may be appropriate for your project, seek assistance.

KIT CONTENTS

The kit contains all the parts required for a single main board boards as shown in the photo along with 2 rectifiers and 2 rectifier / snubber boards.

FEATURES

• Ideal for First Watt style amplifiers
• Designed for use with Class A and A/B amplifiers up to 2.5 Amperes per channel and up to +/- 35VDC (Recommended to not exceed +/- 30VDC)
• Dual rail decoupled - May improve channel separation and imaging with some amplifiers
• All critical parts included and a full build guide. 
• Versatile
  • Replace the pi resistors with inductors (not included) for CLC filtering.
  • Terminal blocks are provided for AC and DC connections. Boards are designed to also accept standard spade connections or be directly soldered.
  • A ground lift and soft-start are incorporated to the main PCB for ease of wiring
    
• Excellent layout to maintain short wiring for lower noise.
  
• Schematic
• Discussion Thread
• Main Board Dimensions - 170mm x 112mm +/- 0.02mm
• Rectifier / Snubber Board Dimensions - 30mm x 39mm +/- 0.02mm

Construction of this project requires working with potentially deadly mains voltage. If you do not possess the skills or knowledge necessary to safely complete this project, seek assistance and work under the supervision of a qualified electrician / technician.

Note - Photos include parts available at the time of publishing. Individual components are subject to change based on availability.