Muffsy Hifi Dual Power Supply - PCB

Name: Muffsy Hifi Dual Power Supply - PCB
SKU: 4630
Price: 12.00 USD
Availability: Discontinued

Regulated +/-15 volts dual power supply for hifi equipment, using a single AC wallwart adapter

Designed by muffsy in Sweden

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Regulated +/-15 volts dual power supply for hifi equipment, using a single AC wallwart adapter

This product is retired: Sold out A newer version is available here: https://www.tindie.com/products/skrodahl/muffsy-hifi-dual-power-supply-pcb/ Description This a dual power supply for hifi equipmen…

Sold out

A newer version is available here: https://www.tindie.com/products/skrodahl/muffsy-hifi-dual-power-supply-pcb/

Description

This a dual power supply for hifi equipment, such as the Muffsy Phono Preamp PP-2 or other high quality preamps. The PSU provides 80-100 mA of power without using heatsinks, and more than double that with heatsinks mounted.

The board measures only 76x46 mm.

This LM317/337 regulated power supply only has 0.1 mV ripple, well below the Power Supply Rejection Rate (PSRR) of any operational amplifier. It is also very well suited for discrete circuits.

The power supply only requires a single AC input, from a 15-18 volts AC wall adapter or transformer.

Suitable AC to AC wall transformers

120V Input:

230V Input:

What is it not?

It is not a complete product, only the printed circuit board. In order to build it, you need to buy components separately.

The bill of materials is available on the hackaday.io project pages.

Why did you make it?

I made it as a companion to the Muffsy Phono Preamp. There is nothing stopping you from using it for other purposes though.

The Muffsy Phono Preamp PP-2 and this power supply will fit in a 0905 enclosure, as shown in the picture gallery.

What makes it special?

This power supply has two great advantages:

It has very low ripple
It doesn't require fiddling around with mains power

This PSU uses a single AC wallwart so you don't have to risk electrocuting yourself or burning down the house in order to properly power your hifi equipment.

The ripple is a very measly 0.1 mV, good enough for any hifi application.