[sdiy] Variable power supply

[Phil Macphail]

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> On 05 Mar 2016, at 16:07, Richie Burnett <rburnett at richieburnett.co.uk> wrote:
> 
> That Tenma power supply is fine.  Agilent E3631A's are nice with multiple outputs.  Very clean linear regulation and digital readout, but as you said a bit heavy!  If you're picking one up second hand, the rotary encoders on a lot of Agilent gear of that era have a habit of going bad too.