[sdiy] Variable power supply

[Phil Macphail]

Sent from my iPhone

> 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. 
Yes, the encoders have a reputation for failing but they are easy to replace. Keysight sell the part for around 5 Euro, and I keep a few on-hand just in case.
Broken encoders are actually a good way to get Agilent kit cheap, as the behavior can be erratic, suggesting a more serious problem.

Phil