[sdiy] DC wallwart +/- on-board V Reg ?

[Tom Wiltshire]

Noise is the biggest issue in my view.

With a 9V-from-external-wallwart, you have no idea what the power looks like. If you've got a regulator in between, you can be reasonably sure you're getting clean voltage of the right level. I suppose that's another benefit - provides more protection to the circuit. Most regulators have thermal shutdown and so on.

T.

On 5 Mar 2015, at 16:35, Justin Owen <juzowen at gmail.com> wrote:

> Hello,
> 
> I was hoping to get some advice on the potential advantages/disadvantages/benefits/costs of circuits that use a DC wall wart adapter (e.g. 9V boss-style adapters) to power a voltage regulator (e.g. LM317) which then powers the circuit - versus designs where the circuit is powered directly from the wall wart (e.g. guitar pedals)?
> 
> Or, perhaps to rephrase that slightly - what are the main variables involved in making a decision on what way to go?
> 
> Thanks,
> 
> - J
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy