[sdiy] Stompbox power (was Re: Socket schematic symbol question)

[Neil Johnson]

Hi,

Tom Wiltshire wrote:
> Neil Johnson wrote:
>> Why not use a p-channel MOSFET to switch the power, with its gate
>> pulled low by the mono-in-stereo ground ring switch?
>>
>> Cost increment is pretty small (one transistor, one resistor) and it
>> minimises the current through the jack plug.
>
> Ok, but what's the advantage? I don't get it (but it's been a long grey day...).

You don't put the battery across the input jack as it is pushed in?  I
dunno, I guess it depends on personal preference, and how cheap and
crackly you want to be.

Neil
-- 
http://www.njohnson.co.uk