SD TWIN TUBE Power Supply

[Hobie]

I have to replace my power supply; I can get a 16vac 1500ma a lot cheaper than a SD replacement that is 16vac 500ma.

I am told by many that this will be fine as the pedal will only draw what it requires; but another tech tells me

I am aware of the dick smith supply however the twin tube needs to
see the correct current as well as voltage. 16V at 1500 mA when not fully
loaded would actually provide somewhere in the region of 18-20V which
would cause the device to draw more current and therefore dissipate more
power than it is designed for possibly leading to premature component failure.
?

Thanks

 

[jeremy]

Re: SD TWIN TUBE Power Supply

welcome to the forum!!

i would have thought it would be ok, but the tech brings up an interesting point. i tend to assume that any slight voltage increase wouldnt be a big deal but im no electronics expert

 

[Hobie]

Re: SD TWIN TUBE Power Supply

What I seem to be hearing as I research this is that with unregulated power supply voltage spikes or highs occur when there is no load on the power supply; but the V settles back to the specified level once a load is placed; eg a 9vdc 1500ma I have reads about 12v unloaded, but turning on a pedal (Barber tone press in this case) saw the v settle back to 9v.

A couple of other techs I discussed this with made the same observation that the v would settle down to the specified level.