doepfer case on australian mains...

[noobman]

i hate to just spam this forum with questions, but seems to be alot of info here... hope i can answer a question some day

anyway,i kinda decided on the doepfer low cost case... only thing is, i found out the voltage here is 240v and the comes with 230v

so does anyone know a solution to this? maybe a case thats 240v, or a way i could make it work here... any help would be very very appreciated

[Adam-V]

Running a 230V or even a 220V supply on 240V won't cause you any grief.

Cheers,
Adam-V

[noobman]

ah so its just kinda an approximation? great, thanks alot for your help adam

[Adam-V]

More a question of tolerance in the design than an approximation as even though mains voltage is specified 240V for example, it is a nominal figure in actuality does fluctuate around that figure.

Here's a simplified version of how the power supply works:
Inside the power supply is a step-down transformer that will convert 230VAC mains to say 18VAC. This is then "rectified" into DC and then "regulated" to say 12V or 15V etc. Applying 240V instead of 230V (roughly a 5% increase) more voltage on the mains will only increase the output of the transformer by about a volt to 19V using the above example. This small difference won't do any damage to the subsequent rectification and regulation circuitry which in turn won't harm your modules.

Now, if you were to apply 240V to a 120V supply, that would be a problem.

Cheers,
Adam-V

[noobman]

ah! wonderful explanation, thanks very much for your help