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Subject: Re: Voltage Doubler???

Date: 02/07/02 at 5:34 AM
Posted by: David Ashby
E-mail: dashby@quin.co.uk
Message Posted:

In Reply to: Voltage Doubler??? posted by Blair on 02/06/02 at 10:55 PM:

Hi Blair,

The answer to all of your questions is 'yes'.

Not having any experience with professional audio equipment I don't know what is meant by 'phantom power' - perhaps someone else can explain this.

The reason why you were advised to use an external linear +/-15V supply is to minimize the possibility of noise getting into your microphone pre-amp. Linear supplies generate much less noise than switchmode supplies. However, a voltage doubler or tripler will need to use some form of switching technique, which can introduce noise on the 15V supply used to run it as well as creating a noisy 48V. Perhaps the easiest way out technically is to use completely seperate supplies for +/-15V and the 48V supply - both linear.

David Ashby


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