Re: OT: Sunon SP100A 115V fan (0.26A) in a 240V unit


 

No can do :(

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Robin
Birch
Sent: 15 January 2018 13:23
To: TekScopes@groups.io
Subject: Re: [TekScopes] OT: Sunon SP100A 115V fan (0.26A) in a 240V unit

Random thought, use the 120V mains winding on the transformer as an auto
transformer just for the fan ?

Robin

Sent from my iPhone

On 15 Jan 2018, at 13:19, David C. Partridge
<@perdrix> wrote:

Converting a 120V unit (it's OK with 50Hz) to 240V. Problem is that
the fan is a 115V unit (p/n 1123XBT).

I initially thought of a resistor in series, but I'm thinking that
would dissipate a LOT of power (470R resistor with 120V across it
would dissipate 30W).

I then considered maybe a capacitor in series but wasn't quite sure
what value I'd need - initial thoughts suggested about 6.8uF - does
that sound right and would it even work?

Other than replacing it with a DP200A-2123XBT.GN (the 220/240V
version) does anyone have any suggestions?

Thanks
Dave



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