[sdiy] Hammond Transformer Question

[Romeo Fahl]

Thanks to all for the speedy replies! Series connection and pins 8 &
11 for center tap it is.

Romeo

On Wed, Dec 3, 2008 at 9:00 AM, Paul Schreiber <synth1 at airmail.net> wrote:
> a) for secondary: connect pins 8 to 11 and that connection is 'center tap'
>
> b) the dual primaries are for 120/240VAC inputs. You will have to look on
> the transformer datasheet to see how to connect that.
>
> Paul S.
>
> ----- Original Message ----- From: "Romeo Fahl" <romeo.fahl at gmail.com>
> To: "Synth-DIY" <synth-diy at dropmix.xs4all.nl>
> Sent: Wednesday, December 03, 2008 10:36 AM
> Subject: [sdiy] Hammond Transformer Question
>
>
>> Hi,
>>
>> I talked a friend into buying a Hammond transformer, without having
>> tried on myself. I've got the datasheet, which you'll find here:
>> http://www.hammondmfg.com/pdf/185Insert.pdf but I'm not clear on how
>> to wire up the output.
>> What I need is for it to take 120 VAC in and output 36 VAC with a
>> Center Tap, so it can then be connected to a +/-15 V power supply
>> board. The input part is easy, since that's clearly depicted in the
>> datasheet. What I'm not sure about is how to wire up the output pins
>> to get the desired Center Tap. Do I use the series or parallel
>> diagram? Which pin is used for the center tap? Possibly worth noting
>> is that each side of the xformer has a fifth middle pin that's not
>> listed in the diagram. Perhaps this is the CT pin? Any help is
>> appreciated!
>>
>> Romeo
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>
>