Re: Weird distorted shapes

Some AC on your DC rails should not matter for the output amp anyway.

On 4-3-2014 00:25, Joel Griffin Dodd wrote:way
> OK I can try moving things around a little tonight and see what effect
> that has.
>
>
> On Mon, Mar 3, 2014 at 3:21 PM, teeray <teeray@earthlink.net
> <mailto:teeray@earthlink.net>> wrote:
>
> use ascope to check the amp power supplies for AC ripple
> and make sure all of the high voltage wires are as far away from
> the board
> as possible. Also make sure the X and Y input wires are away from
> any high voltage.
>
>
>
>
> -----Original Message-----
> From: Joel Griffin Dodd
> Sent: Mar 3, 2014 6:13 PM
> To: vectorlist@vectorlist.org <mailto:vectorlist@vectorlist.org>
> Subject: Re: VECTOR: Weird distorted shapes
>
> How would I check for that Tim?
>
>
> On Mon, Mar 3, 2014 at 3:11 PM, teeray <teeray@earthlink.net
> <mailto:teeray@earthlink.net>> wrote:
>
> Looks like you have some AC voltage getting into the X and
> Y amps.
>
> Tim
>
>
> -----Original Message-----
> From: Joel Griffin Dodd
> Sent: Mar 3, 2014 2:19 PM
> To: vectorlist@vectorlist.org
> <mailto:vectorlist@vectorlist.org>
> Subject: VECTOR: Weird distorted shapes
>
> Hi all,
>
> Doug and I have been working on building a
> reproduction 25" Amplifone using a new deflection
> board design from an Australian designer (Dez).
> Overall it's working extremely well, but we are seeing
> some odd distortion in shapes. It's most apparent in
> circles, but can been seen in most shapes on the
> screen where letters look a little warped and joins
> between vectors overlap.
>
> I know even 6100 deflection boards do have a little of
> this, but it seems to be more apparent on our board.
>
> Here's an extreme example of the death star on the
> star wars start game menu...
>
> https://www.dropbox.com/s/i1r76l4dif9vv2w/2014-03-02%2020.10.19.jpg
>
> Doug mentioned that he thought it may be down to the
> tolerances of some of the new components we are using
> on the deflection board. I wanted to throw it out to
> the group to see if anyone has any ideas of where we
> might look in the circuit to investigate this odd issue.
>
> Joel
>
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Received on Mon Mar 3 18:27:13 2014