Re: Fw: Vectrex Yokes

you say very good results, i'm intrigued..

are you pumping this new deflection circuit with atari-type signals, or are
you using the original vectrex game board?

vectrexes are still plentiful and cheap (relative to vector monitors) and my
interest is taking a vectrex and using it as a testbench monitor..

If you really wanted to impress me, find out why the blanking speed isn't up
to the speed of atari games, i have deduced this is a limitation of the
tube, but then again, what do i know? i'm only fudging around..

I am tempted to build your new deflection circuit if indeed it increases the
slew performance but i need to find 3 minutes when i'm not busy :)

If a new deflection could be designed for the vectrex that would use the
original yoke/hv, and had a much improved performance over a hacked vectrex
deflection then i'm interested.. i have 3 vectrexes here, in various states
of disrepair and i'd dearly like to get my wooden 'vectrex in a box' back up
and running :)

Andy

----- Original Message -----
From: "Jilayne Stanclif" <jstancliff@mchsi.com>
To: <vectorlist@synthcom.com>
Sent: Wednesday, June 26, 2002 10:07 PM
Subject: VECTOR: Fw: Vectrex Yokes

Hi guys,

http://home.mchsi.com/~jstancliff/wsb/media/26501/site1060_t.jpg

    Vectex Update. Not only do I have a new replacement
yoke, but I have worked out a new deflection circuit that seems to work very
well. Check it out and someone please build and confirm results. lm1875t
needs heatsink. Bypass caps need to be as close the IC as possible to reduce
noise. I only build one so far and used it on the vertical yoke. When I get
a chance I will build another for the Horizontal yoke and see if all is
good. I used the vectrex for the horizontal and this for the vertical when
testing with very good results.

Thanks

Fred K
Juice28

HI guys,

    In my never ending quest to master the XY yoke I have made an excellent
replacement for the Vectrex (yeah I know they never go bad, but thats not
the point) also I know you guys are not the Vectrex club, but I had to tell
somebody ;)

    This is all leading up to the big brother yoke for the new color XY
arcade monitor.

    Anyway if anybody wants the skinny on how it's done let me know. I used
a wyse 150 yoke. These are still available new or surplus so this is a cheap
yoke to hack and make work for the vectrex. I gotta pat myself on the back
though.... You can't tell the difference between the picture quality of the
original and the modified wyse yoke except I have not adjust the linearity
with the little magnets yet to make the edges look perfect ;)

    So now somebody needs to make a replacement circuit for the deflection
using LM1875's or some cheap audio amp and get a sub on the tube (although I
bet the wyse tube would work fine just need to make a high voltage circuit
thats no problem)

    Anyway if you guys are not interested in this let me know and I won't
bring up vectrex stuff just arcade stuff.

Thanks,

Fred
juice28

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Received on Thu Jun 27 23:44:18 2002