Re: Fw: Vectrex Yokes

OKay,

    I built another for the horizontal and everything looks very good. Very, very slight distortion of the rock things on Mine storm, but this is probably because I built this on a noisy soldierless breadboard with long wires running to the yoke. Everything else looks perfect. Another thing to add is 2 potentiometers for left,right, up and down adjustment. Athough it looks good now this would be easy with a voltage divider going between the cap and 1k resistor on pin 2.

Fred
Juice28
  
  ----- Original Message -----
  From: Jilayne Stanclif
  To: vectorlist@synthcom.com
  Sent: Wednesday, June 26, 2002 4:07 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 Wed Jun 26 15:35:11 2002