Discussion
Loading...

Post

Log in
  • About
  • Code of conduct
  • Privacy
  • Users
  • Instances
  • About Bonfire
Graham Sutherland / Polynomial
Graham Sutherland / Polynomial
@gsuberland@chaos.social  ·  activity timestamp last week

anyone got experience using deguassing wands, such as the one pictured, on CRTs that don't have built-in degaussing coils? do they work? any sage advice from arcade & retro tech enthusiasts?

the little 4-inch CRTs we used in the infopoints at EMF Camp have some nonlinear warping that isn't corrected by tweaking the deflection oscillator amplitude/phase adjustment pots, and also isn't consistent with the tube curvature, so I'm suspicious of static magnetic fields.

#RetroComputing #Arcade

a generic deguassing wand. it's a green plastic block with a mains power cable coming out of it. my guess is they're feeding AC into a magnetic coil, probably with a series resistor, to produce an alternating magnetic field.
a generic deguassing wand. it's a green plastic block with a mains power cable coming out of it. my guess is they're feeding AC into a magnetic coil, probably with a series resistor, to produce an alternating magnetic field.
a generic deguassing wand. it's a green plastic block with a mains power cable coming out of it. my guess is they're feeding AC into a magnetic coil, probably with a series resistor, to produce an alternating magnetic field.
  • Copy link
  • Flag this post
  • Block
Joel Michael
Joel Michael
@jpm@aus.social replied  ·  activity timestamp last week

@gsuberland oh wow I haven’t used a degaussing wand in… uh… 30 years? Last time I used one was to correct a persistent rainbow artifact in one corner of a monitor that actually had built-in degaussing.

I love the rainbows.

  • Copy link
  • Flag this comment
  • Block

bonfire.cafe

A space for Bonfire maintainers and contributors to communicate

bonfire.cafe: About · Code of conduct · Privacy · Users · Instances
Bonfire social · 1.0.1 no JS en
Automatic federation enabled
Log in
  • Explore
  • About
  • Members
  • Code of Conduct