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4hv.org :: Forums :: General Science and Electronics
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What is a convergence correction circuit?

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Arcstarter
Tue Apr 01 2008, 07:06PM Print
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
I have 3 of these. The part number is stk391-020. What do they do?
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Dr. Dark Current
Tue Apr 01 2008, 07:18PM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Are they from CRT or rear-projection TVs? If so, they try to align the red, green and blue colors on the screen.



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Proud Mary
Tue Apr 01 2008, 08:21PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
STK391-020 is a two-channel convergence correction circuit for video projectors.

You can view the data sheet here:


Link2
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Arcstarter
Tue Apr 01 2008, 09:10PM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Is there any kind of circuit i may be interested in that i make with this? Like maybe a high voltage circuit like an oscillator?
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Proud Mary
Tue Apr 01 2008, 10:55PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Well now, what we have here is a pair of amplifiers capable of driving an inductive load of 150uH at frequencies up to 60kHz.

You might be able to drive a LOPT (a "flyback"} with them.The primary on most modern LOPTs is in the region of 3 - 4mH, which may make these circuits malfunction. but you may be able to find one with enough space on the core to let you wind your own primary with fewer turns.

You'll have to try it and see!
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