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replace a SPDT relay?


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maximal 
Member - Posts: 9
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Posted: June 24, 2005 at 1:59 AM / IP Logged  

can someone help me replace a mechanical SPDT relay with something that's solid-state?  here's what i'm trying to do...

replace a SPDT relay? -- posted image.

i have a StreetGlow Neon Music Interface (or MI).  it switches the ground on and off to make the neons flash to a beat.  this relay will make my neons flash alternately or wigwag.  it's way to noisy, though.  can someone help me come up with something that's solid-state?

hotwaterwizard 
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Posted: June 26, 2005 at 1:00 AM / IP Logged  
replace a SPDT relay? -- posted image.
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
hotwaterwizard 
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Posted: June 26, 2005 at 1:01 AM / IP Logged  

" This has not been tested "

Concept Schematic.

replace a SPDT relay? -- posted image.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
maximal 
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Posted: June 27, 2005 at 5:39 PM / IP Logged  
thanks hotwaterwizard, i'll try both out.  in your first reply, what the part number of the first transistor?
maximal 
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Posted: June 27, 2005 at 5:40 PM / IP Logged  
oh, and these will be able to handle about 6-10 amps, right?
hotwaterwizard 
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Posted: June 28, 2005 at 8:49 AM / IP Logged  

With a large heatsink 15 amps with a small heatsink 5 amps.

Any General Purpose PNP Transistor should work for the first picture.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

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