stamps and SCR''s
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Posts: 46,084
Thanks!. And I'll bet you can save me how many hours with a sentence
or two on how you used the PWM feature?
Sorry for begging, this is my first stamp application.
Chris
Original Message
From: s premena [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=aBvVWXZNr3LBmRWUg2d51GVU8CUsde-JsWg8IzYmr00fIpNhrzdtqUQ0VfQadmdeAZajJhjV]premzee@j...[/url
Sent: Saturday, May 13, 2000 1:56 PM
To: basicstamps@egroups.com
Subject: [noparse][[/noparse]basicstamps] RE: stamps and SCR's
>>
My big victory will be when I can do phase angle firing control of
back-to-back SCR's with stamp output.
<<
Well, the stamp is too slow for that. I did a four channel dimmer
using 3 amp DC controlled Velleman dimmer kits from Jameco [noparse][[/noparse]pn
128901
@$20] and driving their dc 0-5 volt phase control inputs from opamp
integrated PWM signals from the stamp. It works well. The schematic
of the kit is on the Jameco website and they sell the unusual IC
used for about $5.,.
There are 1 amp triacs optoisolated [noparse][[/noparse]Digikey, Mouser] - a DIP
package that has the opto driver for the triac in it.
Good luck.
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or two on how you used the PWM feature?
Sorry for begging, this is my first stamp application.
Chris
Original Message
From: s premena [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=aBvVWXZNr3LBmRWUg2d51GVU8CUsde-JsWg8IzYmr00fIpNhrzdtqUQ0VfQadmdeAZajJhjV]premzee@j...[/url
Sent: Saturday, May 13, 2000 1:56 PM
To: basicstamps@egroups.com
Subject: [noparse][[/noparse]basicstamps] RE: stamps and SCR's
>>
My big victory will be when I can do phase angle firing control of
back-to-back SCR's with stamp output.
<<
Well, the stamp is too slow for that. I did a four channel dimmer
using 3 amp DC controlled Velleman dimmer kits from Jameco [noparse][[/noparse]pn
128901
@$20] and driving their dc 0-5 volt phase control inputs from opamp
integrated PWM signals from the stamp. It works well. The schematic
of the kit is on the Jameco website and they sell the unusual IC
used for about $5.,.
There are 1 amp triacs optoisolated [noparse][[/noparse]Digikey, Mouser] - a DIP
package that has the opto driver for the triac in it.
Good luck.
________________________________________________________________
YOU'RE PAYING TOO MUCH FOR THE INTERNET!
Juno now offers FREE Internet Access!
Try it today - there's no risk! For your FREE software, visit:
http://dl.www.juno.com/get/tagj.