AW: [basicstamps] Dying Stamp
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Posts: 46,084
Hi Scott,
I'm driving 2 sets of components:
1. a solenoid valve -- this is drived through an AC solid state
relay, triggered by one of the output pins, hooked into the stamp's
power supply ground.
You cannot drive the relay directly with a stamp-pin because it might take
more current that the stamp can deliver. You need a transistor to drive it.
Did you use a diode to prevent the relay to shoot back a current when turned
off?
2. a sparking mechanism -- this is also triggered by one of the
output pins, but through first a DC solid state relay and then a
standard coil relay. It has a 12V power supply.
So, the power supplies and circuits are electrically isolated as far
as I can tell.
Any ideas?
Thanks,
Scott
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I'm driving 2 sets of components:
1. a solenoid valve -- this is drived through an AC solid state
relay, triggered by one of the output pins, hooked into the stamp's
power supply ground.
You cannot drive the relay directly with a stamp-pin because it might take
more current that the stamp can deliver. You need a transistor to drive it.
Did you use a diode to prevent the relay to shoot back a current when turned
off?
2. a sparking mechanism -- this is also triggered by one of the
output pins, but through first a DC solid state relay and then a
standard coil relay. It has a 12V power supply.
So, the power supplies and circuits are electrically isolated as far
as I can tell.
Any ideas?
Thanks,
Scott
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
[noparse][[/noparse]Non-text portions of this message have been removed]