diodes...
Archiver
Posts: 46,084
The diodes need to go across the coil to snub the reverse EMF. Cathode to
the coil terminal that has the positive voltage applied. The 1N4005 is
like a 600V diode.
Original Message
From: andrew [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=1bK49fsXZJyFc-zlEhJNFNFwljl-g0TI3l8B8q5VyQ2W6wlkTEQt1HS0YJSeEYIh_nKXXSe_llrq1wtyUE7-a24]manwithapipe@y...[/url
Sent: Friday, January 24, 2003 6:04 PM
To: basicstamps
Subject: [noparse][[/noparse]basicstamps] diodes...
Hello again!
I've got a basic question about diodes & the opto22
rack/modules. I'm using the opto22 8-rack to control
8 10.5V solenoids that use about 0.5A-1.0A each.
The opto22 manual suggests using a commutation diode
for inductive loads and specifies the 1N4005.
However, this isn't enough for my power usage as it
only can handle a max forward voltage of 1.1V/1.0A
Does anyone know of a similar general purpose diode
that will work for my power requirements? Thanks!
Andrew
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
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/
the coil terminal that has the positive voltage applied. The 1N4005 is
like a 600V diode.
Original Message
From: andrew [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=1bK49fsXZJyFc-zlEhJNFNFwljl-g0TI3l8B8q5VyQ2W6wlkTEQt1HS0YJSeEYIh_nKXXSe_llrq1wtyUE7-a24]manwithapipe@y...[/url
Sent: Friday, January 24, 2003 6:04 PM
To: basicstamps
Subject: [noparse][[/noparse]basicstamps] diodes...
Hello again!
I've got a basic question about diodes & the opto22
rack/modules. I'm using the opto22 8-rack to control
8 10.5V solenoids that use about 0.5A-1.0A each.
The opto22 manual suggests using a commutation diode
for inductive loads and specifies the 1N4005.
However, this isn't enough for my power usage as it
only can handle a max forward voltage of 1.1V/1.0A
Does anyone know of a similar general purpose diode
that will work for my power requirements? Thanks!
Andrew
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
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/
Comments
the coil terminal that has the positive voltage applied. The 1N4005 is
like a 600V diode.
Original Message
From: andrew [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=zcEeTKUuOWLDCciuggyH0MT211ePLGrwslltGuYZgZhr9q7kd6hxbJK4r7RAtt9w7IH3jhjHn5lgPojEHPc]manwithapipe@y...[/url
Sent: Friday, January 24, 2003 6:04 PM
To: basicstamps
Subject: [noparse][[/noparse]basicstamps] diodes...
Hello again!
I've got a basic question about diodes & the opto22
rack/modules. I'm using the opto22 8-rack to control
8 10.5V solenoids that use about 0.5A-1.0A each.
The opto22 manual suggests using a commutation diode
for inductive loads and specifies the 1N4005.
However, this isn't enough for my power usage as it
only can handle a max forward voltage of 1.1V/1.0A
Does anyone know of a similar general purpose diode
that will work for my power requirements? Thanks!
Andrew
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
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/
latest response noted, the diode is connected "reverse biased" so the reverse
voltage (breakdown voltage) is what is of concern.
[noparse][[/noparse]Non-text portions of this message have been removed]