Are buffers ( CMOS 4050 etc) any use to protect the stamp''s outputs???
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Posts: 46,084
If you're simply looking to protect your Stamp you can put 220 ohm
resistors in series with your outputs; we do this on the Homework Board
(BS2) and BS1 Project Board -- both boards are designed for students.
You may want to consider buffers if you need more current than the Stamp
can safely sink or source.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: arridh_shashank [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=ywjA2L52nQ8U3VOpUP_4p23sN9yfQjPEEBOm-ZVZiP12gRm-_Y39UC2z5-XpzxPUdfj2uPMU-JYCVUgp_slOUOsfzw]arridh_shashank@y...[/url
Sent: Monday, December 29, 2003 1:36 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Are buffers ( CMOS 4050 etc) any use to protect
the stamp's outputs???
Hey
I'm not sure my self if this will work or not so I thought I'd ask
you guys [noparse]:D[/noparse]. I wanted to protect my stamp outputs from gettin
damaged by sourcing and sinking too much current so I looked around
and found the cmos 4050 chip non inverting hex buffer. I was
wondering if it will protect my stamp from sourcing and sinking a
lot of current. What I plan to do is to use it as a intermediate
between my stamp and my output device so as to protect the stamp.
Would this be a benifitial setup to have and is this the use the
chip was developed for? Furthermore will it protect my stamp from
damage in the instance that a large base current was drawn by a
transistor or similar instance? Any light you guys can shed on the
subject would be helpful.
Many thanks
Arridh
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resistors in series with your outputs; we do this on the Homework Board
(BS2) and BS1 Project Board -- both boards are designed for students.
You may want to consider buffers if you need more current than the Stamp
can safely sink or source.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: arridh_shashank [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=ywjA2L52nQ8U3VOpUP_4p23sN9yfQjPEEBOm-ZVZiP12gRm-_Y39UC2z5-XpzxPUdfj2uPMU-JYCVUgp_slOUOsfzw]arridh_shashank@y...[/url
Sent: Monday, December 29, 2003 1:36 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Are buffers ( CMOS 4050 etc) any use to protect
the stamp's outputs???
Hey
I'm not sure my self if this will work or not so I thought I'd ask
you guys [noparse]:D[/noparse]. I wanted to protect my stamp outputs from gettin
damaged by sourcing and sinking too much current so I looked around
and found the cmos 4050 chip non inverting hex buffer. I was
wondering if it will protect my stamp from sourcing and sinking a
lot of current. What I plan to do is to use it as a intermediate
between my stamp and my output device so as to protect the stamp.
Would this be a benifitial setup to have and is this the use the
chip was developed for? Furthermore will it protect my stamp from
damage in the instance that a large base current was drawn by a
transistor or similar instance? Any light you guys can shed on the
subject would be helpful.
Many thanks
Arridh
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.
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This message has been scanned by WebShield. Please report SPAM to
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