Subject:
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RE: How do I limit current effectively?
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 9 Aug 1998 05:00:34 GMT
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Original-From:
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Joe Martin <joema@mpx.com+NoSpam+.au>
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Viewed:
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1334 times
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National Semiconductor make an "LM317" 3 terminal adjustable regulator which
can easily be used as a current limiter. I am not sure if the schematic for
this particular application is included with the Data sheets so I'll add it
here.
Current Limiter
________________ R1
Vin |LM317|___/\/\/\_________Iout
|_____|Vout |
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Vadj|____________|
Iout = 1.25/R1 where I is the output amperage
Joe Martin
> -----Original Message-----
> From: Phil [mailto:thehahns@netwurx.net]
> Sent: Sunday, 9 August 1998 11:52
> To: handyboard@media.mit.edu
> Subject: How do I limit current effectively?
>
>
> I have 2 large motors that draw about 2 amps. They are powered by
> a battery
> that's 6v at 2amp. How can I limit the motors so that they can
> only draw 1/2
> amp?????
>
> I know on my first robot (ahh, fine memories of burning resistors), I just
> made a bank of resistors, but that got extremely hot and melted the nearby
> electrical tape and even softened the LEGO piece it was on. What method
> would be better?
>
> thanks!
> phil
> thehahns@netwurx.net
>
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Message is in Reply To:
 | | How do I limit current effectively?
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| I have 2 large motors that draw about 2 amps. They are powered by a battery that's 6v at 2amp. How can I limit the motors so that they can only draw 1/2 amp????? I know on my first robot (ahh, fine memories of burning resistors), I just made a bank (...) (26 years ago, 9-Aug-98, to lugnet.robotics.handyboard)
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