Subject:
|
Re: MOTOR DRIVERS
|
Newsgroups:
|
lugnet.robotics.handyboard
|
Date:
|
Mon, 25 Oct 1999 20:20:45 GMT
|
Original-From:
|
Larry Kruzan <larry_k@mtco&spamcake&.com>
|
Viewed:
|
556 times
|
| |
|
|
> Question?
>
> When using a motor which will exceed the driver chip max current, will
> that fry the chip or the handy board?
>
> Paul
Hi Paul,
I think it would take out the chip, but I am currently doing this by
installing a oversize heatsink & fan to the controller chip and pulsing the
motor instead of constant current. Exceeding the max current capacity but,
limiting duration and increasing heat dissipation works. Sometimes. :o)
Larry
|
|
Message has 1 Reply:
 | | Re: MOTOR DRIVERS
|
| It won't necessarily fry the chip. L293s (and the TI equivalent) have a thermal protection mode. If the chip gets too hot, it will turn itself off. Most of the time, this protects the chip against over-current. However, it is still possible to fry (...) (25 years ago, 25-Oct-99, to lugnet.robotics.handyboard)
|
Message is in Reply To:
6 Messages in This Thread:
  
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
