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 Robotics / Handy Board / 5998
5997  |  5999
Subject: 
Re: Increasing current output to motors on HandyBoard
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Fri, 9 Apr 1999 05:01:17 GMT
Original-From: 
Chuck McManis <cmcmanis@IHATESPAMmcmanis.com>
Viewed: 
973 times
  
At 11:46 PM 4/8/99 -0400, Ian Nieves wrote:
...Is there
some stacking that would allow more current to pass safely?  (I am
looking for a relatively simple solution that can be implemented quickly
and easily.)  Can i stack two TI sn754410ne on top of each other?

Stacking the chips is doable but you will toast them when you get near
their current limit. An easier solution is to use the TI chips to drive
power transistors that are acting as voltage followers. This lets them take
the current. Alternatively you can pull the L293 chips out of the board and
wire the sockets up to some National LM18200 H-bridges that will handle
these motors at 12volts.

--Chuck



Message has 1 Reply:
  Re: Increasing current output to motors on HandyBoard
 
Another solution to this which is easier but more expensive is to use the output of the motor driver chip to drive solid state relays. You need the relays that use 5 volts for control and that will switch DC. The relays I use have flyback diodes in (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)

Message is in Reply To:
  Increasing current output to motors on HandyBoard
 
I am looking to drive a radioshack motor off my HB. Its rated at 9V - 18V. It claims that at maximum efficiency it will draw 1.98 Amps. My HB uses the TI sn754410ne motor controller and is rated only up to 1 amp. If i replace this unit with a L293b (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)

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