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Author Topic: Supply 24V using a dual-motor controller 12V  (Read 1103 times)
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Brazil
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Hi!
I bought one of these "L298N Dual H Bridge DC stepper Motor Driver Board module"
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220793677780&ssPageName=STRK:MEWNX:IT
My plan is to use it in a solenoid push/pull.
but I can provide 24V to the solenoid by placing the outputs (12V each) in series? Or will I have a problem?

Like...
http://imgs.inkfrog.com/pix/ivanchang735/2_011.jpg
output1 - connected to solenoid (+)
output2 + output3 - connected together
output4 - conected to solenoid (-)

then I put output1 as 12V, output2 as GND, output3 as 12V and output4 as GND???

Thanks
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Phoenix, Arizona USA
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I've never seen an L298 used in that manner; I doubt it would work, because if it did, such an application would be described in the datasheet for the device (you would do well to read it, too). It is possible with the L298 (and with that board, if the schematic is accurate) to operate in "bridge mode", to double the current output of the L298 (to about 4 amps) - so in other words you can control either 2 x 2A (max) DC motors, or a single 4A (max) DC motor (or use the L298 to drive a single bipolar stepper, of course). Doubling the voltage, though? I don't think that will work...
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Brazil
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I've never seen an L298 used in that manner; I doubt it would work, because if it did, such an application would be described in the datasheet for the device (you would do well to read it, too). It is possible with the L298 (and with that board, if the schematic is accurate) to operate in "bridge mode", to double the current output of the L298 (to about 4 amps) - so in other words you can control either 2 x 2A (max) DC motors, or a single 4A (max) DC motor (or use the L298 to drive a single bipolar stepper, of course). Doubling the voltage, though? I don't think that will work...

Hey cr0sh, thanks for reply
Yes, I read that could "double the current" when you put the outputs in parallel.
I looked into the datasheet, is not really about increasing the V that way.
I am very afraid to make that connection. I do not think I will. xD
The best would be to connecting two batteries in series, and then put the 24V in the driver, isnt it?
« Last Edit: August 07, 2011, 11:08:26 pm by xanok » Logged

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output1 - connected to solenoid (+)
output2 + output3 - connected together
output4 - conected to solenoid (-)

then I put output1 as 12V, output2 as GND, output3 as 12V and output4 as GND???

Thanks
output2 = GND, output3 = 12V, you connect output2 and output3 together... What do _you_ think will happen? 
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Brazil
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Sum of the Vs or Big BOOM, thats why Im asking =P
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Manchester (England England)
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BOOM
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Brazil
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Ok! Thanks =P
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