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24v dc motors can it run at all with 12vdc - Invacare Supply Group Health & Beauty

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Sure. Just slower.
If you remove the motor from a power wheelchair to use in other applications keep this in mind; these motors are designed for PulseWidthModulation Speed Control (apx. 10kHz) with a feedback control to keep the speed more consistent. Feedback and pulsing is key to power and efficiency. If you run them at 12 volts without a pulse control the current to power output is much higher and the I*I*R (I squared times R) losses are higher - dissipated as heat. The motors will run very hot under a load with DC that isnt PWM'ed.
If the use/cool down duration is short you should not have issues.

Posted on May 13, 2014

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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I bought a pride wrangler mobility scooter. Did not move could hear a click coming from left motor. took right motor off and tore it down. It was all glazed over.


If two 24v batteries are the standard fitment it isn't likely it would be fitted with a 36v motor - unless some bright person fitted the wrong one...

I am not sure what you mean by "glazed over" unless it is the commutator you refer to? A commutator made from quality materials and fitted with brushes made from the correct grade of carbon or copper/carbon and being run at approx. the correct voltage is likely to become well polished and may become carbon black in colour but that is without detriment.
It is permissible to clean the commutator. I find spinning the armature in a drill and using a fine emery cloth is adequate.

Once reassembled the motor can be connected directly to 24 volts for testing.

Nov 06, 2016 | Pride Health & Beauty

1 Answer

No fan or heat on gas furnace


Once you have confirmed 12vdc to connector at furnace, just remove wires to 2 blue from furnace and join the 2 blue together to see if furnace runs. That just by-passes thermostat. What is furnace in? 12 volt-dc, or maybe 120AC, with 24V transformer if park model or similar.

Dec 03, 2012 | Dometic Rooftop RV Air Conditioner

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0025 error code


this is a common problem on this models
the motor is not turning
steps
first take out the dev unit and see if it has toner in it if the dev unit is full then check the sub hopper unit and if any one of these are empty then that motor is bad also verify if you are getting 24v at the motors that are driving the toner into the dev unit 2 motors located behind the primary charge unit cover
if 24v is missing then replace the pico fuse on the dc controller or replace the dc controller
if 24v is present then replace the motor
if you still need help contact me mickey at mnmsllc.com

Sep 11, 2012 | Canon Toner Cartridge For Cnm Ir 6570,...

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How can I operate my LG 26LE5300 LED LCD TV in my motorhome the most direct way possible (i.e....without an inverter)? This low power (40-50 watts) TV has an external brick to convert 120 AC to it's...


1) You need to look at the output current rating (AMP) of this AC to 24dc adapter, this 24vdc adapter is a regulated switching power supply that will maintain 24vdc output up the maximum current rating and also has shutdown circuits if the over current draw is detect and also if the output voltage goes up beyond 24vdc to protect the load (TV).

2) To use 12vdc to 24vdc DC-DC booster, it should have the following spec:

A) The output current rating should be at least 20% higher than the load requires to give its head room.
B) It must have regulated output that will maintain the 24vdc when the input (12vdc) will vary from 10vdc ~16vdc or higher since your batteries will not maintain exact 12vdc all the time.
C) It must have good protection circuits that will protect it self from reverse polarity connections, shorted output protection, over voltage output protection.
D) It should provide AC ripple spec on the 24vdc output, it should be in the milli-volt range (you will always get AC ripple riding on top of DC when you rectify the AC into DC).

These are the minimum requirement for your DC to DC booster, which you need to protect your TV and your motor home from burning down.
I hope I explain it OK to you.

Please leave rating if it helps.

Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

Jan 15, 2011 | LG 26LE5300 26 in. LCD HDTV

1 Answer

Need 24v power supply, where can i get one.


Hi JR,

You didn't specify AC or DC. That's ok, I'm having a two-fer-one special.

Doorbell transformers give back 24VAC

Two 12VDC batteries in series gives you 24VDC. Overkill?

Transformers from many HP printers ar between 20 to 30 VDC.

The source I use is GoodWill. In the electronics or computers section, they usually have a big box of them.

Hope this helps you out
Mike

Oct 11, 2009 | Boston Acoustics Audio Players & Recorders

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