| Author |
Message |
ericmar
Joined: 14 Apr 2004
Posts: 279
Location: Singapore
|
 04 Sep 2008 10:20 How to deal with start surge current problem? |
|
|
|
|
Dear All,
I am having a problem with a motor operated device which requires +6V supply @ 2.5A. The motor is drawing current as high as 2.5A during the initial start-up period when it was turned on. The period only takes about less than half of a second. However, my whole system seems to be dying off when the motor is activated. I am suspecting that the motor draws as much current as it needs from the power supply which in results causing the voltage drop and the whole system resets by itself.
I wonder if a supercap can be used to deal with such a problem. Any idea?
Thanks for any help in advance.
Regards,
Eric
|
|
| Back to top |
|
 |
FvM
Joined: 22 Jan 2008
Posts: 5154
Helped: 766
Location: Bochum, Germany
|
04 Sep 2008 11:42 Re: How to deal with start surge current problem? |
|
|
|
|
| A soft start, e. g. by PWM or a series resistor, would be an obvious solution.
|
|
| Back to top |
|
|
hameeds01
Joined: 23 Aug 2005
Posts: 293
Helped: 12
Location: NUST Islamabad
|
04 Sep 2008 12:38 Re: How to deal with start surge current problem? |
|
|
|
|
use a high current power supply 6v @ 3.5A
or introduce a low value resistance during starting process & then bypass it after 0.5sec
|
|
| Back to top |
|
|
Google
AdSense
|
04 Sep 2008 12:38 Ads |
|
|
|
|
|
|
| Back to top |
|
|
sec
Joined: 08 Aug 2006
Posts: 98
Location: Canada,QC
|
23 Sep 2008 3:55 Re: How to deal with start surge current problem? |
|
|
|
|
| A thermistor maybe, like 100 ohm and when it heat it the value decrease near to 0 ohm
|
|
| Back to top |
|
|
