Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: sdavis6736 on January 11, 2009, 07:46:07 PM

Title: Fuse Blown??
Post by: sdavis6736 on January 11, 2009, 07:46:07 PM

I have been using an 18V power supply while my robot was on the testing bench and all was well.  When I attached the robot to its battery supply for fields testing the fuse blew to the motor controller as soon as it started up.  I understand the surge current issue, but shouldn't it have blown when using the power supply also?  Why does this happen?  Any suggestions on how to fix this problem?

Title: Re: Fuse Blown??
Post by: TrickyNekro on January 12, 2009, 03:41:20 AM

It's maybe your power supply can not deliver high current... cause batteries usually can...
Get a bigger fuse and test.... :)

Title: Re: Fuse Blown??
Post by: Admin on January 14, 2009, 11:29:03 AM

Most benchtop power supplies max out at 1 or 2 amps. Your battery was probably giving out a lot more.

A fuse blows based on current.