Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Amplifier Discussion => Topic started by: Mizno on August 11, 2009, 12:41:34 AM

Title: fast vs slow blow?
Post by: Mizno on August 11, 2009, 12:41:34 AM
on an old pre univox (unicord stage 25) amp that i have i blew a fuse and it says to replace with a mdv 1/2 amp 250v fuse. would i have to use a fast or slow blow fuse for this? im not sure and i figured i would ask around before i went and got some
Title: Re: fast vs slow blow?
Post by: armstrom on August 11, 2009, 02:46:24 PM
most amps need slow-blow fuses due to inrush current when first turning them on. You want the fuse to be able tolerate the elevated inrush current while the filter caps charge up but blow if there is a sustained over current situation such as a short.
-Matt
Title: fast vs slow blow?
Post by: Mizno on August 12, 2009, 01:38:23 PM
thanks for the advice