[chbot] 4A Blade Fuse

[Henri Shustak]

4AMP Fast Blow Ceramic Fuses are easy to source.

Just an idea? I am guessing this is on not on the AC side but on the DC side. Also, that means you need to deal with that 100V on the output (assuming the fuse is on the output side). Most car fuses are rated upto about 35V not designed to go to 100V. Ceramic would be the way to go.

If it is on the AC side of the transformer, then defiantly you will want to consider something easier to switch out in future a ceramic or glass fuse in a holder would allow the fuse to be related without taking the gear to bits like you are having to do now.

Henri 


> On 15/05/2022, at 9:10 AM, Spencer Travers <spencer.travers at gmail.com> wrote:
> 
> Oddly enough it's a fuse in a PA amplifier with a 100V transformer output. The fuse is PCB mounted and sits on the DC power rail after the rectifier circuit.
> 
> Good point about tolerances. Unfortunately the venue this is installed in had a fire in the past so I am reluctant to replace the fuse with something different even if the risk is very low.
> 
> Spencer
> 
> On Sat, 14 May 2022, 23:50 Robin Gilks, <gb7ipd at gmail.com> wrote:
> Since the tolerance of this type of fuse is pretty wide (I would expect -30%/+50%) then I'm sure 3A or 5A would be fine. 
> In a car, 95% usage of a fuse is to protect the wiring from that monster supplier of amps called a battery so very rarely is the value critical (I'd go for 5A personally!)
> 
> 
> On Sat, May 14, 2022 at 6:56 PM Spencer Travers <spencer.travers at gmail.com> wrote:
> Does anyone in Christchurch have a 4A automotive blade fuse in their parts bin? Or know where I can get some locally? If you do it would save me a mail order. Seems like an unusual value and few places have it.
> 
> Thanks
> 
> Spencer
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.ourshack.com
> https://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Meetings usually 3rd Monday each month. See http://kiwibots.org for venue, directions and dates.
> When replying, please edit your Subject line to reflect new subjects.
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.ourshack.com
> https://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Meetings usually 3rd Monday each month. See http://kiwibots.org for venue, directions and dates.
> When replying, please edit your Subject line to reflect new subjects.
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.ourshack.com
> https://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Meetings usually 3rd Monday each month. See http://kiwibots.org for venue, directions and dates.
> When replying, please edit your Subject line to reflect new subjects.