Re: PSU protection with resettable polyfuse

2017-03-29 Thread Eric Smith via cctalk
On Wed, Mar 29, 2017 at 9:24 AM, Systems Glitch via cctalk < cctalk@classiccmp.org> wrote: > > Any downsides to resettable polyfuses? > > If you hit them hard enough, they'll sometimes permanently open, which is > desirable anyway but does require rework. I don't remember how they stack > up

Re: PSU protection with resettable polyfuse

2017-03-29 Thread Adrian Graham via cctalk
On 29 March 2017 at 16:24, Systems Glitch wrote: > If you hit them hard enough, they'll sometimes permanently open, which is > desirable anyway but does require rework. I don't remember how they stack > up speed-wise, I'm sure it's in the datasheets. I don't mind

Re: PSU protection with resettable polyfuse

2017-03-29 Thread Systems Glitch via cctalk
> Any downsides to resettable polyfuses? If you hit them hard enough, they'll sometimes permanently open, which is desirable anyway but does require rework. I don't remember how they stack up speed-wise, I'm sure it's in the datasheets. Thanks, Jonathan

PSU protection with resettable polyfuse

2017-03-29 Thread Adrian Graham via cctalk
Hi folks, The PSU for my Executel 8085 system is an Astec AC8151-01 40W 5A unit that puts out +5/+12/-12V. A while back somone suggested using an ATX PSU in its place which TBH I'd forgotten about untl I saw a breakout board that you plug a 20 or 24 pin ATX supply into and it terminates each rail