I still think the Fast
Acting Fuse and Diode is the answer.
I got small pigtail 4A
fuses from All Electronics.? They are 30 cents.? I wrapped a
spare inside BitX.
If I ever Blow it, the
replacement is right there.
They have wires
soldered on them, no need for a big Fuse Holder on the back of
BitX.
Poly fuses take time
to go off.? They typically "Open" at 2X there hold current.?
So you have to make design decisions.
I never have reverse
biased my BitX?? So It it should be a rare event.
I will get Fast
Response if I do, better protection than Poly Fuse.
A 3 Cent 1N4002 will
blow the fuse.
To me, considering the
rarity of the event, it is the Best Solution!? But, of course,
there are a lot of Solutions.
Yes, I know this
subject has been pounded too much, but I am too waiting for
UBit I ordered on the 9th!
Mike, WA6ISP
On 12/15/2017 2:31 PM, Richard Spohn
wrote:
The polyfuse looks very interesting, I had never heard of these
before. Downloaded the spec sheet at Jameco but there is very little
info on it. How do you reset a polyfuse, or does it reset itself
after voltage is removed? What is the trip current? How do you
connect it, or do you connect it the same as any regular fuse (the
spec sheet doesn't even have a sample schematic...) -- Thanks and 73,
Rich WB2GXM
--
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."
Mike@...
