PX3 Fuse Issue

[Jim GM]

My PX3 Is fused with a 1amp ATC fuse once in a while the fuse blows. I believe the fuse blows when the power is first turned on. What does Elecraft recommends? Nothing else is connected to this fused line except the PX3. What does Elecraft recomends?Jim K9TFSent from my T-Mobile 4G LTE Device
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[Alan Bloom]

The PX3 should draw no more than about 200 mA from the 12V supply.

When power is first applied, there will be some inrush current due to
the filter capacitors but I'm surprised that's enough to blow a 1A fuse.

Is it a fast-blow type fuse?  Perhaps a slow-blow type would solve the
problem.

Alan N1AL


On 3/23/2021 3:37 PM, Jim Borowski wrote:

> My PX3 Is fused with a 1amp ATC fuse once in a while the fuse blows. I believe the fuse blows when the power is first turned on. What does Elecraft recommends? Nothing else is connected to this fused line except the PX3. What does Elecraft recomends?Jim K9TFSent from my T-Mobile 4G LTE Device
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[Jim GM]

Hi Allan Up I know what the PX3 normally draws. ATC fuse does not h as ve a slow blow style. These are automobile fuses. Yup back in the day slow blow would be the answer but not this time. I am hesitant to try a 2 amp.Jim K9TFSent from my T-Mobile 4G LTE Device
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