[Johnson] The Viking II

[Roy Morgan]

At 09:06 PM 2/24/2004 -0700, KENNETH A CRIPS wrote:
>...I find I have a roasted filament transformer.  I have a replacement for 
>it but before I fire it up I want to fuse it.  Any advice on how to figure 
>out a value for this fuse.

Figure the normal secondary load, referred back to the primary. Add about 
15 percent for losses. This is about the normal operating current.  Double 
that for fuse size.  Use a slow blow fuse if it blows due to inrush current.

A simpler method is to start with low value fuses, and increase them until 
they blow only sometimes on turn-on. Then increase one size.

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --