microwave

Discussion in 'Wireless & RF Design' started by dmsmith, Dec 3, 2009.

  1. dmsmith

    Thread Starter New Member

    Nov 14, 2009
    11
    0
    Where can i obtain a 600 watt microwave fuse? Everybody tells me there is no such thing as a 600 watt fuse.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    There are not. A fuse is rated in amperes. Power, in watts, is the product of the voltage times the amperage. A fuse protecting a 600 watt circuit can, at one end, be 600 amps in a 1 volt circuit (not likely), or a 1 amp fuse in a 600 volt circuit (somewhat more likely).

    Additionally, you do not fuse, say, the output of a klystron outputting 600 watts of microwave energy. The fuse will not be able to interrupt the current, as the RF energy will cause an arc. You place the fuse so as to interrupt the AC supply current into the circuit, or in a DC supply line. High frequencies cause arcing.
     
  3. dmsmith

    Thread Starter New Member

    Nov 14, 2009
    11
    0
    Thanks for the xplanation about the 600 watt microwave fuse. Should have known that.Don't know what i was thinking about.Might be my age.
    Dmsmith.
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Better than being 18 and running all over looking for 10 fathoms of waterline, or a can of relative bearing grease.
     
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