[Amps] B- questions

Bill, W6WRT dezrat1242 at yahoo.com
Mon Nov 9 09:05:55 PST 2009


ORIGINAL MESSAGE:

On Mon, 9 Nov 2009 11:46:44 EST, TexasRF at aol.com wrote:

>Most relays need 8 to 20 milliseconds to operate. Would a 1A meter be  
>damaged by a 120v spike for a few milliseconds? I don't know but maybe someone  
>here knows.

REPLY:

That's 120 amps through a 1 amp meter for those few milliseconds. Who in his
right mind would want to chance it?    :-)

As pointed out before , the clamping diode will do its job much faster than any
mechanical relay can remove the HV. 

73, Bill W6WRT


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