I have a farm type electric fence power supply that we use to keep 
critters (deer, raccoons, etc.) out of our vegetable garden. It is 120 
VAC 10 watt max input, and output is 440 - 660 VAC measured with a DMM.  
The power supply is only a transformer, with no other components. The 
external circuit is a ground rod, and the hot terminal connected to 
aluminum or steel wire that is insulated from earth and can go distances 
measured in miles, though I only need less than 400 feet. I have had a 
120 volt neon lamp indicator on the output side that lasted a season, 
and recently burned out. Thinking that some resistance would help, a 10K 
1/4 watt resistor was added in series with a new neon, it lasted one 
day, the resistor is still OK, lamp is out. How do I make a lamp last??
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist