01-08-2009, 08:29 AM
Hey Robert
I too would tend to agree with that. On the other hand, I live in Florida and we have a lot of lightning and switching transients on the line. Now a lightning strike in the right situation will damage/burn up/ hurt the feelings of your power tramsformer and take the MOV any way. I put one in mine anyway as a "hopeful help" in case of a surge event. I also put a thermistor in series with its AC mains. It provides a softer start at power on and also lowers the primary volts by 5-6 volts while operating and hasn't affected the performance.
By the way, MOV devices have a finite life span dependant on their exposure to surges. A 500 JJoule device will take, 1- 500 joule hit; 2- 250 joule hits; 100- 5 joule hits; (you get the idea)in its lifetime. There is not a practical way for the average person to test them and a bad one looks as good as a new one. Yup, all those power strips youve had all these years are likely in need of replacing too!
I too would tend to agree with that. On the other hand, I live in Florida and we have a lot of lightning and switching transients on the line. Now a lightning strike in the right situation will damage/burn up/ hurt the feelings of your power tramsformer and take the MOV any way. I put one in mine anyway as a "hopeful help" in case of a surge event. I also put a thermistor in series with its AC mains. It provides a softer start at power on and also lowers the primary volts by 5-6 volts while operating and hasn't affected the performance.
By the way, MOV devices have a finite life span dependant on their exposure to surges. A 500 JJoule device will take, 1- 500 joule hit; 2- 250 joule hits; 100- 5 joule hits; (you get the idea)in its lifetime. There is not a practical way for the average person to test them and a bad one looks as good as a new one. Yup, all those power strips youve had all these years are likely in need of replacing too!
Dave Casazza
Keep em glowin and goin...
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