Quote:
Originally Posted by cathoderay57
Thanks for the replies. I have some spare Class X2 0.1uF 275v AC caps. Is one of those across the contacts likely to do the job?
Cheers, Jerry
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One experiment you could do, after you have used it for a year, depending on how often the motor goes on & off, is to check the uF value of the X2 capacitor. In this application (if it is a typical metalized paper type) you will probably find the uF capacity has dropped down, because with each snubbing event the film is often slowly destroyed. I have given up on these now and I would simply use a 0.1uF 1000V or 1500V DC rated poly or MKP cap as the snubber, or a 1200V 0.1uF capacitor rated for use in a colour TV's line output stage as a tuning capacitor , is a very good choice as they have a very low ESR. These caps will all be bigger and bulkier than the X2 cap but they won't degrade with time. A 1000V rated oil filled capacitor is also a good choice.