subject:"\[PSES\] TCOs in microwave oven"

Re: [PSES] TCOs in microwave oven

2012-03-12 Thread Brian Oconnell

UL923 - potatoes + magnetron + transformer + fan -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Scott Xe Sent: Saturday, March 10, 2012 2:37 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: TCOs in microwave oven In microwave ovens, there are a number of TCO

[PSES] TCOs in microwave oven

2012-03-10 Thread Scott Xe

In microwave ovens, there are a number of TCO in HV transformer, in cavity, etc. Actually, in order to meet relevant safety standard, only one TCO is good enough. Why is it in need of more than one TCO? How to define the functionality/pass criteria for the 2nd and 3rd TCOs if one TCO is