Mark, Please pardon my ignorance. I have a silly question. It seems to me that the purpose of brownout is to save energy by reducing voltage. Why do you test your power supply "down to 85 Vac at 50/60 Hz at the maximum specified operating temperature with high humidity conditions present" instead of "up to 106 Vac ..."? Higher voltage would consume more energy and produce more heat inside the power supply. Barry Ma Anritsu --------------------- From: "Mark Schmidt" <[email protected]>, on 11/4/99 9:45 AM:
Eastern Japan Voltage 100 Vac @ 50Hz. (Tokyo, Kawasaki, Sapporo, Yokohoma and Sebdai) Western Japan Voltage 100 Vac @ 60Hz. (Osaka, Kyoto, Nagoya, Hiroshima) I also agree with Tania and the brown-out conditions that exist in Japan. It is my understanding that 90 Vac is quite common, personally I would test down to 85 Vac at 50/60 Hz at the maximum specified operating temperature with high humidity conditions present. ---------------------- From: "Grant, Tania (Tania)" <[email protected]>, on 11/3/99 4:40 PM: Ages ago when I worked at another company that shipped products to Japan, their unwritten rule was to design in power supplies that operated without problems at 85 Vac, and that had better be designed/tested down to 80 Vac, because of the continued brown-out conditions in Japan. It seems nothing much has changed. I don't remember what was stated about the frequency tolerance. Tania Grant, [email protected] <[email protected]> Lucent Technologies, Communications Applications Group ===== Barry Ma __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
