Although this is not a safety concern, the timer may have it's clock derived from the powerline frequency. That would make the clock, and the timer function, run slow on 50 Hz.
Regards, Ed Ed Price [email protected] Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis >-----Original Message----- >From: [email protected] [mailto:[email protected]] >Sent: Monday, May 14, 2001 9:18 AM >To: [email protected] >Subject: RE: 120V appliance on 240V supply > > > >If the frequency rating of the product is 50-60 Hz, it should be OK. >However, if the rating is only 60 Hz, there may be the >following frequency >sensitive concerns: > >* Lower output from transformers due to insufficient core size >* Slower speed fans causing cooling problems (if ac fans) >* Higher ripple currents in the rectification filter >capacitors may >increase causing higher internal temperatures which will lead >to lower life >* Lower dc output from capacitor input rectification filter >* Decreased low-line tolerance > >Richard Woods > > ---------- > From: Ravinder Ajmani [SMTP:[email protected]] > Sent: Monday, May 14, 2001 11:49 AM > To: [email protected] > Subject: 120V appliance on 240V supply > > > > Hi, > I am interested in knowing if a 120V, 60Hz microwave oven can be >safely > used on a 240V, 50Hz mains supply with a step-down transformer. > > Regards, Ravinder > > Email: [email protected] > >*************************************************************** >************ > Always do right. This will gratify some people and astonish the >rest. > .... Mark Twain ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
