Re: Heat sink temperature rise

The temperature of the heatsink should also be concerned when we determine the use of the adjacent components such as PCB, wires, capacitors' operating temperature rating and plastic parts... etc... Tac Pham HC Power PowerOne TSD --- This message

Re: NRTL acceptance

Hello all, Would the NRTL program be a big plus for the ITE certified component, such as power supply??? Tac Pham HC Power, inc. I tried to recall NRTLs that were approved for asessments of ITE to UL1950. I did not overlook MET (listed in my note), but may have missed NTS which may fit

Re: 90V 47Hz - Is this a realistic combo

Switch mode supply: worse case (functionality and heating) is low line (-10%) Linear supply: worse case in functionality is low line but worse case for heating is hi-line (+10%.) Tac Pham Disagree. A switched mode power supply (SMPS) will draw more current at low bus potential to provide

RE: Rack System Safety (UL1950/EN 60950) Questions

to accept each others test data I believe, but I don't believe that they will accept each others marks. RRR. They don't accept each others mark, but would they review and accept test data??? Tac Pham HC Power -- From: Jim Eichner [SMTP:jeich...@statpower.com] Sent

EN 60950 and component heating

not help, just take two Tynenol and call the doctor in the morning. Good luck. Tac Pham ph...@compuserve.com