Ask an XPert -- Questions for the Power Supply Experts

Я не специалист в этой области, но пишите что конкретно интересует. Может быть смогу Вам помочь.

Mikhail,

I'm very glad to help you with any power supply questions that you may have. My knowledge of heat pumps is pretty limited, but I'd be happy to try to help you.

Feel free to either post your questions here or email me at ksmith@xppower.com and we'll see what we can do for you.

Does anyone know if there have been any equivalents manufactured for the National LN1042N or LM1830N

I have an question about that comonent.

wiring of alarm &control output- not clear/

may u give me detail about wiring?

thnks

Hi,

I am trying to find a replacement capacitor for my TV repair project.

The one removed I found to be cracked and burned and is labeled CBB81, 1000V, 68nJ.

I don't know what the nJ relates to.

This is a 1 inch long 3/4 inch high capacitor, blue in color.

I believe it is a film capacitor.

is the nJ comparable to some value in microFarads?

I have to believe that nJ is referring to nano-Joules, an amount of energy. But I could be wrong. I have not run across anything like that in the capacitors we deal with for most power supplies.

You may try asking one of the capacitor manufacturers on Element 14.

This is metallized polypropylene film capacitor,capacitance 68nF=0.068uF, tolerance 5%, nominal DC voltage 1000V

In abbeviation "nJ", "n" stands from "nF", "J" is tolerance symbol

http://www.ntcyc.cn/capacitor/155504167.htm

http://uk.farnell.com/vishay-bc-components/bfc237520683/capacitor-0-068uf-1000v/dp/1166094

Hi i m Denise. I need help to find a way to program a graphic LCD (BTHQ128064AVO) by using dspic33f128GP804.

Regards

Dear members,

I'm with a small problem in my circuit design.

I have a power system here, which is supplied with 12 Differential Voltage and Current Measure.

My micro-controller is supplied by 5 Differential Voltage and Current Measure.

The power system and the micro-controller DO NOT share the same ground.

My question is: how to make measurements of voltage and current on the power system and feed this information into the micro-controller? If they had the same ground, that would be easy. But with different grounds, I'm not really sure how to do it!

The voltages that I have to measure range from 0 to 12 Differential Voltage and Current Measure. The currents that I have to measure range from 0 to 30 Differential Voltage and Current Measure.

Thank you very much for your attention!!

i forgot my username and password and can't even get into the system.