Ask an XPert -- Questions for the Power Supply Experts

This thread has been closed to new questions.

However, we welcome you to Post Your Question about Embedded in the element14 Community Embedded group. You'll find many fellow members and experts who have just the answer you're looking to find!

Thank You, Your Friends at element14 Community

Kent Smith

Applicaitons Engineer

XP Power

Former Member over 14 years ago

Kent,
I want to power a 0.5 ohm heater wire to a constant 40 Watts to use on the end of a hand held probe as a Hotwire Ignition test. Can this be done using just a 15 Volt, 15 amp power supply with a 1ohm series resistor? Just set the PS to 14.5 volts and I have a 40 Watt heater. Am I missing something?
Thanks!
Mike
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago

I am looking for transistor for switching relay 3.3V. I used BC847 but it is not suitable.

In switched state is voltage C-E about 1 Volt.

I am looking for switching transistor with low C-E voltage. Please advise.

Best regards
Fero
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago

Given 1000 CPM reader,2 microseconds average instructions is needed and 1000 LPM is given. How long will it take to print a page?
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago

Добрый день! Можно-ли в сварочном инверторе поменять SKW20N60SKW20N60HS(их нет в каталоге Farnell) на SKW20N60SKW20N60. Если нельзя, тогда подскажите пожалуйста аналог. Заранее благодарен.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
RWM over 13 years ago in reply to Former Member

SKW20N60SKW20N60HS это "high speed" SKW20N60SKW20N60 для частот выше 30 кГц. Я думаю можно поменять на
FAIRCHILD SEMICONDUCTOR - HGTG12N60A4DHGTG12N60A4D
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago in reply to RWM

По описаниям подходят (я только начинаю разбираться в даташитах т.е. сравнивать наиболее важные показатели IGBT). Жаль только, что сайт не руссифицирован. Приходится пользоваться переводчиком. А в остальном всё хорошо. Спасибо за столь быстрый ответ.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago

Buenos días

Quisiera saber si este producto http://mexico.newark.com/avago-technologies/heds-5500-g06/optical-encoder/dp/54K2759
es igual o puedo utilizarlo en un CTP (Plate Driver 8) que tiene el siguiente número de serie: HEDS-5500 I12.
Gracias.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago

Hi Kent, I need some help with a heat pump system I'm currently developing, would you be able to help me with a couple of answers? (I see that your expertise is in Power Supply )
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago in reply to Former Member

Добрый день! Сравнивая даташиты этих отоэлектронных приборов, я понял, что буквено-цифровое обозначение после знака # указывает на диаметр вала и Resolution (Cycles/Rev). На этой странице есть ссылка на хороший даташит http://www.farnell-volga.ru/product.html?p_id=1161195

Good day! Comparing these datasheets otoelektronnyh devices, I realized that the letter-numeric designation after the # sign indicates the diameter of the shaft and Resolution (Cycles / Rev). This page has a link to a good datasheet. http://www.farnell-volga.ru/product.html?p_id=1161195 Sorry for my English.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
Former Member over 13 years ago in reply to Former Member

Вот здесь ещё описания http://catalog.gaw.ru/index.php?page=component_detail&id=2501
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel