How does a transistor's current rating affect performance?
I have a NPN transistor rated for 200mA connected to a motor. The motor needs 1.5A to run effectively. When the motor and 1.5A are connected to the transistor the motor works, but very slowly. Would this be because of the transistor's 200mA rating? I would have thought it would just blow the transistor rather than just reducing the current to 200mA. Any help?
Asked By: Chris L - 10/1/2008
Best Answer - Chosen by Asker
If the motor is attempting to draw an amp and a half, you certainly aren't doing transistor with a collector current rating of 200mA a whole lot of good. It's sort of the same theory as shorting out a battery. While you're not guaranteed that it's going to leak or explode, you are still trying to draw more current... More
Answered By: Adam F - 10/3/2008
Additional Answers (1)
Why would you use a transistor rated at 200ma in a 1.5 amp load? You are lucky it didn't blow out! I'd have to see the circuit to understand why. The transistor probably still has some gain at higher currents, and that is what is making the motor move. you want help? get a properly rated transistor!! .
Answered By: billrussell42 - 10/1/2008
Over 483 Local Jobs Now Hiring In Your Area. $18-$87/Hr - Apply Today!
Work at Home Jobs Make $389/Day. Jobs Seen on TV. Jobs Hiring Now.
Work at Home Jobs Make $729/Day. Jobs Seen on CNN. Jobs Hiring Now.
$37-$47/hr Real Work at home Jobs (Requirements: Must Have Computer)
Other Career Questions
What jobs are there in the business field that are night jobs? Places and job titles please. Im have a BA in Business Admin and looking for a night job, already have a morning/day job.
Enumerate these jobs Say, patent application writting. patent application writing. In a company, what jobs are needed to keep confidential?
Content is not owned or controlled by Monster. Any content concerns should be addressed with Yahoo!
Yahoo! Does not evaluate or guarantee the accuracy of any Yahoo! Answers content. Yahoo! Disclaimer.
Best-Paying Work-from-Home Jobs
It’s easier than ever to work from home. Of course, not every job is a mobile job, and some companies aren’t interested in having their employees work from home.
2013 Marketing Jobs Outlook
The US may be facing another year of anemic hiring overall, but that won't be the case in the high-orbit world of multichannel, digital media marketing.
2013 Engineering Jobs Outlook
Engineers will find job opportunities in select disciplines in 2013, with candidates who are all-around, client-oriented businesspeople in demand.
Best-Paying Jobs by Major
What could you earn with a particular four-year degree? Find out by checking out this list of the top-paying jobs for 20 of the most common majors.
Eight High-Paying, Secure Jobs
Want to earn a good salary and enjoy a measure of job security as well? Check out these well-paying jobs on tap for fast growth in the coming years.