Subject:
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IR output driver
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 24 Aug 2000 10:14:33 GMT
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Original-From:
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John Hatton <john.hatton@uk.airsysatm[spamcake].thomson-csf.com>
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Viewed:
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1165 times
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Does any one know how much current the ZTX614 NPN Darlington transistor
(Q1 - IR output driver) can handle. I am wondering whether I can use
this to driver a total of 5 IR leds, either in parallel or series. The
indicator led circuitry that goes in parallel to the ir output uses a
1Kohm resistor with one of the 2mA leds so I am assuming that if I use 5
x 1K resistors (one for each output) to drive the leds at 2mA (approx)
the overall current going through the transistor should be about 12mA.
Could someone clarify this.
Thanks
John Hatton
johnhatton@email.com
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Message has 2 Replies:
 | | RE: IR output driver
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| Hi! Zetex has a great tech page where all of the specs are listed: www.zetex.com It will have the beta values... Kent | -----Original Message----- | From: jhatton@media.mit.edu [mailto:jhatton@medi...mit.edu]On Behalf Of | John Hatton | Sent: (...) (24 years ago, 24-Aug-00, to lugnet.robotics.handyboard)
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