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Subject: 
Re: IR output driver
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Sat, 26 Aug 2000 11:29:37 GMT
Viewed: 
3824 times
  
it's rated for 1 amp.  so you'd have no trouble at all with what you
describe below.

fred

In your message you said:
> 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
> 



Message is in Reply To:
  IR output driver
 
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 (...) (26 years ago, 24-Aug-00, to lugnet.robotics.handyboard)

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