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IR Leds - all broken OR how to test them
valusoft wrote: Well providing you do not exceed the 100mA maximum current, I don't see how you could be destroying these. With a 5 volt supply and 60 ohms series resistor (do I...
Tuesday, 4 August 2015 - 12:53
IR Leds - all broken OR how to test them
Hi Ross, currently about 15 or so of them died. All of them pretty bog standard. I am resisting the urge to give up on them and switch to a new supply.   Diode Case Style: T...
Tuesday, 4 August 2015 - 08:36
IR Leds - all broken OR how to test them
The handheld remote thing seems a nice twist. May try that one if I find a remote.   I am fully aware of the IR being visible on camera trick, but I still can't figure out...
Tuesday, 4 August 2015 - 08:17
IR Leds - all broken OR how to test them
Ah, if the led itself is shortcircuited, it might light the circuit, so if my checking led is on, the IR might still be bad. However, if the checking light is OFF the Ir certainly...
Monday, 3 August 2015 - 21:24
IR Leds - all broken OR how to test them
I don't understand, why is that a short circuit?   And how would I measure with a multimeter and resistor, just measure the voltage?
Monday, 3 August 2015 - 10:54
IR Leds - all broken OR how to test them
Okay, I build this circuit, with a transistor and 1K ohm resistor to test the led. My logic is, if the led is ok, it will drive the transistor and the regular led will light up,...
Monday, 3 August 2015 - 09:30
IR Leds - all broken OR how to test them
If the IR led is working, ie, conducting, then when the IR Led is present, the regular led will turn on. I am not trying to detect if it's transmitting, just if it's 'on' or off....
Sunday, 2 August 2015 - 21:34
IR Leds - all broken OR how to test them
Still, I find it hard to believe that all my IR's are burned out. I also tried measuring them with the multimeter, I don't know what I am doing wrong.  Use a 330 ohm resistor...
Sunday, 2 August 2015 - 20:52
Generating a 38KHz carrier wave for IR
Ok, that's enough of a vote of confidence for me. I am going to wire/solder up a more permanent version of this thing and then start the build on a receiver. Tx.
Wednesday, 29 July 2015 - 09:47
Generating a 38KHz carrier wave for IR
Yeah, that was my bad, I referenced the relevant resistor incorrectly in my post, it's about R3, not R1.  But overall, after all is said and done, is this is an a valid and...
Tuesday, 28 July 2015 - 13:59
Generating a 38KHz carrier wave for IR
So, like this;  
Tuesday, 28 July 2015 - 13:54
Generating a 38KHz carrier wave for IR
Okay, I understood that. Lucky me didn't hook that up yet, it was part of an improvement I was planning. So no smoke yet. But, I understood that for a rapidly flashing led a cap...
Tuesday, 28 July 2015 - 13:40

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