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What is this black thing next to the capacitor??? is it an LDR? Answered

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amando96
amando96

Answer 10 years ago

hmm never thought of that... maybe it is... but then where is the IR receiver? :O

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Sandisk1duo
Sandisk1duo

Answer 10 years ago

never mind my dumb idea, i clicked the first picture and it looked silver to me that should be a IR receiver does it have any markings on it? or on the circuit board

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amando96
amando96

Answer 10 years ago

no markings at all, or i would have searched them on google... thats why it's being hard to indentify it...

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Sandisk1duo
Sandisk1duo

Answer 10 years ago

probably IR

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amando96
amando96

Answer 10 years ago

yea IR something, not transistor though coz they detect veriations of light or something like that... anyways made an IR proximity detector with it ha

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amando96
amando96

Answer 10 years ago

yea... but like IR what? lol transistor, resistor... something else... :O

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Sandisk1duo
Sandisk1duo

Answer 10 years ago

a resistor that changes it's resistance when Infra Red light is shined on it

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Sandisk1duo
Sandisk1duo

Answer 10 years ago

dude, i don't like spam :( just tell those people on the forum about instructables.. much easier post a forum topic on your website

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ste5442
ste5442

Answer 10 years ago

It is more than likely the IR receiver.
The device has two pins, one called the 'collector' and one called the 'emitter' I suspect. Connect a voltmeter across the two pins and point the IR transmitter (the remote) at the sensor. You should see the voltage flick between 'something' (depending on the supply voltage) and a few hundred mV as the transistor turns on and off.
The chances are that there is some modulation happening so you probably need a scope to see the changes - a DMM (and your eyes!) would be too slow to see the changes!

Hope this helps!

PCBPolice Electronics Forum - we need some users....please!

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amando96
amando96

Answer 10 years ago

ya will do thanks!
and ermmmm whats a DMM? lol =/

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UziMonkey
UziMonkey

10 years ago

Probably not. It's probably some IR receiver IC. It having only two pins would be a big clue here, as most things in this TO-style package have three pins.

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amando96
amando96

Answer 10 years ago

Just did that, the voltage(or something) defenantly changes when an IR light is shined on it... so i guess it is... lol

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amando96
amando96

Answer 10 years ago

ya i forgot about that, so that normal light cant interfeere with the IR signals...

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UziMonkey
UziMonkey

Answer 10 years ago

Info is good, SPAM is not..