Author Topic: What's this please? (Component Advice) (Read 1294319 times)

orbiter · « **on:** March 06, 2011, 12:21:48 pm »

Hi fellas,

First off... Anybody think it might be a good thing to have a 'What's This Please..' as a sticky thread, and if so, could we have one please? Only because I've seen a few people (including myself) needing to know what particular parts are.

Ok now to my question.. What's This please..

I'm assuming it's some sort of photodiode or something, but I've had a quick search on around on the datasheet sites looking for the displayed numbers, but I can't see anything that matches.

Thanks guys

cybergibbons · « **Reply #1 on:** March 06, 2011, 12:32:30 pm »

Looks like an IR remote receiver.

mikeselectricstuff · « **Reply #2 on:** March 06, 2011, 12:32:51 pm »

It's an infra-red receiver for remote controls, by Sharp I think. It demodulates the 36-ish khz carrier to give an easily decoded datastream. There are many simiular devices (e.g. Vishay TSOP range), sho shouldn;t be hard to find data

orbiter · « **Reply #3 on:** March 06, 2011, 12:39:45 pm »

Ah ok, thanks guys. That gives me something to go on.

Cheers

orb

Sionyn · « **Reply #4 on:** March 06, 2011, 03:58:53 pm »

Mechatrommer · « **Reply #5 on:** March 06, 2011, 03:59:14 pm »

Quote from: orbiter on March 06, 2011, 12:21:48 pm

First off... Anybody think it might be a good thing to have a 'What's This..' thread, and if so, could we have one please?

i agree, and it should be made sticky. how about this thread? just suggestion.

armandas · « **Reply #6 on:** March 06, 2011, 11:16:38 pm »

Oh! Oh! May I?

The hand drawn part is the rough copy of the silk screen that was under the component. Basically a zigzag in a rectangle. Probably some power component, but I have never seen the symbol, so no idea.

EDIT: added a picture with a ruler. It's about 10mm wide.

dengorius · « **Reply #7 on:** March 07, 2011, 02:09:00 am »

It looks like some kind of thermistor to me, maybe a NTC? Have you tried to measure its resistance

Hypernova · « **Reply #8 on:** March 07, 2011, 06:20:11 am »

At that size probably a NTC thermister for inrush current protection.

ElektroQuark · « **Reply #9 on:** March 07, 2011, 07:52:19 am »

Semitec 10D210 Thermistor, NTC, 10 Ohm, 3A

armandas · « **Reply #10 on:** March 07, 2011, 08:50:33 am »

Nice one, guys. It is indeed an NTC, measures about 12R when cold. Thanks!

orbiter · « **Reply #11 on:** March 09, 2011, 05:00:34 pm »

Any chance of the 'What's this please?' sticky thread.. please mods?

Simon · « **Reply #12 on:** March 09, 2011, 07:32:29 pm »

There you go it is now a sticky. It will eventually become a very long topic though but I expect something to trwl through when you have an "unknown" and "some time"

orbiter · « **Reply #13 on:** March 09, 2011, 07:55:36 pm »

Great. Thanks Simon

NiHaoMike · « **Reply #14 on:** March 10, 2011, 08:31:28 pm »

In every CRT monitor or TV I have taken apart, there was this odd inductor that has a permanent magnet glued to it. Is that to offset the magnetic field generated by a DC bias current so a cheaper core can be used?

Time · « **Reply #15 on:** March 10, 2011, 10:38:32 pm »

Quote from: NiHaoMike on March 10, 2011, 08:31:28 pm

In every CRT monitor or TV I have taken apart, there was this odd inductor that has a permanent magnet glued to it. Is that to offset the magnetic field generated by a DC bias current so a cheaper core can be used?

My guess would be to minimize the overall field of the inductor since a CRT is sensitive to B fields.

david77 · « **Reply #16 on:** March 10, 2011, 10:59:22 pm »

I've also got something I'm seeking information on. I'm pretty sure I know what they are but I'd be interested in some more info on these op amps.

jahonen · « **Reply #17 on:** March 11, 2011, 08:05:01 am »

Quote from: Time on March 10, 2011, 10:38:32 pm

Quote from: NiHaoMike on March 10, 2011, 08:31:28 pm
In every CRT monitor or TV I have taken apart, there was this odd inductor that has a permanent magnet glued to it. Is that to offset the magnetic field generated by a DC bias current so a cheaper core can be used?

My guess would be to minimize the overall field of the inductor since a CRT is sensitive to B fields.

I think it is horizontal linearity or "s-correction" coil.

Regards,
Janne

apex · « **Reply #18 on:** March 12, 2011, 01:21:59 pm »

@david77:
They look like early operational amplifiers.
The function on the pins is printed on it, so why don't give it a try and see if it works?
Don't expect too much amplification factor!

apex

Zero999 · « **Reply #19 on:** March 12, 2011, 05:27:23 pm »

Quote from: NiHaoMike on March 10, 2011, 08:31:28 pm

In every CRT monitor or TV I have taken apart, there was this odd inductor that has a permanent magnet glued to it. Is that to offset the magnetic field generated by a DC bias current so a cheaper core can be used?

Yes, that's what it's for, the permanent magnet biases the inductor to oppose the DC current so a smaller, cheaper core can be used.

Mechatrommer · « **Reply #20 on:** March 15, 2011, 04:44:08 pm »

pls help!

1) white (ceramic like) rectangle with 5W0.1ohmJ on it?
2) yellow (plastic like) rectangle with .1uF (K) X2 etc etc on it? if its capacitor, what type and why its yellow plastic rectangle?
3) the green round coin shape with DN R, 20 D471K on it, polyswitch right? the NTC?

NiHaoMike · « **Reply #21 on:** March 15, 2011, 05:02:51 pm »

First one is a resistor.
Second one is indeed a capacitor.
Third one is a NTC.

Mechatrommer · « **Reply #22 on:** March 15, 2011, 05:09:49 pm »

thanx. but why the unit is ohmJ? and my question about the yellow rectangle plastic?

Simon · « **Reply #23 on:** March 15, 2011, 05:24:05 pm »

I think "J" is an abreviation of tolerance, 5% I think

Fryguy · « **Reply #24 on:** March 15, 2011, 05:51:08 pm »

1) it's a simple 0,1 ohm 5W resistor - just ignore the J - i always do

2) is a X2-class 0,1µF mains filter capacitor - a flat foil capacitor in a yellow plastic block body - that's just the way it is - an X2 is designed to withstand a voltage peak of 2500V and it won't burn in case of an overload .


EEVblog Main Site	EEVblog on Youtube	EEVblog on Twitter	EEVblog on Facebook	EEVblog on Odysee

Author Topic: What's this please? (Component Advice) (Read 1294319 times)

Share me