Author Topic: What's this please? (Component Advice) (Read 1284284 times)

PA0PBZ · « **Reply #475 on:** February 23, 2014, 02:45:22 pm »

A fuse, NMFZ007-2R5X-K , 2.5A 24V

fluxcapacitor · « **Reply #476 on:** February 23, 2014, 03:06:47 pm »

PA0PBZ bet me to it. I found a similar schematic for a JVC GZ-HD3 that has the same fuses .

http://diagramas.diagramasde.com/camaras/JVC%20Camcorder%20GZ-HD3%20-%20Diagrama%20Esquematico.pdf (page 21)

NMFZ007-2R5X-K

romantronixlab · « **Reply #477 on:** February 23, 2014, 03:37:02 pm »

Quote from: PA0PBZ on February 23, 2014, 02:45:22 pm

A fuse, NMFZ007-2R5X-K , 2.5A 24V

Is that a 0603, still learning the size aspect of smd
Don't know how much thanks to give so thanks

AndersAnd · « **Reply #478 on:** February 23, 2014, 07:00:55 pm »

Quote from: romantronixlab on February 23, 2014, 03:37:02 pm

Is that a 0603, still learning the size aspect of smd

Hard to tell from a picture, but I think it's 0805 and the 4 parts to the left of the fuses being 0603 and the 0 ohm resistor marked '000' being 1206.

But if you're in doubt, just measure the length and width with a ruler or even better a calliper.
Here's all the standard SMD resistor dimensions in mm:

The dimensions are also shown on Dave's µRuler: http://www.eevblog.com/projects/uruler/

But you don't have to work with SMD's for long before you learn to easily tell the difference between the most common sizes like 1206, 0805 and 0603 just by looking at them.

mathsquid · « **Reply #479 on:** February 23, 2014, 10:00:22 pm »

Do any of you chaps recognize the logo on the pot in this picture? I'd like to buy 5 of them to overhaul my microkorg synthesizer, but the only supplier I've found sells them for $6 each. I'm hoping I find another source for them.

Thanks.

fluxcapacitor · « **Reply #480 on:** February 23, 2014, 10:40:31 pm »

They`re made by bourns .

http://uk.mouser.com/ProductDetail/Bourns/PTV111-3420A-B103/?qs=nqw9FAyaR8OFhofgARComA==

PTV111-3420A-B103

http://www.muffwiggler.com/forum/viewtopic.php?t=80651&sid=b4bbb00148a1c0a0b6ad5b40a0d6ba54

mathsquid · « **Reply #481 on:** February 24, 2014, 12:48:31 am »

Thanks!!

rakesh · « **Reply #482 on:** February 25, 2014, 11:14:06 am »

I bought a used fluke 189 multimeter from a seller https://www.eevblog.com/forum/Smileys/default/smiliey_dmm.gif . He gave me a set of probes which don't fit in any of the jacks of fluke 189 . I was wondering does anybody know what kind of probes are these and can it be used with this meter. All the probes are marked fluke on them.

sorry for the picture quality.

aroby · « **Reply #483 on:** March 22, 2014, 11:51:04 pm »

I have two burned out SMD components I need to replace. One is a diode, the other (I think) is a transistor. It's hard to make out the markings, but the board has others with similar markings, so I am going to assume these are the same. I'm not familiar with how to decode the markings and then do a mouser or digikey search for these.

The diode looks like it says A4 with a sideways E or 3. The transistor says 7CW with a sideways 83. Can someone point me in the right direction ?

Thanks

Anthony

ablacon64 · « **Reply #484 on:** March 23, 2014, 12:01:52 am »

I guess...
7CW: http://www.nxp.com/documents/data_sheet/MMBT2222A.pdf
A4: http://www.nxp.com/documents/data_sheet/BAV70_SER.pdf

firewalker · « **Reply #485 on:** April 09, 2014, 09:58:40 am »

Any info on this sensor? I believe it is an analog air sub-pressure sensor from an car engine air intake.

Alexander.

fluxcapacitor · « **Reply #486 on:** April 10, 2014, 12:09:17 am »

i found a few that are similar .No info on the pcb or part numbers .

http://www.hoperf.com/sensor/barometer_16/HP03M.htm

http://www.ebay.com/itm/10pcs-lot-Pressure-sensor-Pressure-sensor-700KPa-/121246383906?pt=Battery_Chargers&hash=item1c3ad8ff22

http://www.apollounion.com/en/p-MS5201-SMD-Pressure-Sensor-356.html

firewalker · « **Reply #487 on:** April 10, 2014, 06:00:37 am »

Thanks you!

Alexander.

128er · « **Reply #488 on:** April 10, 2014, 10:30:17 pm »

This thing is out of an old 70's military radio device. The marking is "LCC 4K7". Its simply a short in both directions, no semiconductor, no capacitance...

It was built in a shielding can, like the drawing

Could it be, that it is only for a proper penetration of shielding cans to carry out/in a signal?

gibbled · « **Reply #489 on:** April 10, 2014, 11:04:20 pm »

Perhaps a feedthrough cap.

fluxcapacitor · « **Reply #490 on:** April 11, 2014, 12:18:46 am »

i thin its a pass through cap or bulkhead connector.

LukeW · « **Reply #491 on:** April 11, 2014, 01:18:02 am »

Definitely a feedthough capacitor, or maybe just an environmentally-resistant but still removable and serviceable feedthrough into a closed box.

128er · « **Reply #492 on:** April 11, 2014, 01:45:13 am »

Sometimes my brain starts to clatter - and, ah, a few of the modules i have kept. There marked as C's with "4700" on it. But the two i have seperate, are definitely shorted. No capacitance in every respect. I will try to measure the things in the module.

vk6zgo · « **Reply #493 on:** April 11, 2014, 02:27:34 am »

The capacitance is between the centre lead & the outer threaded case.
It is a convenient way to bypass a lead which has to pass through a metal panel.

128er · « **Reply #494 on:** April 11, 2014, 02:47:23 am »

D'oh! Silly me. Excuse my stupidity. I think I got it

AndersAnd · « **Reply #495 on:** April 11, 2014, 07:33:04 am »

http://www.analog.com/static/imported-files/rarely_asked_questions/moreInfo_raq_filters4Switchers.html

Fig 11. Feedthrough capacitor and feedthrough pi filter.
These prevent HF signals from entering or leaving screened enclosures via power or signal lines.

OSIDbarlow · « **Reply #496 on:** April 15, 2014, 09:17:02 am »

Quote from: edwardcurrentclamps on November 03, 2013, 12:16:14 am

Thanks,

any idea where I get something like that? I also wondered, how are you so sure. In what kind of application have you seen something like that before?

Thanks

These devices are used in position sensing applications, such as for laser guided weaponry or encoded machine systems (like scanning galvanometers for lasers). The position of the incident light source is calculated by determining the input current differential between the 4 segments - if the current output is equal from all 4 segments, you are in the direct centre (so for a laser guided missile it is hitting the target). I can help you with sourcing these devices. Email me for details.

Alexei.Polkhanov · « **Reply #497 on:** April 16, 2014, 06:00:37 am »

Quote from: OSIDbarlow on April 15, 2014, 09:17:02 am

These devices are used in position sensing applications, such as for laser guided weaponry or encoded machine systems (like scanning galvanometers for lasers). The position of the incident light source is calculated by determining the input current differential between the 4 segments - if the current output is equal from all 4 segments, you are in the direct centre (so for a laser guided missile it is hitting the target). I can help you with sourcing these devices. Email me for details.

So that is a quadrant photodiode like this one from Digikey: http://www.digikey.ca/product-detail/en/SXUVPS4C/958-1018-ND/4047472.
I was looking for cheaper version of one like this without any luck.

SeanB · « **Reply #498 on:** April 17, 2014, 08:05:40 pm »

A cheap one is available in every CD player optical block.

128er · « **Reply #499 on:** April 20, 2014, 12:16:51 am »

It's me again

Please name that connector type. Its on a Wandel & Goltermann PDH/SDH Transmission-/Jitteranalyzer.

Thanks!


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Author Topic: What's this please? (Component Advice) (Read 1284284 times)

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