Questions tagged [specifications]

Specifications for an electronic component provide the basis for parametric part selection for operation or optimum performance of a circuit or to prevent damage to integral or connected circuit components.

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7
votes
2answers
11k views

Transformer labeled 120v-60hz-35va-12v - What exactly does it do?

I have a pool light whose bulb physically broke, but I've found a way to open the water-tight bulb enclosure to get at the actual bulb. I'm trying to either hunt down a replacement bulb (rather than ...
7
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1answer
2k views

Why are 5 mm LEDs always rated at 20mA?

OK, maybe not all of them, but by far most of the 5 mm LEDs I've ever handled are rated with I(max) = 20 mA and I've been using them for maybe over 15 years. Why is this? Is caused by the size of the ...
3
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2answers
2k views

What type of LED lights are needed for detecting retro-reflective markers for motion capture project?

I've a project in which I want to add 10-12 led lights around webcam's lens so that the camera can detect retro-reflective tape in it's viewing area. How this process works is something like this. I'...
5
votes
2answers
1k views

Unknown motor, specifications interpretation and use

I got a motor on the picture. Does anyone know what it was used for? My main question is if is it feasible to use it as a barbecue motor or is it too strong? Can I connect it to one or three phases ...
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2answers
3k views

SPI specifications

I need to program (in Verilog) a peripheral driver connected to an FPGA through 4 standard SPI pins. I have been trying to find an authoritative source that clearly specifies the timing diagrams for ...
10
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5answers
13k views

Why is power consumption sometimes given in mA and not in units of Watts?

Why is power consumption sometimes given in mA and not in units of Watts? For example, consider the following statement: "A USB device specifies its power consumption expressed in 2mA units in the ...
2
votes
2answers
606 views

Suggestions for DC/DC converters with digital control

I am under quite some time pressure and I need to put together a document about how several DC/DC converters (preferably buck) with digital control compare to each other. I am pretty clueless, I have ...
5
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2answers
3k views

Hart protocol implementation

I would like to implement the HART protocol and am searching for specifications of the protocol. I found that the Hart Communication Foundation manages the protocol and on this page it says that ...
0
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1answer
180 views

What pressure can 'normal' consumer-packaged chip withstand?

I thought I'd be able find this easily via google, but apparently not, so: What pressure can 'normal' consumer-packaged chip withstand? (To give a specific example, say the OMAP4430) I'm presuming ...
7
votes
1answer
195 views

Whence this difference in supply current?

When I need a MAX809 I prefer the OnSemi part over those from Maxim or NXP because the former has a much lower supply current. But I was looking at the NXP datasheet again recently, and I noticed that ...

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