Components are the most basic elements in an electronic circuit. Characteristic is that they're in a single package. There are passive and active components, from as simple as a zero -ohm resistor to as complex as a multi-billion transistor IC.
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0answers
49 views
Need to know what this component is
An nVidia PNY Quadro 4000 landed in my lap, this graphics card is messed up - no video out, but the green LED on it indicates that it has power, the fan spins, windows even recognizes it (with an ...
4
votes
6answers
171 views
Identifying piece of circuitry on a PCB
I haven't done electronics for a long time but am doing some for a hobby project this weekend. I'm looking for some help breaking down/analyzing a circuit board I want to modify/hack:
It's for 3 ...
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0answers
50 views
Is there any place to get old electronics components from thrown away equipment? [closed]
Every year quite many electronic and electrical appliances are thrown away. Can't someone do a bit of work and take out the LCD screens from printers, their motors, power supplies e.t.c and sell it. I ...
0
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3answers
99 views
A device that wirelessly, securely posts to a server in response to door opening: off the shelf or custom-make?
I am looking for an off the shelf component for a project I am currently working on. Due to the nature of the project I cannot go into much detail about the project itself, only give a high level ...
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1answer
58 views
Camera component for taking still images? [closed]
I am working with some friends on a project that needs to have an camera that takes photos, but we are needing to source just the sensor, with built in lens. One such solution I found was:
...
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1answer
172 views
What is this strange component from 1950 radio reciever
A while ago I took apart my grandpa's really old radio receiver with vacuum tubes. I recognize everything except for this one strange component. It seems to have some sort of heat sink on the outside ...
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0answers
45 views
Part recommendation for cheapest 1.8V H-bridge or half bridge [closed]
I'm working on a project to control a small brushed DC motor (3V, 0.15A), and trying to make the board as cheap as possible (by necessity =/). Can you help me find the part(s) to drive the motor?
The ...
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0answers
68 views
What does DIN mean in DIN Rail Terminal Block? [closed]
Is DIN a company name or some standard?
I googled it, but I could not find an answer. Thanks
2
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1answer
56 views
What does 3AG mean in “Fuse Block 3AG”?
I have read from a vendor website. It mentions 3AG fuse block. What does 3AG mean?
0
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0answers
66 views
How to sum or calculate voltage or current harmonics component that are in parallel ?
Recently I measured voltage and current harmonics in coal mining industry. But they only have Power Quality Meter with limited current clamps (not big enough for the PCC(point of common coupling)). So ...
0
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0answers
35 views
Are there off-the-shelf sources for high-frequency high-current magnetics?
I'm often looking for high-frequency chokes. My typical spec ranges are 500-1000 volts, 10-40 kHz, 5-200 amps. Off-the-shelf chokes in that range are almost non-existent from what I've seen. The ...
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votes
1answer
82 views
What component/device to use for a front-eye display
I need to display information in front of my eyes, just like Google Glass, but in this case, it has to fill a bigger field of view (is it the good term?). I have already thought about a couple ways to ...
2
votes
2answers
104 views
Please help with Identifying my diode?
I am having trouble identifying this component. I think its a diode. But I am not sure since I hardly know much about electronic components.
The Component says "22-16 U2" and then has a symbol on it.
...
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2answers
84 views
Capacitors in RFID reader
I'm trying to understand a schematic of an RFID reader.
Circuit:
What capacitors are used - electrolytic or ceramic capacitors?
I've seen schemes of RFID readers that use electrolytic capacitors, ...
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votes
1answer
90 views
Please Help me identify this PT 1K ohm resistor's (Packaging)
Please refer to the attached Images.
Dimensions:
Hieght and Breadth: 42mm
Thickness: 25mm
I know its PT 1k Ohm resistor(Positive Temperature Coefficient) and its two connecting wires are ...
3
votes
1answer
92 views
Looking for identification of an electrical component
Kind of an odd source I'm referencing, but I'm looking for the identification of an electrical part in a video game item. Here are two pictures (screenshots of the 3d model), where I've circled the ...
4
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1answer
74 views
Does the line on a zener diode correspond with the line in the symbol?
For a normal diode, the thin line on the component corresponds with the line of the symbol. Is this the same for a zener diode?
3
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2answers
137 views
How to mathematically determine the frequency of a tone based on components being used
My REAL question is how to choose the right components if you want a specific frequency spit out from a 555. In my particular case I want a potentiometer to control an output frequency from 16Hz to ...
2
votes
1answer
119 views
Eagle PCB design Libraries?
I am doing my first Eagle PCB design. It's been going smoothly so far, however, I just hit a road bump. I am using a TC1269 Regulator, but cannot find the CAD library for it. I have looked into ...
1
vote
2answers
122 views
What are all the components used in this sketch?
I am trying my hand at electronics. Here's the sketch of a device I'd like to build that I found online. It's for a coil gun. I just don't know enough to understand the full sketch.
I've been ...
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votes
3answers
117 views
RF transceiver WITHOUT built-in modulation [closed]
I'm trying to find an RF front-end module for a simple data transmission system of 500 bps.
Since I'm testing different encryptions, I want to modulate the signal, encrypt it, and then transmit it. ...
0
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0answers
137 views
where can I buy standalone smartphone camera modules?
Question 1: I'm planning on hacking together a little proof-of-concept device using a pared-down Google Nexus 7 tablet as the base. I'd like to connect a higher resolution camera where the current ...
0
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1answer
69 views
Power Jack connection switch pin?
I was looking at a this CUI power jack connector and I noticed that it has a switch which is NC, and I think goes open when a connector is plugged in (pin 2/3).
There's no clear distinction I can ...
1
vote
1answer
129 views
Please help to identify SOT23-5 packaged “T1-R17”
Picture of good component:
Picture of bad component:
These are photos of identical twins. The first is in perfect health, the other burned up and rendered the Sony VAIO PCG-8111L laptop in came ...
4
votes
3answers
174 views
What is this component, and how can I use it?
Please see the attached photograph of the component:
My guess is that it is a solenoid, but I am not sure. If it is a solenoid, I would really like to use it. The problem, however, is that I do not ...
4
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3answers
359 views
What does this schematic symbol mean?
I'm trying to understand what the following symbol is for. It's found in this schematic.
0
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1answer
184 views
How to understand this label on part?
From the label on thermostat I can read the following, but can't decode it to understand the max current.
CAMPINI Ty 95
C1-16(3)/250~
C2-6(1)/250~
Does ...
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1answer
154 views
Identifying rotary encoder
I need help with identifying connection scheme of this rotary encoder. I have no datasheet and there is nothing specified on the body except "CTR".
1
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4answers
196 views
Microcontroller with rotary encoder and bluetooth capabilities [closed]
I am looking for advice on (what to use/how to make) a rotary encoder that I can connect to through bluetooth. I am writing an app that needs to display on screen in real time to the user the number ...
0
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1answer
86 views
Can I change the input voltage for this temperature-controlled fan circuit:? [duplicate]
Possible Duplicate:
Can this temperature-controlled fan circuit be modified for different input voltage?
For the above temperature-controlled fan control circuit which is originally ...
3
votes
1answer
67 views
Question regarding fuses
What is the difference between thermal fuse and MOV and polyfuse.Which is faster and also which companies produce polyfuse, especially in Asia.
I have to search for a component that can save my ...
2
votes
2answers
140 views
“Giant Pixel”, low-energy component?
I'm really not sure if this is the best place to ask this, but I'm working on a project that requires a sort of 'giant pixel' of sorts, maybe about 4"x4", that can either be dark or light, and can ...
0
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1answer
116 views
Component Identification
Can anyone identify the black IC component for me please?
I have tried to find it I have no idea what it is, it is on the PCB for a piezo.
Full Image
2
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2answers
218 views
Can this temperature-controlled fan circuit be modified for different input voltage?
I want to know if this same circuit can be used for 220 or 230 volt input, and if there are any components that need to be modified. C3 has 600V capacity and C1 and C2 have 250 volt.
Link to ...
4
votes
2answers
131 views
Ethernet Without a Switch?
How do you wire up Ethernet electrically without a switch? An approximately equivalent phrasing of this question would be what is going on electrically inside an Ethernet Hub?
To clarify, I'm not ...
5
votes
1answer
160 views
How to find a replacement for an antiquated transistor 2N2148
I need to replace a transistor in my guitar amplifier. The model number listed on the original schematic is 2N2148. It is in a TO3 package and the rest of the specs are listed here.
I am having ...
2
votes
4answers
226 views
Why does conventional electricity flow out of + in a battery, but out of - in components?
It seems like when electricity flows out of + in a battery it should be attracted by a - end of a component, but it's not like that. Why?
3
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1answer
73 views
Is there a solution for keeping circuits with low frequencies small?
background
I'm essentially making an mixed-signal/analog computer(to accelerate certain mathematical operations). I'm looking to create many AC filters (of different types) at low frequencies (sub ...
5
votes
2answers
104 views
How to search for a component?
Whenever I start a new project, one of the first things I must do is search for suitable components to see if the project is feasible. Most of my projects are desperately space constrained, so I don't ...
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0answers
136 views
3G Antenna for arduino Equivalent?
I am looking for a US equivalent for this antenna External GPRS-GSM-UMTS Antenna
which I know is 3G compatible with this 3G/GPRS Shield for arduino
I'd like to not lose any potential capabilities of ...
2
votes
0answers
108 views
View physical size before placing component, DipTrace
Is there a way to view the physical size of a component before it is placed in the schematic editor in DipTrace, like it's shown in Eagle?
I like to use DipTrace because it seem to have a nice ...
2
votes
5answers
91 views
device for outputting HIGH when input have been HIGH?
I am looking for a device or circuit that outputs HIGH when a pushbutton has been pressed (if the button is pressed again it is supposed to still output HIGH), also, if possible, another pushbutton ...
3
votes
2answers
214 views
What's the difference between linear and audio tapers, and why should I care?
I'm stocking up on a variety of potentiometers to keep on hand for my audio projects, and I'm trying to figure out what to buy.
The projects I'm working on seen to call for either linear & audio ...
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votes
1answer
82 views
SMD Trimpot specs - some cite in K/M and others in uH
Was searching for SMD trimpots at a popular online component site, and noticed that the search results were showing trimpots (s.a. from Bourns) some of whose 1-line specs read like they were variable ...
2
votes
1answer
161 views
rotary switch / turn knob? how to call it?
Im looking for a switch-like rotary knob, that i can turn left and right. Its outputs a simple 'pulse'. You find these in selecting/setting numbers on assorted electronics. You can keep turning them ...
1
vote
1answer
122 views
Automating button presses
I'm working on a project which involves automating the pressing of some buttons on a device. There are five push buttons, which are quite stiff and require fast repetitive presses - around about ~7Hz ...
0
votes
1answer
80 views
Lower the voltage
I need to lower the voltage of this 12v battery to power this board, what parts do I need?
Sorry, for more naive questions just another programmer =)
5
votes
3answers
177 views
An idea for well-aligned component placement during PCB assembly
(Note: This question is in particular for low-volume self/manual assembly, i.e., without automatic pick and place machine).
Generally, stencils are used for well-aligned application of solder paste ...
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1answer
188 views
Indetifying burnt components [closed]
I have been far from electronics lately, but a related problem has appeared at work and I had to take a look.
So: somebody screwed up and burnt input components of two devices: an expensive ...
1
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2answers
75 views
What part/actuator do you think they used
At around 2:20 in this video there is an interesting use of electronics. You can watch the video but in short there are these little spoon creatures that pop out from behind a covering. The speed at ...
