Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [components]

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.

0
votes
0answers
23 views

DAC1282 vs AD5791BRUZ [on hold]

I was looking for high resolution DACs for a project. Off the top of my head, I knew that Analog Devices had the highest resolution instrumentation DAC, AD5791BRUZ, with resolution of 20 bits. But ...
0
votes
0answers
38 views

Spark gap schematic symbol help

I disassembled a Sharp 42" LCD TV power supply board and discovered 3 glass Spark Gap components (Gas Discharge Tube/Surge Absorbers). I haven't worked with them before and I'm curious about the ...
2
votes
1answer
109 views

Are there any electrical components which may keep electricity inside them after the device is turned off?

Is there any electrical component where electricity may remain after a device is turned off?
1
vote
0answers
88 views

Soviet Russia components need identifying

I have a KO D-8e Soviet engine which was made somewhere between the 60s and the 90s is USSR. I'm trying to bring it to life and need to find what are those 2 dead components in series. They have no ...
1
vote
2answers
87 views

Why there is no a variable-frequency crystal oscillator?

Quartz crystal oscillators have better frequency stability than tuned circuits of capacitors and inductors. However, they are used only as components with a fixed resonant frequency. Variable-...
0
votes
1answer
80 views

How to measure this component

I want to know how to measure this components in the attached picture. If I'm right they are beads. The second one the brown one I thought at first that it is a capacitor but I can't measure its ...
2
votes
7answers
4k views

What is this SMD component, marked as D7 with an underline?

I'm trying to identify the SMD component (marked as D7 with an underline) on a circuit board of an ARGB LED controller. I think it is a diode or resistor, but I'm not sure about it. Please can I get ...
-1
votes
4answers
149 views

what is the triangle component in electronics?

From the following image we can see 3 triangle symbols: looking to the triangle to the right i suppose it is a voltage buffer, but the ones at the left have 2 inputs. What are they? This image is ...
2
votes
2answers
180 views

What is this component? Marked R5

Edited: Added more pictures. I'm reverse engineering a PCB but I'm stuck at one component. I can't find out what it is. I thought it is a diode because of the marking on top of it but when I test it ...
0
votes
0answers
44 views

Is this an antenna connector?

I have seen 3 connectors in the image ABOVE in my 4G hotspot's motherboard, what are they ? I know these are not GPS because no need of GPS in a 4G hotspot. All of the 3 connectors are facing downward ...
0
votes
1answer
84 views

Does anyone know what these marine radio pot/switches are or what they do?

I enjoy re-purposing misc items and components to make neat gadgets etc. I have salvaged these two "switches" from an old marine radio. The rods on each click in and click out and rotate in both ...
-1
votes
1answer
108 views

What is this white component? [duplicate]

Anybody knows what this component is? (The white cylinder.) It has to be some kind of switch since it is marked as "S2", but I never saw anything like it before. Thanks!
1
vote
0answers
37 views

Piezo Transducer - Constant weight increases sensitivity, why?

I currently have a piezoelectric transducer connected up to an Arduino in the following arrangement The piezo is normally not very sensitive, unless I tap my finger directly on the sensor, or knock ...
1
vote
3answers
110 views

Identify unknown capacitor and resistor values

How can I find out what the values of R12 and C3 are?
2
votes
2answers
73 views

Help Identifying what this component is

A friend of mine asked me if I could identify a component that keeps causing the flow of current to stop in a 12 V 1 motor system he has increased to 2 motors (perhaps due to overload or heat). He ...
1
vote
2answers
45 views

I couldn't find the flow sensor datasheet

I want to know whether it is working.I want to know the VCC GND and the data terminals.what do I have to do to get 300mV out of here?
4
votes
0answers
153 views

How to identify SMD device marked LEFBV?

I have a SOT23-3 component marked \$\underline{\textrm{L}}\,\underline{\textrm{E}}\,\overline{\textrm{F}}\,\overline{\textrm{B}}\,\textrm{V}\$ as shown in the following images: The following ...
0
votes
1answer
93 views

What are the main characteristics of high reactive power RF capacitors?

This question is related to this one. I have to design a high quality factor RF parallel resonant circuit, to be placed in parallel to the output of a medium to high power RF generator. Precisely, ...
0
votes
1answer
127 views

How do I know which component this is?

It says 100J and is much bigger than the other components. It has a resistance of 2ohm when the circuit is without power, and 15 ohm when I attach power to the circuit. It has a 1nf capacitance. So ...
0
votes
0answers
57 views

Interchangeable resistor

I have a PCB board where I am measuring the voltage drop across a resistor which is placed on the Vdd path of a small micro-controller. I would like to have a method for easily interchange the ...
2
votes
1answer
82 views

Identifying SMD component 22P W8

I've been trying to identify a component on a main board for a TV that I believe to be faulty. As I haven't been able to come up with anything that I feel confident about, I'm hoping to get some ...
9
votes
2answers
1k views

Could the terminal length of components like resistors be reduced? [closed]

When breadboarding the length of the wires on resistors (through-hole) is quite comfortable. The same holds for other components like diodes or capacitors. I presume the terminal length was made to ...
0
votes
1answer
78 views

Query regarding unknown component

Hi guys I'm very new to this field and I'm having a problem with my sound devices 664 recorder. There's a faulty component and it needs to be replaced. I couldn't find the component here in the local ...
1
vote
2answers
116 views

What is the name of this component

I am a graduate Aerospace Engineering student. I need to wire a pneumatic actuator's controller and a magnetic position sensor for a small part of my research. I received a connection diagram from the ...
0
votes
2answers
45 views

EAGLE Names not showing up on board after footprint update

I added the >NAME attribute to the footprint of a device and now the names are not shown on the board. I have already tried to update the library (with library --> update all) and also the replace ...
1
vote
0answers
34 views

Can't find replacement for switch

I am trying to repair a nespresso machine(not a job, just for fun) and the PCB had the following switch: I tried to google it as "switch", "switch 4 pin", "1552", but nothing returned a switch ...
0
votes
1answer
57 views

What is the most efficient way to increase the frequency of a waveform?

More specifically, I have an electric induction kettle. From what I understand, it heats the water by sending a high frequency (voltage?) signal around ~24kHz. This high frequency signal causes a ...
0
votes
1answer
36 views

Components appelation

I found a component in a circuit called DNP0603, I have searched in the net and I did not find an explanation to that, does any one knows what it stands for ??
2
votes
1answer
548 views

Suction cup with a 1/4" TS cable?

I found this weird component at a resale store. I feel like it is some sort of pick up, but I'm not sure. Lots of things could have a quarter inch TS cable coming out of it and there are no markings ...
0
votes
1answer
68 views

What is the reason that moving iron instrument can measure both AC and DC but moving coil instrument can't?

What is the reason that moving iron instrument could measure both AC and DC but moving coil instrument can't? ( moving coil can't respond quickly as the AC changes its direction so stays at zero - is ...
0
votes
1answer
106 views

Is this a 4R9 resistor or somthing else?

After a power-peak due to a broken main electricity cable, me and my neigbours got some broken devices. At our house only my motor cycle trickle chargers were connected. And all 3 got broken :(. ...
4
votes
1answer
124 views

Why is this component that looks like a capacitor with ground lines in this circuit diagram different from a polarized capacitor? [duplicate]

What is the component that is represented with two horizontal lines like a capacitor with three Ground Chassis lines connecting them and a + at the top and a 10μ label. See picture below (top right ...
0
votes
1answer
95 views

What voltage rating does the resistor in this circuit need to be? [closed]

In this circuit: the load is protected from transient voltage spikes by the MOV, which clamps at 1kV. If the circuit experiences a 6kV spike on the mains supply, will the resistor get hit with 6kV, ...
3
votes
2answers
97 views

What is this green component from a camera flash unit?

I recently opened up an old camera. I tore it down to its flash unit. I saw this green component and I'm not sure what exactly it is. It also has a small rod which fits inside the hole. When I ...
0
votes
1answer
116 views

Identifying unusual three terminal component

I was desoldering some components from a board and found this three terminal device I have no idea what it is. The labels on the PCB were F1, F2,... which is usually reserved for fuses, but I've never ...
0
votes
2answers
138 views

Need help identifying replacement components on PCB

I have outdoor speaker that has leaked over the years and now the passive crossover inside has become corroded and the tweeters no longer work. This is a dual voice coil speaker, so it takes both ...
0
votes
2answers
70 views

Identifying this component adapter/socket

I'm sorting an old collection of electronic components, some of which I don't know what they are used for, like this one: This component is about 7 mm wide. Does anyone recognize this? Thanks in ...
0
votes
1answer
52 views

How to look for a good quality 11mm rotary encoder?

The rotary encoder attached to the wheel of my dear logitech MX1000 started glitching a few weeks ago. I took it out, tried cleaning it the best I could but it was still bad. So I went shopping ...
0
votes
0answers
31 views

Descriptions for electronic and electro-mechanical components

Does anyone know of a standard or guide for the creation of descriptions for electronic and electro-mechanical components?
1
vote
0answers
49 views

Can anybody identify this SiTel IC

I am trying to identify an IC in order to repair a circuit board. Here is a photo of the IC in question: For reference, the markings on it are: ...
0
votes
1answer
41 views

Replacement part for MAX407 op amp [closed]

Electronics noob here. I need to find a replacement part for a MAX407. I am assembling this circuit and the shop I'm buying from doesn't have the MAX407 op amp in stock. Since I don't understand all ...
0
votes
1answer
54 views

Identify part orientation

I have a part that looks like this under my microscope: and it is a TPS22810 load switch (datasheet). But, how do I know which side is which?
0
votes
1answer
71 views

Need help to identify a three lead passive component

Here's a picture of a damaged component salvaged from an old spectrum analyzer. The number on the component reads 226K & 253, which I presumed it as dual tantalum capacitors ( with three leads) of ...
0
votes
2answers
225 views

Identifying this smd component

A beginner in electronics, I have gone into an attempt in fixing an LCD screen (Lacie 324i) that wasn't switching on. I have found that it was due to a small capacitor that was dead at the level of ...
0
votes
1answer
61 views

Replacing a charged capacitor with suitable components to form equivalent circuit

If we have an initially charged capacitor (say 5V) and capacitance C, in a circuit, can we replace it with a constant voltage source of 5V and an uncharged capacitor with same capacitance C, both in ...
0
votes
2answers
108 views

Anyone know the name of this type of switch?

Does anyone know the name of the internal switch (circled in red) in this assembly? It is a latching switch, so much to close and then push again to open. I've been Googling and hunting for about 2 ...
1
vote
3answers
119 views

Switching 240VAC 1A max from 5VDC

I'm planning a device that can switch a 240VAC 1A current - most likely 0.5A but it's nice to have the head room. A relay seems the most obvious choice but given the low current it seems over the top ...
0
votes
1answer
115 views

Is this LED cover a commercial product?

I am trying to build a fork sensor. While I am OK at electronics stuff, for the first time in my life I took active role in making a finished product. Looking at our competitors designs, I noticed a ...
11
votes
4answers
4k views

How do I identify this component? It just says 0 on it [duplicate]

Can anyone help me identify this component? It just says 0 or D on it (I think it's a zero). I tested it for conductivity with a multimeter - doesn't seem to have any (tried both polarities in case it'...
0
votes
2answers
101 views

What is this thing called

I used to use this thing to setup variable load to my AC output. It is a smoothly variable resistor, Just slide, and resistance vary smoothly unlike Decade Resistors.. But I cannot remember the exact ...