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.

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103 views

What kind of diode package/case is “case-17”?

The Russian company asked me to purchase several elements for the production of the device. Among the elements in the BOM there were two "5 watts" zener diodes 1N5342B at 6.8 Volts 1N5349B at 12 ...
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25 views

Altium how to remove 'ghost' ActiveBoM manufacturer link

While creating manufacturer links for a part in ActiveBoM I added the wrong part to the entry. Normally it's straight forward to remove either with right click or ...
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70 views

I need help to identify a SMD component

I want to identify a SMD component of a Nubia Z9 MAX board (NX512JMB) In the next picture you can see the red square. A 4 PIN SMD component (or 2 PIN component, I don't know). The green square I ...
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157 views

Does anyone know what this component could be?

I am currently working on an already fully assembled PCB. I want to get into Hardware Reverse Engineering and my first step would be to identify all important components. I found most of the ...
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2answers
136 views

Is there an easy way to find out if my 0805 SMD components are ferrite beads?

I ordered SMD 0805 components among other items and I received a package with the SMD components but there is no description at all. Also, there is no identification on the components itself. Is ...
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75 views

What do these capacitor markings mean?

Aluminum Organic Polymer Capacitor So to be really honest, I did blow an capacitor a while back by applying the wrong voltage to it, and had ever since then trying to decode this info to track down an ...
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3answers
122 views

I need help reading resistors

I've been using the Arduino starter kit recently, and for a project I require a 10 thousand ohm resistor. The kit comes with a belt of different resistors, and It has some 10k resistors but I've been ...
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53 views

Correct procedure to identify a component and obtain the datasheet

I'm not sure what should be the correct procedure to obtain a component's datasheet starting from the component's package code. I searched in the other questions, but I found mostly people asking ...
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1answer
38 views

Is the value of the inductor important in chua's circuit?

In Kennedy 92, the author gives a worked example of Chua's circuit experiment. The circuit diagram is given below: The author (in section 7.1) discuss how the value of each component might be chosen, ...
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80 views

What will happen if I use a voltmeter instead of an oscilloscope in a Chua's circuit?

Suppose I use a voltmeter instead of an oscilloscope in chua's circuit. Voltmeters only measure the average voltage over a short time period. Questions (please consider both DC and AC voltmeter, ...
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63 views

What components would I need to build a basic circuit that completes when something is pulled with a certain amount of force?

As an example, a rope tied to a tree when pulled with Y newtons would illuminate an LED but wouldn't when only pulled with X newtons. I guess what I'm looking for is a basic force meter.
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38 views

Can't identify this component from a Lancer Monitoring System DW101E

I'm trying to reverse engineer this system to try to read an adressable transducer. In this amp op configuration I don't know what this yellow component is supposed to do. The component label is: ...
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141 views

Identification of two components

Can you help me identify these two components? I cannot find information on them on the web. They appear to be ceramic filters of some kind. Front of Component 1: Back of Component 1: Front of ...
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34 views

Component identification: 1600A NH & FBH5AA FDMP & W10B 89F

Can't find the component by it number, they look like FETs on a fan PCB but need datasheet.
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150 views

What is this audio-related component?

This component looks like a speaker and attracts iron towards its center. The numbers here lead me nowhere; the company is some audio-related company. Shows a resistance 145 ohms.
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2answers
73 views

What is the difference between “SMD/SMT” and “Straight” about Mounting Direction?

I'm looking for a tactile switch for mounting on a PCB. I use Mouser to find them. https://www.mouser.jp/Electromechanical/Switches/Tactile-Switches/_/N-5g2m?P=1z0z7pt In that page, there is ...
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1answer
68 views

Bridge wire for soldering

I saw in a video that the person was using something he called bridge wire to solder a pcb with. I was wondering what kind if wire is used as a bridge to do the connection between components? Here ...
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1answer
165 views

What are these hybrids from National Semiconductor?

I found some parts in my junk drawer that I can't identify. I'm pretty sure they're National Semiconductor hybrid circuits from 1969-1970, but I have no access to a National Hybrid Products databook. ...
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58 views

How to find the right (external) ADC for an Arduino project?

there is a specific project I am trying to tackle using an Arduino, but I'm fairly new to this topic, which is why I would appreciate your help on choosing the right components and overall circuit. I ...
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35 views

Component that measures plastic bottle wall thickness?

I am on my senior year in college taking electronics engineering and currently working on a project that is a trash bin only taking in plastic bottles and giving incentives to the user depending on ...
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55 views

Smd Component identification

I was creating schematic from a pcb but could not understand what the component in the image is for. The name written on the component is L386. At first i thought that it is a voltage regulator like ...
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45 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 ...
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1answer
110 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?
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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 ...
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110 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-...
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1answer
81 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 ...
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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 ...
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4answers
165 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 ...
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2answers
189 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 ...
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1answer
98 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 ...
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1answer
109 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!
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38 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 ...
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3answers
118 views

Identify unknown capacitor and resistor values

How can I find out what the values of R12 and C3 are?
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2answers
74 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 ...
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2answers
46 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?
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172 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 ...
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1answer
103 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, ...
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1answer
131 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 ...
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60 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 ...
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1answer
101 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 ...
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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 ...
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1answer
80 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 ...
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118 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 ...
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2answers
71 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 ...
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0answers
35 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 ...
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1answer
65 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 ...
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1answer
37 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 ??
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1answer
779 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 ...
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1answer
77 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 ...
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109 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 :(. ...