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.

learn more… | top users | synonyms (2)

0
votes
0answers
16 views

How do I specify a parameter for a specific component in LTSpice?

I have a schematic which uses two center-tapped transformers. I found that I can specify the ratio between the two sides of the transformer by adding the directive ".param ratioT=0.3". Now that I ...
0
votes
1answer
91 views

Where can I find a transistor similar to a 2n 3904?

I have what I believe is a 2N 3904 638 transistor. It measures 50MΩ at around 70°F. How can I find a data sheet on this? How would I go about finding a similar / replacement thermistor? PS: ...
4
votes
4answers
86 views

Export restrictions when sourcing parts for PCB assembly in foreign country

If a company has a PCB design and wishes to assemble them economically, a natural choice is China. Some Chinese companies are asking for the parts (or some of them) to be shipped to them. This means ...
0
votes
3answers
78 views

Is there some kind of jumper for banana plugs?

I have a three-phase cable harness (low voltage) for connecting to a motor. I have it connectorized so I can easily plug/unplug the motor. I would like to insert a short inline cable so I can measure ...
0
votes
0answers
9 views

What's off topic? [migrated]

I read this, (from a post cancelled for being off topic.) "Questions seeking recommendations for specific products or places to purchase them are off-topic as they are rarely useful to others and ...
3
votes
1answer
59 views

Component usage in this constant-current source circuit

In the April 2014 edition of Elektor magazine, they present a circuit for a high-precision current source device (page 42). It allows the user to select a constant-current between 10nA and 20mA. They ...
1
vote
0answers
40 views

FM tuner/receiver chip with RDS and good audio quality?

I want to rebuild from scratch an old radio and put some modern technology in it. I want to put large (17x5cm) LCD instead of analog scale inside receiver like this: (image from audiofilek.pl) ...
0
votes
1answer
42 views

CX-20 Quadcopter Part

One of the ESC's on my quadcopter is missing a component. I am unsure what this component does or where to find a new part. Is it a sort of resistor?? What size? it features no markings that I can ...
12
votes
2answers
1k views

Why is there copper on the side of this package?

I'm searching around digi-key when I noticed one of the MEMS oscillators has these copper pieces on the edge of the package: I'm not talking about the pads, I'm just talking about those little ...
0
votes
2answers
48 views

Does “open source hardware” only apply to controllers or to all components?

I'm new to the hardware world and am coming from a software background, and am trying to build a small device to attach to my PC via USB. I've heard the term "open source hardware" in reference to ...
0
votes
1answer
116 views

Most lumens per watt

I recently started designing a pcb for flashing lights I want to use in a pavillon at festivals, garden parties and the like. Now my question is, can anyone tell me which kind of LED that has the ...
-2
votes
2answers
116 views

Why do TI (Texas Instruments) graphing calculators not use TI chips? [closed]

Most semiconductor manufacturers seem particular about using their own products when possible. For example, the Analog Devices Blackfin development board uses another Blackfin processor for the JTAG ...
2
votes
3answers
557 views

What is this AC source?

Below is a part of a schematic and I would like to understand each part of it. What I think is happening: This is being fed a 48V AC source These leads are a source and a ground? I'm not sure ...
-5
votes
2answers
80 views

What all do I need to salvage parts from gaming devices (not for profit) [closed]

I have a few projects I want to get started on (not for patent: only for me) I wanted to know what types of tools I need to get some components and other salvageable parts from things like a PS2 ...
0
votes
1answer
44 views

For two clocked components in series, how do you ensure that the output of the first is captured by the second?

I'm working through the open Nand to Tetris course offered by Nissan and Schoken. I've just finished chapter 5, where we construct a 16-bit computer using a hardware description language and an ...
1
vote
2answers
134 views

Suggestions for Ternary Computer Parts

I am thinking of creating a ternary computer from scratch, mostly as a hobby project, are there any parts out there that I could use? Or would I have to create them from scratch? If so, what would be ...
0
votes
1answer
82 views

What are these components in these circuits?

I have seen a documentary about making BGM-71 TOW (an anti-tank missile - the Iranians make it). You can see it in this link (part 1). I have seen two odd components. In your opinion, what are these ...
6
votes
4answers
1k views

Are more expensive parts worth it?

The prices of components of supposedly the same type and with the same parameters vary strongly between manufacturers. Assuming my use does not come close to the absolute maximum ratings, is it worth ...
0
votes
1answer
108 views

What are these parts? (better photos)

I have salvaged some parts that I can't identify myself. I would appreciate it if someone could tell me what they are called so I can look them up. I took some better photos of the first 3 parts, and ...
0
votes
0answers
35 views

Measure the current on shunt basis

I am trying to measure high current 15A to 20A 1000V. There are two ways of doing it: using hall sensor, that can interface directly to micro controller using shunt resistor based. I need ...
1
vote
3answers
130 views

Ways to connect a PCIe/PCIe2 card and other PC parts to a breadboard?

Basically I have a bunch of rather old computer parts that I haven't been able to get rid of so I decided to do a few experiments with them but for that I need to be able to breadboard them. Things ...
-5
votes
2answers
85 views

2.1 speaker volume controller circuit problem [closed]

I dont know how to connect 4 wires coming out of speaker to the 3.5mm jack whick only has 3 wires in it.... I don't need volume controller. I just want to fix it so that it could work as a stereo ...
1
vote
0answers
61 views

Meaning of + and - in an electronic component's part number

I have search in the internet and I could not really get an answer for this question. "What does \$\mathbf{+}\$ and \$\mathbf{-}\$ mean in an electronic component's part number?"
2
votes
1answer
146 views

Identify this component on a DYP-ME007Y ultrasonic sensor

I'm working with the DYP-ME007Y ultrasonic sensor for a project and I bought two off eBay. Both seem to work however they have this 'unknown' twistable part which is in a different position of ...
0
votes
1answer
52 views

Are phone cameras interchangeable [closed]

I was wondering what determines the availability of a phone to support a camera? and if lets say I have an 8MP camera from one phone manufacturer with the same number of pins that would connect to ...
0
votes
2answers
109 views

Eagle library for MCP2551

I need to make a PCB, and the only software I have is EAGLE. All the other parts are listed in my libraries, but where can I find a library that has MCP2551 (CAN transceiver)?
0
votes
1answer
60 views

SMD Code Parts BE P04 & AE P04

I'm looking to find out what these parts are on a PLC controller. Both are SOT-89 packages. The AE P04 I suspect maybe something to do with a constant current circuit for +24vDC for a 4-20mA loop ...
0
votes
1answer
113 views

Going from Breadboard to PERMANENT circuit but have Arduino shields attached?

I have made an Arduino project that uses a shield. I am now trying to turn it into a permanent circuit. I have flashed the microcontroller with the program, and I have all the parts I need to solder ...
3
votes
0answers
108 views

I need to create a planar inductor with a specific value of 28 nH on a 4-layer PCB. How do I determine the proper trace geometry?

I am using a Linear Technologies LT-1534 part an need to create a planar PCB surface inductor with the specific value of 28nH; i.e., the inductor will be a copper trace on the PC boards Top Surface to ...
2
votes
1answer
70 views

Gas Tubes: neutralization of space-charge causes drop in tube resistance? Deionizing voltage re-combination?

The following paragraph is from Chapter 3 of the book Principles of Electronics. When cathode is heated, it emits a large number of electrons. These electrons form a cloud of electrons near ...
4
votes
2answers
625 views

How to tell if an electronic component is counterfeit?

I've been looking into sites (like Alibaba, etc...) for components, but they are usually at the price of the rain. How can someone know if a company or factory is not a scam and that those components ...
1
vote
0answers
95 views

What is this component and what is its use?

I found this in CRT TV on the CRT tube driver PCB. What are they used for and what is their schematic symbol?
0
votes
1answer
83 views

Measure length tape dispenser

I've got an m1000 tape dispenser which is already an automated tape dispenser for industrial usage. The problem is that I can't get enough grip between my shaft en and tape to get the precise length ...
1
vote
1answer
72 views

How to find SMT equivalents of TH parts?

A lot of times hobbyist circuits are designed with thru-hole components since they're easier to solder. What approach do you take when attempting to find the SMT equivalent of a TH part? For example, ...
1
vote
0answers
25 views

Eagle: IC package variant, different pins bonded out

I'm trying to create an Eagle component for the Altera EP4CE22, which comes in BGA and SMD packages, where different pins are actually available on the outside of the package. Is it possible to reuse ...
-1
votes
2answers
144 views

Do any commercially available generic circuits use only discrete components? [closed]

I'm currently toying with embarking upon a totally crazy hobby project, which would prohibit the use of any component that cannot be 100% verified manually: obviously this completely rules out all ...
0
votes
0answers
58 views

What are these ICs: XLJ9021B and M713

Found on a microcontroller board from a CRT monitor. The microcontroller is HD6433256P. It has 2kb RAM and masked ROM, but it can be used in extended mode with external ROM. I want to know especially ...
0
votes
2answers
76 views

Sourcing parts with standard geometry

I am designing a prototype for a unit that may go into production (not for profit organization). For some of the parts, geometry will be important. I need a power jack, a two wire fan connector, a ...
1
vote
3answers
198 views

Is Isopropyl Alcohol 70% a good choice for cleaning electrical wires

I need some wires inside my phone cleaned. And the only alcohol I can find is 70%. Is it safe to clean electrical wires with it? Or would that be too much water?
1
vote
1answer
49 views

What is this part? A958 960L [closed]

I have an optimus STAV 3200 (radioshack parts link) and this component labeled A958 960L blew itself in two taking a resistor with it. The parts list does not specify what the component is or what I ...
1
vote
2answers
118 views

What parts can I use to make 110V DC from 4 D-size alkaline or NiMH batteries?

I need help with choosing DC/DC converter parts. I want to build D-size battery powered lantern working with typical E14 or E27 compact fluorescent lamps. Here is my awesome idea :) It will be ...
0
votes
1answer
78 views

Help to identify part

I'm trying to repair a broken baby monitor and found an interesting looking part. It looks like an thermocouple but I'm not sure. Do you have any ideas? See board picture.
2
votes
1answer
77 views

Product Price Question

At our company, we are in the process of finishing to develop a toy prototype. I need to estimate the "production" price of all the components. I was able to gather all the price from every ...
0
votes
1answer
80 views

LTspice: How to convert .asc file to netlist?

Using LTspice I can create .asc files which contain the information about my circuit. Is there a way to convert this information to a netlist? I am looking for a ...
5
votes
1answer
991 views

How do filament LED bulbs work, looking very similar to incandescent bulbs?

Filament LED bulbs use very narrow strips containing the LED, which look similar to filaments of an old incandescent bulb. Here's a good picture: http://www.aruana-led.de/ They look like a normal ...
0
votes
1answer
77 views

interface component for screwing to make electric contact

Is there a component that allows you to stack two PCB on top of each other and screw them together to make electric contact? Thanks!
4
votes
4answers
785 views

What is the name of this “plastic wire loop”?

Someone told me that it is called wire loop. I want to buy it, but I could not find it using wire loop as keyword
0
votes
1answer
70 views

Code on capacitors

I accidentally let the magic smoke out of two (tantalum?) capacitors, one on an Arduino-based board and one on an RF reciever. Apparently they don't like being hooked up backwards. :-) For the ...
3
votes
2answers
326 views

What is this component (probably a shock/vibration sensor)?

The other day I received a promotional wrist band from a convention booth -- it has two LEDs that flash when you jostle it. I removed the guts to see how it works, and here is what I found: Most of ...
1
vote
1answer
81 views

What type of transformer is this?

I have a design project for my electrical engineering class where I'm designing a signal tracer akin to Tripplett's Fox and Hound series. For a reference, I tested the output of a commercial tone ...