Questions tagged [terminal]
A "terminal" or "terminus" means the "end"s of a circuit component (wires, resistors, capacitors, ICs, etc.). According to their shapes, termini are known as lead, leg, screw, pin, plug, probe, contacts, etc. On a terminus we apply electrical connectors.
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With modern connectors, is the metal shell used as a conductor?
Does the metal shell of a connector, such as USB and HDMI, serve a conducting purpose? The metal shell of my TV's HDMI terminal is corroded. Should I make effort to have it contacting and conducting ...
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Molex PicoBlade current rating confusing
It seems there are confliction in specifications of PicoBlade for current rating.
From the MolexPicoBlade Connector System datasheet,
I assume that the current values in table is per circuit value.
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Molten plastic or resin over jumper terminals
I have a number of sensor boards on which I need to close two jumper connectors with solder. On the second board, my iron was not sufficiently hot and I made a mess of it. I've since replaced the iron....
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What does internal resistance of the battery do to the battery as it ages?
I'm charging a 4.2V Li-po battery using a battery charger.
I understand that all batteries have some internal resistance.
My question is what does it actually do to the battery as the battery ages?
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Screw terminal damaged in input 230 V three-phase power supply
I use screw terminals for a 230 VAC three-phase power supply, but it blasts in many PCBs, so I want to replace it. What would be a better solution?
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Three-phase motor 380 V wiring
I have a motor with this connection. I find it a bit strange that it has two terminals. I think it is a two-speed three-phase motor.
Which diagram from the paper is being used in the connection and ...
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Fixing traverse on Guldmann GH2 (old title: Measuring EMF and terminal voltage with multiple batteries)
Suppose we have two 12V batteries as our source voltage. How can the EMF and terminal voltage be measured when using one 12V battery versus both batteries? Since terminal voltage deals with a closed ...
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Why do some transistor packages have multiple leads for the emitter?
I want to use a BJT transistor (edit: BFU768F, https://www.nxp.com/docs/en/data-sheet/BFU768F.pdf) that looks like this:
I think I get why lead 1 is bigger than the rest. It's because both collector ...
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What does the 'C' marking on this battery indicate?
As the title says, what does the 'C' marking mean? I first figured it may be the terminal that outputs temperature data but I'm not sure. I wanted to build a custom solar charger for this battery and ...
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Correct connection to F3 type battery terminals
Looking for deep-cycle lead acid batteries, I come across several models which feature what they call an "F3" type terminal, like this:
Basically a vertical metal tab with a hole in it. I ...
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How to protect measurement equipment channels from ESD?
I was wondering what is the best way to protect measurement equipment, when handling like oscilloscopes/spectrum analyzers/Vnas/sensitive circuits (especially when stored in (none esd) foam)?
I was ...
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What is the terminal on the photo?
Does any one know what is the name of terminal on the photo? Or what is the kind of the shown connectors, not necessarily the exact one?
I tried sharpening the image and reading off the name but no ...
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How do you check if a terminal is compatible with a connector?
In example, if I was looking for a terminal for this type of connector. I'm looking through terminals but I don't really know how to make sure they'll be a fit for each other. In a general way, how do ...
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Can I pass DC 36V 100A through a terminal block that is rated for DC 300V 30A?
In the system that I am designing, the peak current that the system requires is 80A at 36V DC. The terminal blocks that are available on the market are rated for 300V 30A. I want to know if the ...
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Unknown Terminals - Sourcing
Does anyone have any info on the terminals shown in the photo below? I believe they are an old Siemens design, but I don't have a proper name to try to source these. There are no markings or numbers ...
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Which crimp terminal is crimped correctly?
I've loaded the crimp terminal two different ways in my crimper, but I haven't the experience to say which is correct.
Cursory web research doesn't seem to answer the question.
Edit: this is the first ...
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What manufacturer is this contact?
I have a relay contact, that I am trying to identify. It is from an Audi, who mostly use TE/Tyco, but this is different. It has this marking on it:
Which I have tried to replicate here for clarity:
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What is this wire connector/terminal called?
Could you please tell me the name of the red wire connector/terminal shown in the picture?
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What kind of terminal block is this?
I've perused a few resources (linked below) trying to learn more about this strip / block, but they mostly have side views / cross sections. I just want to know what the things in this picture are ...
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Identifying PCB based Connectors
I am trying to identify the type/class of connectors that similar to PCB straight type connectors that you see in RAM modules, PCIe Cards.
I have this custom board for which I am trying to identify ...
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What are the 9V battery terminal size specifications?
I'm trying to find the dimensions of a 9V (PP3?) battery (no specific chemistry). For some reason it's giving me a lot of trouble. I've been able to find most of the information (I checked a bunch of ...
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Open circuit fault detection using an Arduino
I was able to implement short circuit fault detection of under ground cables and I was also able to add a GSM module(SIM900D) with it.
I'm trying to further enhance my project by detecting open ...
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Analogue signal issue? [closed]
I have an issue with a analogue signal. Your help would be greatly appreciated.
The signal is a 5Vdc, it is an output from a PCB which is a source to many A/D PCB. its output is connected using wire ...
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Converting an electrical schematic into a physical panel layout
I'm an undergrad researching physics, my job has been to make this electrical schematic, can I get some help figuring out the physical layout?
I've basically self-taught myself enough of solidworks ...
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MDB Protocol - Communication between a PC and a payment terminal
I'm working on a project where I need to create a communication channel between a standard PC (running Windows) and a payment terminal (a NFC credit card reader, an Ingenico iUC 180B). I'm a junior ...
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How can I terminate a wire passing 32A
I have a cable with 3 X 10 AWG stranded conductors, L1, L2 and Earth. This cable will need to pass 32 amps of continuous current for 24+ hours at a time. I have this contactor:
As you can see, the ...
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Female terminal pin
What is this female terminal pin called, Everywhere I look I can only find slightly similar ones, but no matches, Even a reverse Google Image search pulls up some weird alternatives
The only ones I ...
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How do you call wire pins that can be used as jumpers with your breadboard?
I can't seem to find these things on electronics distributor websites. There is a bunch of various pins and connectors but I can't find these among them. What are they called? I tried "dupont 2.54mm ...
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Disassembling pre-assembled JST Rectangular Plug PHR-4 (0.079")
I'm going to purchase pre-assembled 4-Position Cable Assembly CABLE-PH04 with standard PHR-4 JST connector housing [0.079" (2.00mm) pitch].
The PHR-4 JST connector plug will be connected to mating 4-...
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Wire connectors for Back of Push to Exit Button
The connection terminals on the back of these Request to Exit buttons seem to resemble what I can guess is a "compression lugs". Not really sure what they are called and I'm not familiar with general ...
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Looking For a Specific Connector [closed]
I'm designing a single layer Aluminum PCB and all components needs to be SMD/SMT. I'm looking for a common connector that will deliver DC power at 24V and up to 5A minimum (10A ideally). Right now, I'...
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What are these female 2.54mm (0.1") crimp terminals?
So I but some crimping terminals to make my own custom cable connections for the first time today for an Arduino project I'm currently working on.
Comparing to some older ones I have from premade ...
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What is a terminal plane in high frequency circuits?
The term "terminal planes" come up very frequently in books on microwave circuits. What exactly does the term mean?
The closest answer I have got is
A terminal plane, or reference plane, is the ...
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Why are there 2 connectors on li-ion batteries
I'm looking at just about any assembled li-ion battery pack for sale and they all have 2 connectors coming out (4 wires total) and I'm wondering why is that?
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Can I trust in visual inspection to identify LED terminals?
In the figure above, LED A is a regular 5mm LED and the visual identification of its terminals polarity is well known.
As you can see, on LED B the anode is identified by the longer leg, but the ...
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AC to terminal block relays
How can I use one power cable to connect to 4 relays in parallel?
So for example, I have one power cable and I want to turn on 3 radiators out for 4.
This is my screenshot of the circuit.
Terminal ...
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Why MOSFETs in Battery Management System are connected to negative terminal?
I have seen that the MOSFETs and current shunt resistors are connected to the negative terminals of the battery or the BMS. Is there any specific reason for this? Why aren't they connected to the ...
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Calculating Joint (Load in lbs or Kn) requirement for a compression lug on top of a bus bar
I have found myself in an interesting scenario that is actually more mechanical in nature but maybe you guys can point me in the right direction.
I am having a hard time finding any ISO, IEC, or ANSI ...
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What is the reference/name of this connector?
I would like to know the name/reference of this connector:
This is for 2.5mm² max wire
When you push the orange button, it unleash the wire
Thank you
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When I checking the hot terminal in the socket, multimeter shows the current through me?
I set my multimeter in AC voltage measurement, connected + wire of multimeter to the hot terminal of the electrical socket, and take - wire in my hand. Now it measures the voltage. This procedure ...
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Is it possible to implement a serial console via GDB?
Is it possible to send debugging messages from MCU to PC over SWD via GDB without interrupting the running code (ie. without using breakpoints), like we could do via UART of MCU by sacrificing 2 UART ...
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How to find the right connector?
I have gotten the task of finding an appropriate connector for our application, but given so much information there is on connectors, I don't even know which information is relevant.
So this is the ...
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Type of terminal/connector to use for CAN bus on Arduino MKR CAN Shield
Probably, this is obvious to everyone, but since I am a newbie to electrical engineering I am stuck. I have two wires of a CAN bus, (CANL and CANH), and I wish to connect them to the Arduino MKR CAN ...
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What style of semi-permanent power connector for vibrating environment?
With the only constraint being that the connection is "easily" removable (e.g. not soldered, but common tools are fine), what style of power connectors work best for vibrating environments?
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What is the PCB name of this speaker connector?
I am designing a PCB board in EasyEDA for a DIY audio amp. I have searched in several places to find the proper technical name of this speaker connector but I could not find it.
I searched in Mouser ...
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Does battery wear depend more on EMF voltage (capacity) or terminal voltage? (charging full slowly vs. charging fast)
Let's say there are two identical Lithium-Ion batteries. (is it any different for Ni-MH batteries?)
One gets charged at 0.1C until the EMF voltage (which is capacity-dependent) reaches 4.3V.
The ...
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What type of terminal is this
Okay, simple yet seemingly impossible question here... What type of terminal is this? It looks like exactly what we need, but I found the image on an advert for the shrink-wrap shown in the picture. ...
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Need to identify this pin / terminal
I need to identify this pin so I can order more.
RESEARCH: I've pored over Molex.com, Allied Electronics, and here with no success. I also reached out to JST and Allied directly but they were unable ...
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identify this connector - faston housing
need MFG of this connector. It is not tyco event though there are tyco fastons installed (confirmed by Tyco).
2 position faston housing. tab locks are on facing outwards.
no markings on connector
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Unconnected Inverting terminal of op-amp to hold a steady voltage?
I recently completed my final for my first year electrical Engineering Subject and I have the image of the question above.
I was really confused because it says when both switches are open, which ...