Questions tagged [terminal]

A "terminal" or "terminus" means the "end"s of a circuit-component (wires, resistors, capacitors, ICs etc). According to shapes , termini known as lead, leg, screw, pin, plug, probe,contacts etc. On terminus we apply electrical connectors.

Filter by
Sorted by
Tagged with
0 votes
1 answer
51 views

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 ...
user avatar
1 vote
0 answers
39 views

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 ...
user avatar
  • 117
1 vote
1 answer
106 views

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 ...
user avatar
1 vote
1 answer
51 views

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 ...
user avatar
  • 23
4 votes
2 answers
1k views

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 ...
user avatar
0 votes
0 answers
53 views

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 ...
user avatar
  • 1
3 votes
1 answer
131 views

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 ...
user avatar
0 votes
2 answers
129 views

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: ...
user avatar
10 votes
2 answers
2k views

What is this wire connector/terminal called?

Could you please tell me the name of the red wire connector/terminal shown in the picture?
user avatar
  • 109
2 votes
2 answers
270 views

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 ...
user avatar
  • 155
0 votes
0 answers
80 views

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 ...
user avatar
8 votes
1 answer
747 views

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 ...
user avatar
  • 554
0 votes
0 answers
367 views

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 ...
user avatar
3 votes
0 answers
52 views

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 ...
user avatar
2 votes
1 answer
288 views

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 ...
user avatar
  • 21
1 vote
0 answers
260 views

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 ...
user avatar
  • 11
2 votes
1 answer
91 views

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 ...
user avatar
1 vote
1 answer
125 views

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 ...
user avatar
0 votes
3 answers
82 views

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 ...
user avatar
  • 103
0 votes
1 answer
79 views

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-...
user avatar
  • 171
0 votes
1 answer
42 views

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 ...
user avatar
  • 103
0 votes
1 answer
59 views

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'...
user avatar
  • 445
0 votes
2 answers
112 views

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 ...
user avatar
2 votes
2 answers
163 views

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 ...
user avatar
  • 227
-2 votes
2 answers
2k views

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?
user avatar
2 votes
2 answers
383 views

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 ...
user avatar
  • 466
0 votes
0 answers
43 views

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 ...
user avatar
  • 137
0 votes
1 answer
607 views

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 ...
user avatar
0 votes
1 answer
36 views

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 ...
user avatar
  • 35
0 votes
1 answer
127 views

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
user avatar
  • 311
0 votes
1 answer
92 views

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 ...
user avatar
0 votes
1 answer
118 views

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 ...
user avatar
  • 1,204
3 votes
0 answers
231 views

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 ...
user avatar
1 vote
1 answer
157 views

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 ...
user avatar
  • 143
0 votes
0 answers
33 views

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? ...
user avatar
1 vote
1 answer
389 views

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 ...
user avatar
-1 votes
1 answer
71 views

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 ...
user avatar
3 votes
3 answers
161 views

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. ...
user avatar
0 votes
2 answers
226 views

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 ...
user avatar
1 vote
1 answer
111 views

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 ...
user avatar
  • 11
0 votes
1 answer
135 views

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 ...
user avatar
0 votes
3 answers
2k views

Find Voltage between two terminals

I have the circuit below and I need to find the voltage between the terminals A and B, which steps do I need to follow? And if there are several methods to do so, what are they?
user avatar
12 votes
1 answer
3k views

Why do some toggle switches have terminals of different color?

I sometimes see three terminal rocker/toggle switches, and one terminal is a different color than the other two. Here is an example: (Image from ebay.com) What does the colored terminal indicate?
user avatar
  • 4,927
0 votes
1 answer
443 views

Find the Resistance between Two Terminals [closed]

Let's say R = 49 ohms, and we want to find Req between a and d, how do we do that? Do we have to find Req for the whole circuit?
user avatar
-5 votes
2 answers
72 views

Electrical energy saving [closed]

"You can not pay for the light! This CUTE for years was..." I wonder, what will happen if to do what is illustrated on the picture. I think there are two cases: Hot terminal of left outlet connect ...
user avatar
  • 3
0 votes
1 answer
463 views

Can I safely connect 20 Raspberry Pi Zeros to this 5V 10A power adapter

I want to connect 20 Raspberry Pi Zeros (5V, .200-.300A) to a 5V 10A power supply shown below. The setup Im planning will look like the photo below but with many more Raspberry Pis. I posted my setup ...
user avatar
  • 175
4 votes
1 answer
3k views

How many wires can I safely fit into this screw terminal?

I have about 40 positive and 40 negative 18 gauge wires that I am trying to connect to one DC power source. I have a few terminal blocks to achieve this. Each terminal block has 2 rows of 12 ...
user avatar
  • 175
0 votes
1 answer
194 views

Connecting a ring terminal to a smaller stud

This 12V DC breaker panel is meant to carry up to 100A, but provides a fairly small stud for terminal connection. The product documentation doesn't appear to indicate the stud size; it was measured ...
user avatar
  • 241
2 votes
1 answer
164 views

Are the 2 terminals of an incandescent bulb lamp equivalent?

Compared to a resistor, which has 2 equivalent terminals, does an incandescent bulb lamp also have equivalent terminals?
user avatar
0 votes
2 answers
161 views

Is it possible to securely connect 20AWG wire to CR2 battery terminals?

I’m trying to securely connect a positive and negative 20 AWG thickness wire to each terminal of a CR2 battery. From what I understand, they don’t make terminal connectors for these types of ...
user avatar
  • 73