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.

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2answers
232 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 ...
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70 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 ...
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1answer
529 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 ...
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183 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 ...
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0answers
50 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 ...
2
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1answer
178 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 ...
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0answers
145 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 ...
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1answer
73 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 ...
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1answer
73 views

Buy mosfets with 4 terminals [closed]

Where can I find MOSFETS which don't have the source and the substrate at the same potential? I have searched through the Internet but I only find MOSFET which have the source and the substrate at the ...
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1answer
86 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 ...
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3answers
65 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 ...
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35 views

Are there “Euro strip” terminal blocks with “rising cage” connections?

I'm continually modifying the connections all over (and under) my centrally controlled house. Terminals with bare screws are hard on the tiny wires, and "wire protectors" don't open back up nicely ...
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1answer
43 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-...
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1answer
40 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 ...
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1answer
56 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'...
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2answers
93 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 ...
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2answers
154 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 ...
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2answers
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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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2answers
323 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 ...
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0answers
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 ...
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1answer
402 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 ...
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1answer
33 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 ...
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1answer
98 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
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1answer
90 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 ...
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1answer
98 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 ...
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0answers
187 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 ...
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1answer
100 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 ...
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0answers
31 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? ...
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1answer
252 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 ...
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1answer
65 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 ...
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3answers
148 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. ...
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2answers
188 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 ...
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1answer
103 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 ...
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1answer
112 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 ...
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3answers
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?
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1answer
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?
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1answer
303 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?
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2answers
71 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 ...
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1answer
339 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 ...
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1answer
2k 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 ...
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1answer
154 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 ...
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1answer
146 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?
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2answers
138 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 ...
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2answers
310 views

Hack for connecting two terminal blocks?

If I bought some of these connectors. Is there an easy way to connect two of the green terminal blocks together? i.e. I would end up with a male to male DC adaptor. Could I do this without having ...
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1answer
614 views

Some questions about a terminal block voltage and maximum ratings

A screw terminal distribution block is shown below: A three phase motor driver manual specifies "connector voltage" and current for mains voltage connections for the motor. They specify current as ...
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2answers
507 views

Pin identification of transistor and transformer from photo of module

From the photos of this driver board (no hands on testing, the photos are all I have to work with), how can one reason-out the E, B, and C functions of the pins (1,2,3) of the transistor, and the coil ...
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1answer
7k views

How are terminal blocks depicted in a wiring diagram?

I have started to document the electrical system in a custom machine that we own. I'm using TinyCad for the schematic and that's working OK. I also want to create wiring diagrams to represent the ...
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2answers
264 views

soldering a 12V plug cathode

I cant seem to properly solder a stranded wire to that cathode terminal. Checked the answer https://electronics.stackexchange.com/a/90605/35737 - fluxing it did not help and solder does not adhere to ...
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2answers
193 views

Wire / terminal connections

I have this power jack socket. I would like to connect wires to the terminals permanently and to have a stable connection. I searched for a connector that would fit with the terminals of the power ...
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1answer
84 views

Pad shape for spring loaded pin

I'm going to use spring loaded pins (https://www.digikey.com/products/en?keywords=811-SS-004-30-002101%20) for interconnection between miniPCIe and base board. They are going to be mounted on base ...