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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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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1answer
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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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46 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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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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3answers
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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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2answers
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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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1answer
72 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
64 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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528 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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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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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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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
114 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
574 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
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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
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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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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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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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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
363 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
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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
227 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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1answer
72 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
68 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 ...
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Why did spilled coca-cola on a terminal strip cause this odd voltage problem?
I recently repaired a vending machine that had coca-cola spilled on a terminal strip. A 9.5V source from the strip measured correctly on a DMM when there was no load on it but dropped to 2V with its ...
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soldering wires to 12 V car plugs?
Many of the cheaper lighter adapter plugs do not come with screws for connecting the wires to them, but rather with just the bare metallic contacts - to which I am supposed to do what, solder the plus ...
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1answer
53 views
Connfly 50-mil IDC mating part (types of socket/connector pairs)
I am unable to find the right mating part (connector) for this 50-mil contact pitch (supposedly) IDC socket. The groove in this particular socket has an offset, and I am unable to find any connector ...
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Molex 5556 vs. 44476 Terminals for ATX / EPS connectors
I'm looking into terminating a custom-length power supply extension cable to make everything look nice / fit in an awkward case. While researching parts I noticed that the EPS12V v2.0 specification ...
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3answers
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When do I connect to negative terminal or ground?
Easy question (or at least I think). I've installed a siren in my vehicle which calls to pull power direct from the 12 volt battery. I currently have the circuit completed by connecting to the ...
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1answer
314 views
UART in Linux: Keep sending for a long time while message is short [closed]
I have written a program which can send and then receive the message just sent from the UART port and I have connected the TXD to RXD together of the same UART port. It has three parts, which are the ...
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2answers
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VHDL: Receiving Data from Terminal to FPGA using TTL
(I posted same question in stackoverflow but didn't get right answer)
I'm newbie in VHDL. So today, after UART Tx, I tried to read Datas that coming from Realterm terminal. I only wrote Rx codes to ...
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VHDL Sending Data from FPGA to TTL
I asked same question in stackoverflow but didn't get any good answer. I'm newbie in FPGAs and VHDL. This time, I m trying to send Data from FPGA to TTL. I' m using GPIO pins for TX and GND and Data ...
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1answer
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What is the terminal labelled “U” in some autotransformers?
I'm trying to wire an autotransformer for usage as a speed controller for a brushless motor fan.
The terminals are quite self explanatory:
Pe for ground, ...
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2answers
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Why is the plastic around my battery terminal melting?
I am using 2 dry batteries for my backup UPS. For some reason the plastic around one of the terminals of a battery is melting and producing a lot of smell. Most of the times it works fine but at some ...
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Installing (and soldering to) PTFE (teflon) Insulated Terminals
I am doing a condenser microphone board project. Now I need to install two PTFE insulated terminals (these are in the picture) to a board. The holes are a little larger than the bushing of the ...
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2answers
571 views
Power supply terminals
I've been looking around at some power supplies that I am hoping to run a 400W 48V DC motor on. Currently I am looking at this one:
Weidmuller PRO ECO 480W 42V-56V dc 10A
My questions are about ...
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0answers
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Weird characters on Terminal output (Zybo-Zynq 700)(Soft Error Mitigation IP)
I'm using the Zybo board. I have a design like the following one:
On the SDK, I have a code like the following one to handle data exhange between PS Uart0 (where the SEM signals are connected, ...
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2answers
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What is the difference between nodes and terminals?
So my textbook uses both of these terms but doesn't really give clear definition of each which is starting to lead to some minor confusion. I was reading a Wiki entry on ports which stated
A port ...
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Connect panel mount switch to PCB
I'm looking for more information on how to connect a panel mount switch to a PCB.
Switch Diagram:
I've read that it's generally bad to connect this kind of mechanical device directly to the PCB (...
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1answer
68 views
Bolting a steel ring terminal to a steel tab on IGBT?
This is a similar question to one answered here: what are the best practices for bolting a ring terminal to a steel panel?
However, the main difference is that I am not attaching a ring terminal to a ...
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1answer
778 views
Understanding DIN terminal block current ratings
I am making a control box for 12V 5 DC motors (~1.5 A total) and LED panels (~30 A). The system will pull ~30-35 A when it is running. Upon hearing of my project, a friend gave me some Allen Bradley ...
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2answers
222 views
Using straight connectors with screw endpoint?
I am a complete newbie to wiring but have almost completed the install of a MOSFET board on my 3D Printer. Felt it was necessary to avoid potential fires that this particular printer is known for.
I'...
