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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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59 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
35 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
152 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
1k 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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62 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
65 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
69 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 ...
3
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1answer
239 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
35 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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27 views

Questions about this Terminal Block for Power Distribution

I purchased a kit for practicing PLC programming, and it came with a kind of terminal block for power distribution that I've never seen before, though I'm also a beginner regarding electronics. I ...
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1answer
276 views

Testing STM32 USB CDC TX and RX with 2 Linux terminals

I programmed a simple USB CDC (virtual COM port) communication on a STM32L476RG with STM32CubeMX and HAL : when the MCU receives the command "LDRT", it toggles a red LED on the board, and sends its ...
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1answer
50 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
76 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
121 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
130 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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0answers
36 views

Female crimp contacts: how to identify different sizes?

I purchased two different pairs of housings to manufacture cables that will need to plug into a PCB via mating terminals. The first kind of housing has a spacing of 2.54 mm. The second 5.08 mm. So ...
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2answers
278 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
1k 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
163 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
65 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
59 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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3answers
137 views

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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3answers
680 views

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
50 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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0answers
63 views

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
6k views

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
259 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
398 views

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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2answers
252 views

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
576 views

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
2k views

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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0answers
130 views

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
449 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
185 views

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
918 views

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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3answers
546 views

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
58 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
560 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
192 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'...
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1answer
246 views

what are the best practices for bolting a ring terminal to a steel panel?

i have made several new bolted grounding points in project boxes and in my car. i don't have data on how long they last, but i been following a strategy like this to connect a ring terminal: drill a ...
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1answer
161 views

Cannot send two digit number using realterm to xilinx microblaze through serial port

I am using the default example which can be found here. The part of the code I am interested is this: ...
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4answers
215 views

What options are there for good Low DC Voltage, High Amperage Alligator Clip connections?

I have a 12V DC, 20A compressor for my offroad vehicle to inflate its tyres after driving on the beach. I also have high current jumper leads with large alligator clips at each end for starting cars ...
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7answers
11k views

How to memorize a diode's polarity in symbol? (self-answered)

How to memorize a diode's polarity, such as anode and cathode in symbol?
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2answers
512 views

Will RS 485 to RS 232 converter change the half duplex mode to full duplex mode?

I am using an RS 485 serial connection through which I need to send S19 files for my boot loader project. Since it is a half duplex mode of connection, I need to toggle a dedicated pin before sending ...
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2answers
117 views

Can we send a file through Half Duplex connection?

I am working on a boot loader design for a kinetis controller. I am using this Terminal application ( https://sites.google.com/site/terminalbpp/ ) . I am able to send texts like, " Hello world" ...
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1answer
94 views

14 - Bananas and Tips: are they classified as terminals, connectors, both or neither? [closed]

Bananas and Tips: Are they classified as terminals, connectors, both or neither?
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2answers
81 views

11 - Disconnects: are they classified as terminals, connectors, both or neither? [closed]

Disconnects: Are they classified as terminals, connectors, both or neither? Picture shows: bullet, knife, quick-connect
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2answers
365 views

UART communication issue

I am trying to send something from an atmega to my pc. The setup is: Ubuntu 14.04, atmega644P-20PU, USBASP v2, TTL-to-USB pl2303 Firstly I tried to write the code in C and used this code and then ...
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1answer
213 views

Two-terminal Connection High-Side MOSFET driver

So I'm trying to make a discrete device that functions the same as the highlighted portion of the diagram, which is taken from a Battery Management System chip. I understand that n-type FETs are ...
5
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4answers
2k views

UART, minicom and ASCII

I am trying to send my name (Ziga) through my micro-controller UART periphery to my PC. GND, Tx, Rx lines from micro-controller are directly connected to the UART-USB converter CP2102 which is pluged ...