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Questions tagged [terminology]

Terminology is the studying of the terms used to identify things. In electronics, just like any other complex human endeavour, using the proper terms helps in understanding.

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24
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2answers
3k views

What's the meaning of Electrical Inches?

I was reading a PCB design notes and guidelines from Xilinx for their 7 series FPGAs and came across this sentence: The capacitors should be placed as close as possible to the FPGA. Any placement ...
0
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2answers
75 views

How to classify power electronics components in 2 main groups?

I'm working on preparing a course about power electronics, and with my basic search conclusions. I thought that if it's possible or acceptable to classify the power electronics components in 2 main ...
0
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2answers
38 views

Definitions of elements, nodes, branches, loop, mesh for a network with short circuit

CONTEXT This question is intended to highlight the lack of precise definitions of basic circuit terminology that I have found. For example, consider the following definition of branch. "A ...
18
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4answers
2k views

Why does `buck` mean `step-down`?

I just read about buck converters and boost converters and buck/boost converters. Great stuff. But, why is a step-down converter called a buck converter? I tried to research this myself. According ...
7
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3answers
888 views

The term Feed-forward and its meaning?

I am trying to understand the technical meaning of the term 'feed-forward', when and where it can be used and where it cannot be used? I have seen this term in various different areas. For example: ...
5
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1answer
721 views

What is this kind of symbol meant to be?

I found this picture in some old labnotes where one wants to determine the vacuum permittivity \$\epsilon_0\$ by using a resonance circuit for a sender and recipient each. However, I don't understand ...
0
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1answer
77 views

Are there round header pins?

I am attempting to get two probes through a sealed case to detect the pH of a fluid like water. My thought was to get two header pins and seal them with a custom 2mm diameter seal. However it looks ...
2
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1answer
38 views

What is meant by the term “baseline noise” in this context?

I came across this article about oscilloscopes. Under the figures and scope screenshots there is a term called "baseline noise". I googled but it turned out this baseline noise is used at different ...
3
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3answers
192 views

Is space division multiplexing really multiplexing?

I don't know much about electronics, but happened upon the Wikipedia article for Multiplexing, which defined it as: a method by which multiple analog or digital signals are combined into one signal ...
0
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2answers
44 views

Need a 48v relay but I don't know the terminology

I need a little terminology help so I can search for and obtain the correct relay. The relay will control a 48v 32a circuit. It should be normally open unless a signal is present. If the signal is ...
0
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2answers
68 views

Electrodes and number of pins in vacuum tubes

I am confused regarding the terminology 'diodes', 'triodes' etc and the number of pins in these elements. If a diode has a cathode, an anode, and a supplementary anode (the control grid or plate) and ...
3
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1answer
69 views

DC-DC Converter - Why is the input voltage called Vg?

In the textbook I'm reading (Fundamentals of Power Electronics 2nd Ed, Erickson and Maksimovic), the input voltage for several different types of converter circuits is labeled Vg. The textbook gives ...
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0answers
47 views

Control a solenoid position “in / out” with power only (no spring)

I'm going to use a < 5$ solenoid (vertically oriented) that has to press something. If I understand well, a linear solenoid like this one: moves to one precise position when powered, but when you ...
0
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2answers
67 views

What does “heavily decoupled voltage source” mean in this context?

Regarding the following paragraph: To measure the amount of input-referred noise, the input of the ADC is either grounded or connected to a heavily decoupled voltage source, and a large number ...
0
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2answers
51 views

Calculating voltage drop and current use of an IC

I’m trying to figure out the voltage drop and the current used by a Johnson counter from a data sheet and am feeling a little lost. In particular I’m looking at a CD4022B from TI. I’m looking at ...
0
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1answer
67 views

what is the difference between rated power and power rating?

Very appreciated if anyone can explain the difference between rated power and power rating. I used to see both of them in electronic magazine.
0
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2answers
129 views

What is a “digital” servo motor?

ServoDatabase lists various different servo motors, and describes some as "analog" (e.g. SG90) and some as "digital" (SG92R). "Digital" servo motors are apparently better (they seem to cost more, ...
18
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3answers
4k views

What does a resistor value of “NOM” mean?

On this schematic of part of the Apollo Guidance Computer (found here), some resistors have a value of "NOM." According to this question, "NOM" stands for "nominal" when it's found in a datasheet, ...
3
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1answer
231 views

Is there an industry term for IC “drop-in” circuits used for malicious or clandestine purposes?

There is a vocabulary for code used for malicious or clandestine purposes. Terms include malware, virus, trojan-horse... In a large IC with millions of transistors, it is feasible to produce a ...
0
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1answer
69 views

Help deciphering abbreviated terms in technical manual

I'm having trouble deciphering some abbreviations in a parts list of capacitors from a technical manual for an old (80s-90s) computer. I've managed to work out that "CPCTR" stands for "Capacitor", ...
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3answers
52 views

Is it correct to say that a smartphone cable is only a “1A” cable?

A store owner said that some lower quality smartphone charging cables are only "1A cables", so if you want 2A, those cables won't do the job. Is it correct to say a cable is only 1A? Does the metal ...
7
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3answers
2k views

What is meant by 'local' in local oscillator?

We know that a local oscillator (LO) is an electronic oscillator used with a mixer to change the frequency of a signal. But what do we mean by 'local'? How is 'local oscillator' different from ...
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2answers
83 views

Two-port circuit with input/output duality

Suppose I have a circuit with two ports. One port is considered the input, and the second port is considered the output. Assume it's described via $$V_{out} = \frac{V_{in}}{2}$$ Now assume there's ...
1
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1answer
141 views

What do terms half-rate and quarter-rate mean for DRAM memory controllers?

DDR3 Memory controller are often presented as being half rate or quarter rate, but what does this mean? e.g if I have a DDR3 SDRAM that is x16, what does the half or quarter rate imply in that case ...
0
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3answers
520 views

Confusion over the power wires of USB (GND and +5v)

I'm converting a battery powered device to be powered off a USB connection. I think I have everything figured out except one thing. I understand there is a GND wire inside the USB cable for power, ...
0
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0answers
13 views

Acronym for Conductive Polymer Al Solid capacitors?

Is there an universally understood acronym for that like elcap or mlcc? I've seen Poscon (POlymer Solid CONductive, presumably) being used, similar to Panasonic\$^{tm}\$ OS-CON\$^{tm}\$, which was the ...
2
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1answer
54 views

What is a “reverse type” tsop?

I was looking through a datasheet, when I noticed this sentence: TSOP package is suitable for cards, and reverse type TSOP is also provided. What is a "reverse type" TSOP? I am familiar with ...
0
votes
1answer
111 views

what is the German/Austrian nomenclature(Voltage and current direction) in electronic circuit?

AS I came from a country where we use the french system in defining the voltage current arrows in electronic circuit, I am confused about the German/Austrian system where I see the voltage arrow is ...
67
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5answers
17k views

What is the name of these little plastic things that protect wires from being cut into by the sharp edges of a drilled hole?

What is the name of these little plastic things that protect wires from being cut into by the sharp edges of a drilled hole?
1
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1answer
52 views

Is there an industry-wide name for anti-parallel diodes across an IGBT module's collector and emitter?

For example, this datasheet refers to a 'freewheeling' diode and a 'boost' diode. The upper diode is the freewheeling diode, right? If you wanted to switch an inductive load with a single such module,...
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0answers
20 views

What does PCTL32_PUB_SMCTL mean?

I am trying to decode some serial log messages from a monitor scaler board which isn't quite working correctly. The processor is a STDP9320-BB which looks to be running on a x186 architecture. Here's ...
1
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1answer
73 views

what is exactly 'gain and loss' is and how is it used?

I'm kinda confused by its definition. I know that gain is a measurement and gain and loss is the calculation (??). I'm still in 12th grade. Please guide me.
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2answers
190 views

Magnetic path length for partially wound toroidal transformer core

According to Wikipedia, magnetic path length is defined as "the effective length of a closed magnetic loop inside a magnetic core made of ferromagnetic material." Thus, for a toroidal core that is ...
-1
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1answer
72 views

What is the meaning of hostless in terms of IC/Controllers/SOCs? [closed]

The question is specific to QCA4020(You may not be able to access it!).There are certain IC's that claim to be hostless, and to my understanding that is it doesn't need a master to control them. But ...
0
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1answer
28 views

Is rheostat the same thing as variable resistor?

In class notes, it is written that variable resistor is the same thing as a rheostat. I googled it to find that some people on different question/answer forums have different "perspectives" about this....
0
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2answers
62 views

Is the potential in “potential difference” the short form of potential electric energy?

Just a few days ago, we were taught the basics of electricity in the IGCSE Physics syllabus. While he's said a great deal about potential difference and how it's the difference in voltage between two ...
1
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2answers
122 views

Is this an encoder? Correct naming of circuitry

Newby to the digital circuitry world please be nice. For a rock paper scissors game, I've created the following to determine a winner, however I don't know what this circuit would be called in the ...
0
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0answers
31 views

Pulse width modulation and textual expression of resulting stimulus level

So we have been using pulse width modulation (PWM) as a means to digitally change the driving voltage of vibration motors. Usually, afaik, the resulting voltage from PWM is expressed as %duty cycle ...
1
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3answers
178 views

I'm having trouble understanding SPST terminology

Before someone LMGTFYs me, let me get this straight: I HAVE DUCKDUCKGO'ed this already, but I still cannot understand what switch 'pole' and 'throw' mean. I really just need a clearer explanation of ...
0
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2answers
424 views

Push button switch with “hysteresis”

I am an avid Digikey-goer and I was looking for a push button that I needed for a project. I am unsure whether the phenomena I want in this part is explicitly marked on the product, or searchable on ...
0
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2answers
176 views

Basic LC Circuit: Oscillator or Resonator?

Is an LC circuit an oscillator, or resonator? I just want to make sure I'm using the correct terminology. I've been calling it an oscillator, based on the oscillating waveform it generates. Someone ...
2
votes
1answer
165 views

Does DCMI mean dc mA?

I am working with a 60 year old schematic and test procedure. The latter refers to adjusting rheostats to "300 DCMI" or "between 100 and 130 DCMI". There are voltage and ammeters attached to different ...
1
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7answers
138 views

A machine consumes power or energy?

What is the correct wording to use in a formal paper, "power consumption" or "energy consumption" for an industrial machine? I totally understand the practical difference between power and energy, ...
9
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5answers
3k views

What is AC actually?

What is actually alternating current (AC)? And direct current (DC)? I've been reading several books about basic electric circuits analysis and they are contradictory. Some books say that AC is the ...
2
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2answers
2k views

Relevance of Galvanic Isolation of Boost Converters

Flyback Boost converters use a transformer and this setup is still referred to as galvanic isolation. In most use cases, the output voltage is usually orders of magnitude greater than the input, and ...
7
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1answer
561 views

What sealing type for cable/tube enter casing for outdoor use?

I build an electronic device which is used outdoors. A bundle of cables enter the device in a small 30mm diameter tube. This tube should be sealed so no dust/water/moisture enters the casing. It ...
1
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0answers
47 views

With multiplexed displays, what is the correct term for a single “frame”?

Let's take a look at the following animation demonstrating time division multiplexing. Source As you can see and probably know, the image is shown by displaying one line after another in rapid ...
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2answers
1k views

What does “bolt-on” mean in this Arrow Electronics' job posting? [closed]

I came across of Arrow Electronics job posting, and wondering what term "bolt-on" means. While I can find generic description of this term, I can not understand how it relates to the electronics and ...
2
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1answer
102 views

Term for a guarantee a manufacture makes that a product will be produced for a number of years?

Sometimes manufactures of electrical components guarantees that a product will be produced for a number of years so you can rely on getting new components for future production runs. What is the term ...
0
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3answers
7k views

What does the Amp rating on a Diode Mean?

I have two rectifier diodes, a 1N4007 and a 1N5391. The first one is rated at 1A while the second is rated at 1.5A. What does the current rating mean? Will I damage/overheat either if I connect a ...