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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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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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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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?
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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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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 ...
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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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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 ...
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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 ...
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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....
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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 ...
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2answers
107 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 ...
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26 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 ...
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131 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 ...
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290 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 ...
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151 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 ...
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1answer
129 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 ...
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7answers
133 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, ...
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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 ...
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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 ...
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548 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 ...
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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 ...
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1answer
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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 ...
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3answers
4k 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 ...
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2answers
3k views

What's the difference between the term 'Device' and 'Machine'? [closed]

Limiting the question only to the electrical domain. Calling AC machines as ac device mean the same or there is a difference in the terminology.
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1answer
83 views

Alternative name for overhead line, typically for data link between buildings

What is the term I should use to describe an overhead cable link that typically connects two buildings across a gap, eg a road? For the life of me, I can't remember the word I'm looking for. I think ...
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2answers
853 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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2answers
116 views

What is my firmware, software, and operating system? [duplicate]

I have a BLE Nano device: http://redbearlab.com/blenano/ It comes with something called MBED on it. I think this helps us flash the code that we write onto it. We are using a library called Nordic ...
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2answers
9k views

What is Full scale deflection?

On wikipedia In analog systems, full scale may be defined by the maximum voltage available, or the maximum deflection (full scale deflection or FSD) or indication of an analog instrument such as a ...
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Is the stepper motor DC or AC motor? [closed]

Is the stepper motor DC or AC motor ?
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250 views

What is the name of the current that creates the potential difference in an opamp?

Almost zero current is drawn by an opamp from its inputs (in theory), but still there must be tiny current causing the opamp to feel the voltage. What is the name of that sort of current in electrical ...
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557 views

What is a safe state machine?

When I implement a "safe" state machine in Quartus, what is the difference between a normal/unsafe state machine? Edit: And is this the same as: ...
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3answers
97 views

Correct Term for “shorting a resistance to start a diesel motor”

I'm currently translating some German technical terms for my English-speaking co-workers. The terms all relate to the Mercedes-made flame-starter for a diesel engine. I've come across the term "...
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616 views

Definition of single-ended vs. double-ended SMPS

I have seen references to switched-mode power supplies as being either single-ended or double-ended. How are these terms defined and contrasted with respect to SMPS design?
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109 views

Why is the notation for gain to be \$g_m\$?

I have been unable to find the origin of the notation for gain, \$g_m\$. I'm specifically curious about transconductance. I have a book from 1931 by van der Bijl (who surprisingly has a wikipedia ...
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2answers
1k views

What to call the PCB that a daughterboard is plugged into?

I'm looking for a concise term to describe something. Suppose I'm making a gizmo which has application-specific circuitry but also requires substantial computing power. Not wanting to reinvent the ...
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VDD and VCC pin naming convention in the IC

My question is to find whether there can be a definitive answer to this particular part. I have Cypress MBR3002 IC which has two power pins labelled VCC and VDD. I got a question from my ...
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124 views

What does “open drain when programmed for the wait function” mean (in micro controller spec language)?

So I am reading the Zilog Product specification for the Z8440/1/2/4, Z84C40/1/2/3/4 serial input/output controller (here it is http://www.zilog.com/docs/z80/ps0183.pdf). And there is one sentence ...
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2answers
948 views

What caused this noise in these servo signals and how do I properly describe the solution?

Please note that I'm not asking for help in fixing my noise issue. I've already fixed it. This question is more about describing the issue and using correct terminology. I have two small 5V servos ...
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2answers
160 views

Is there a term for when a component desolders itself from the circuit?

When a chip heats up too much it could desolder itself from the circuit. Is there a technical term for that?
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1answer
106 views

Switch operation terminology confusion

I was browsing for push switches on Element14 and due to the vast amount of choices, I wanted to narrow down my search. However I stumbled across the filter category "Switch Operation" and was ...
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3answers
635 views

Where did Bootstrapping get its name?

Bootstrapping is a clever technique where you use feedback to increase the input impedance (mostly in an emitter follower). Why is it named "Bootstrapping"? Just curious.
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2answers
473 views

Encoder terminology x1 x2 x4

As a translator from German to English, I'm looking for how English native speakers refer to this behavior of incremental encoders. The German here uses "4x-Auswertung" or "Vierfachauswertung" which ...
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2answers
881 views

“Top coupling” in VHF bandpass filter

I am looking at a filter design in the ARRL handbook for radio communications. It is a bandpass filter designed to pass 144Mhz with a bandwidth of around 12Mhz. The solid line represents a shield to ...
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68 views

DC compiler, synthesis, terminology

In the DC compiler user manual the following term is reported when talking about a command. Use the set_driving_cell command to specify drive characteristics on ports that are driven by cells in ...
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2answers
668 views

Why are they called flip-flops?

Why are flip-flops (bistable memory devices) called flip-flops? The Wikipedia entry for flip-flop says that the terms "trigger circuits" and "multivibrators" were used in the past but not the ...
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What is an analog meter (volt/ammeter) with the needle in the middle called?

I am making a demonstration which requires me to have access to a small extension that helps me prove Faraday's Law of Induction actually induces a current in a ...