Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [comparison]

20 questions
6
votes
4 answers

Is DC-to-DC (24 V to 12 V) buck conversion typically more efficient than AC-to-DC (110 V to 12 V) conversion?

While building an online UPS system, I'm basing the choice to eliminate as many AC inverters from the system as possible because of the assumption that DC-to-DC conversion is more efficient than AC-to-DC conversion. I'm not totally sure that this is…
Dobler
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3
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1 answer

I²C bus buffer vs extender P82B715 vs. P82B96

while searching for a way to use the I²C bus for distances about 5m I found these 2 chips P82B715 and P82B96. I'm wondering which one I should use (I know this is up to me). So my question is which are the pros and cons of using one chip or the…
Falk
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1 answer

How do I read capacitor data sheets to best evaluate a replacement capacitor?

I'm looking at two capacitor data sheets for some blow caps in my KBNBX-LA motherboard. Here is a pictures of the caps on the mobo. The caps read Rubycon 6.3v3300uF MBZ. I was able to find these exact caps on eBay, and and Amazon. But, they were…
Evan Carroll
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0 answers

dv/dt capability comparison of two MOSFETs

I am doing a datasheet comparison of the AUIRFP4568 and the IXTH150N15X4 MOSFETs. The MOSFET is for a three phase inverter working as MCU (Motor Control Unit) to control a PMSM motor, and will be driven with this gate driver from Infineon. I am…
Alison
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1
vote
1 answer

PWM FAN Control signal comparison

I am working on a cooler controller board. I am using 4 wire fans (12V, GND, HALL, CONTROL), I am using a simple 555 timer circuit to control the speed of the fans. However it would be nice to display on the control board if a fan is spinning lower…
Zoszko
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1
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1 answer

How to detect a signal if it is greater than VDD or smaller than 0?

I need to detect a signal if it is greater than VDD or smaller than 0. I can't use comparator because the input signal is outside of common-mode input range and I have only one power supply VDD. Is there a simple way to do that?
emnha
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1
vote
2 answers

Which 4-bit Binary Number Is Greater?

My Task I'm working on an extra work question our teacher assigned us from the book. Design a combinatorial circuit that compares two 4-bit unsigned numbers A and B to see whether B is greater than A. The circuit has one output X, so that X = 1 if A…
Dunka
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4 answers

When do we prefer isolator over optocoupler?

Today I have learned that a device called "isolator" exists (eg: SI8712CC-B-IS). Its function is very similar to the optocoupler's. On the good side, it is much much faster. While it is very hard to find an optocoupler with propagation delay less…
hkBattousai
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0
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3 answers

Push-pull converter vs full-bridge converter

The full-bridge converter is just a version of the push-pull converter with additional MOSFETs at the primary side and an untapped transformer from the primary side. A full-bridge converter requires extra high-side MOSFETs to control and brings in…
CaveScientist
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1 answer

Which MOSFET for a 120W boost converter?

IRFP250N vs IRF3415 I'm making a boost converter which converts 12 V to 100 V maximum. The maximum input current is 15 A. Power of the converter is 120 W. I will drive the MOSFET with a TC4429. At first I chose the IRFP250N because it has low…
CaveScientist
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0 answers

Arduino board consumption benchmark

I know consumption depend of the type of application, but I would like to know if a comparison of average consumption exist between arduino and similar boards (Teeny/Dfrduino...). The board I am looking will control small servos, so the resolution…
Jessay
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1 answer

Stand-alone ESC v.s. BLDC driver ICs, what's the difference?

I am designing a customized miniature drone for research and would like to embed the ESC for BLDC motor directly on board to save space and weight. I have searched a lot for ESC design online and can understand the basics to the point that I think I…
Wjx
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2 answers

What is the range of an IR sensor in a prototype comparing to real life application?

I'm currently having a prototype which involve using an IR sensor for obstacles detection. But the results required a comparison of the range result I obtained from the prototype to compare it to a real life application. I have been surfing the…
littleamateur888
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1 answer

VHDL using 'if' to compare a 'variable'

Using Xilinx, I need to compare a 'variable' called 'row', defined as: variable row : std_logic_vector(2 * n - 1 downto 0); This line was given to me, now I need an if statement that will execute if row is = 1. I have tried: if (row = "1")…
Luca Ruggier
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1 answer

Light bulb LED equivalent of a CFL (Compact Fluorescent Lamp)

If I have a CFL light bulb of 100W what would be (how many watts ) its equivalent in LED. In the place where I live LEDs have taken over and CFLs are no longer available, but I need stron bright lights and with LEDs it ranges from 6 to 14…
Xsmael
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