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Questions tagged [comparison]

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4
votes
4answers
415 views

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

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-...
0
votes
1answer
65 views

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 ...
0
votes
1answer
93 views

Comparison of 1d and 3d accelerometers [closed]

I have to use an accelerometer in my project. The project demands high accuracy in measuring acceleration magnitude and phase in all the three axes. I am searching for a detailed comparison of using ...
0
votes
1answer
517 views

VHDL vs SystemC library [closed]

Today I learned about SystemC, a C++ library that make development on FPGA easier. (for people that know C++) Apparently, it is as efficient as VHDL (speaking of performance) and faster to learn and ...
1
vote
1answer
4k views

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 ...
0
votes
1answer
137 views

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 ...
0
votes
3answers
68 views

checking voltage range without a fixed reference voltage

I am trying to come up with a circuit to determine if my power supply voltage is within a specific range. For example, my nominal voltage is 3.3V but I want to make sure that the lowest voltage that I ...
2
votes
1answer
720 views

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

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 ...
1
vote
2answers
4k views

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....
0
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1answer
546 views

Comparison of the efficiency of DC motor current limiting / control methods?

I'm using the wheels and motors of an RC toy car as a simple robotics platform. The car has 2 motors, one drives the back wheels, the other steers the front wheels. The steering motor is stalled by ...
1
vote
4answers
1k views

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 ...