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Canada-0-MATTRESSES Company Direktoryo
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- coupling - What does an RF coupler actually do? - Electrical . . .
To start with, I've had difficulty finding a good, simple explanation of what directional coupling is I read through Radio Electronics, but the section on directional couplers doesn't give an overview of what it means to "couple " Could someone offer a simple explanation of what "coupling" is and what a directional coupler actually does?
- How does this HF coupler work? - Electrical Engineering Stack Exchange
I came across this coupler design in this link in another question It's designed to be used to couple a small monitoring amount of signal off a 1 kW HF (3 MHz to 30 MHz) signal on a through line
- high voltage - What types of bus couplers exist? - Electrical . . .
A bus coupler is just a normal circuit breaker (and isolators), no matter where it's installed, or which busses it's connecting A "cross bus coupler" is just a bus coupler that happens to be connecting the two busses of a double-bus switchyard It's not a different type of switchgear and shouldn't be classified as such
- opto isolator - Electrical Engineering Stack Exchange
As long as the opto-coupler doesn't introduce a huge phase shift, causing feedback to get precariously close to becoming positive, or isn't asked to produce output current or voltage beyond its ability, then this closed-loop system as a whole finds and maintains the state
- serial - UART isolation with opto-coupler - Electrical Engineering . . .
UART isolation with opto-coupler Ask Question Asked 2 years, 8 months ago Modified 9 months ago
- opto isolator - Electrical Engineering Stack Exchange
Higher than 1kHz is not advised when using opto-coupler, because opto-coupler transistor switch-off time can be significantly longer than shortest PWM pulse Short PWM pulses are somewhat elongated, diminsihing control at low duty-cycle Any capacitance anywhere will further reduce PWM precision
- opto isolator - Electrical Engineering Stack Exchange
Opto-isolators are designed to switch a small amount of current A solid-state relay typically contains an opto-isolator along with some circuitry to switch a large amount of current in response to the small current switched by the opto-isolator
- current - Electrical Engineering Stack Exchange
From what I understand, my opto-coupler should be fast enough, so that it can transmit the narrowest pulse (1% duty cycle), which has a duration of 1% * (1 1000) = 10 μs Consequently, I need to have: tr + tf < 10 μs, where tr and tf are rise and fall times of the opto-coupler Is the above logic correct?
- When do we prefer isolator over optocoupler?
A opto-coupler or opto-isolator (different words for the same thing) is only one method Opto-isolators can be broken into a few broad catagories The most common is a LED shining on a phototransistor As you found, these usually have a few µs to to 10s of µs propagation delay, particularly when turning off
- antenna - Couplers and dividers as baluns - Electrical Engineering . . .
Can every divider and coupler that provides 3dB amplitude divison and 180 degrees phase difference be used as balun? Rat race coupler and lange coupler provide the two conditions mentioned above
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