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  • coupling - What does an RF coupler actually do? - Electrical . . .
    Above is a 3dB 75 Ohm splitter is also a DC-3 (meaning ideal 3db Directional Coupler , but actually 3 5) Depending on mutual coupling impedance, the coupler can be a -3dB tap ( - 0 5dB loss) down to a -50dB tap with low instertion loss Also they can be equal power taps This one can split 5kW at one frequency
  • RF Directional Coupler - Electrical Engineering Stack Exchange
    Directional coupler from here: - Coupling Loss - Amount of power lost to the coupled port (3) and to the isolated port (4) Assuming a reasonable directivity, the power transferred unintentionally to the isolated port will be negligible compared to that transferred intentionally to coupled port
  • Why use an opto-coupler? - Electrical Engineering Stack Exchange
    Maybe I have a misconception about the opto-couplers But from my experience in dealing with electronic circuits, one of the main reasons for using an opto-coupler is to separate the high-frequency part of the circuit -which does the processing jobs- from its low frequency and power supply part (and I know about the role of capacitors
  • How reliable is using couplers to extend Ethernet cables?
    Oh, and in one place where I had to use a socket I've used tool-less Keystone below It works flawlessly at 1G for many years now I guess you can make your own coupler out of two sockets like that one Or cut the plugs off one end of two 30m cables and replace them with sockets, effectively converting patch cable into extension cable Note
  • rf - How does this HF coupler work? - Electrical Engineering Stack . . .
    For those of us working in an engineering design position, we have to be careful about reviewing ham resources -- they often contain technical errors (like this coupler, arguably), they are often poorly measured (no data at all; sparse data; or data obtained under erroneous assumptions, e g antenna gain pattern depends on unstated feedline
  • Difference between RF splitter and coupler? - Electrical Engineering . . .
    It has an input, an output, a coupled port, and a load It's a device that operates on an input so that two output signals are available, on the output port (larger signal) and the coupled port (smaller signal) However, when the input is applied to the opposite port of a terminated coupler, only one output signal is produced
  • wave - How does an swr meter directional coupler work? - Electrical . . .
    Of course, there are also some reflections that happen at the discontinuities in this structure, so that the directional coupler can't have perfect directivity Also, if you look up directional couplers on Wikipedia, you'll see there are numerous other types beyond the simplest one I've shown here, and various tricks to enable the coupled-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
  • Measurement of Isolation in a Directional Coupler
    In the industry, we use 'through power', 'coupled power', and 'isolated power' I assumed by 'back power' you meant power reflected back to the source Yes, by all means use coupling+directivity to estimate the isolated or back power However, in a 3 port coupler with one port internally terminated, it's not possible to measure directly
  • How to calculate exactly resistors values of opto coupler
    Opto-coupler base connection speed influence 0 QRE1113GR Reflective sensor biasing 0





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