coupling - What does an RF coupler actually do? - Electrical ...
Apr 17, 2018 · 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 …
How reliable is using couplers to extend Ethernet cables?
Jul 18, 2018 · I want to obtain one 90 meters of Ethernet CAT6 cable (with RJ45 connectors) by using three 30 meters of CAT6 cables with RJ45 connectors. The only option I could find is to …
opto isolator - Electrical Engineering Stack Exchange
Feb 9, 2025 · 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 …
high voltage - What types of bus couplers exist? - Electrical ...
Jan 31, 2017 · 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 …
Difference between RF splitter and coupler? - Electrical …
May 9, 2011 · Somebody suggested using a splitter for this work, but when I tested one I found that all three nodes could communicate with each other. Now, somebody is telling me to use a …
How to use an optocoupler with a transistor on both sides?
Jun 20, 2020 · Putting 17VDC 30mA on the coupler's outputs isn't wise either so I have a second transistor there as well. The problem is that I don't know how to complete this circuit?
Powering a 5V Relay from ESP32 using a PC187 optocoupler: how …
Jul 7, 2023 · The picture of the coupler shows 10 kohm and a LED in series with the coupler diode. This is a design for 24 V input signals, change R1 to 100 ohm. The output circuit is …
How to calculate exactly resistors values of opto coupler
How to calculate exactly resistors values of opto coupler Ask Question Asked 11 years, 10 months ago Modified 5 years ago
AC Optocoupler for 230V line detection - Electrical Engineering …
Apr 12, 2018 · I am trying to detect line voltage (230V AC, if the supply is ON/OFF) by a microcontroller with the help of an AC optocoupler. The optocouplers I have evaluated are …
Newest 'coupler' Questions - Electrical Engineering Stack Exchange
Jul 30, 2025 · Bidirectional Coupler from Directional Couplers new to RF engineering. I want to build a wideband bi-directional coupler because commercial ones are quite expensive. I …