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 does this HF 'coupler' work? - Electrical Engineering Stack …
Apr 14, 2024 · 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 …
How reliable is using couplers to extend Ethernet cables?
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 use three such …
Difference between RF splitter and coupler? - Electrical …
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 coupler. Can …
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 …
opto isolator - AC Optocoupler for 230V line detection - Electrical ...
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 …
How to know the minimum LED current of an optocoupler?
Oct 6, 2021 · I am going to need to use an optocoupler to isolate two circuits in two situations. In both situations, a MCU GPIO will be driving the LED of the optocoupler to send a signal on the …
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 use an optocoupler with a transistor on both sides?
Jun 20, 2020 · I am trying to switch a 17VDC 30mA load with a Raspberry Pi. To provide electrical isolation, I am using a two channel optocoupler, a TLP621-2 (datasheet). The second channel …