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 doesn't give an …

Jul 2, 2023 · UART isolation with opto-coupler Ask Question Asked 2 years, 6 months ago Modified 7 months ago

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 voltage beyond …

Jan 31, 2017 · There are various types of bus couplers (for double bus system, single section bus system, etc.). I know that bus coupler between two busbars is called cross bus coupler. How are …

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 PC814, H11AA1 and …

Jun 8, 2016 · How do I calculate the resistance between the Anode and the Cathode of an Optocoupler (while the optocoupler is on). I am messing aroung a little bit with optocouplers and found out using …

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 decided to build one …

Mar 17, 2022 · Congrats on a well formed question. I’d question if you need the opto coupler at all but the encoder datasheet is sparse on the voltage and current rating of the phototransistor.

Apr 13, 2025 · As I understand the optocoupler current transfer ratio, CTR is like the hfe of a transistor. I can't understand if the CTR is or isn't a critical value and for what applications is it used in. CTR＝...

Feb 6, 2022 · I have two types of PNP & NPN proximity sensors and intend to use one connection socket for both types. I design a circuit with two normal optos for each line however to save the parts …