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 …

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 on a through …

Aug 26, 2023 · If a directional coupler is labeled 5-1002 Mhz, what happens to frequencies above that? Is that just the rated frequencies but above that may work fine, or does that mean it blocks everything …

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 …

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 …

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＝...

Nov 10, 2014 · 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 …

Oct 7, 2020 · I am currently redesigning a circuit to switch a spring applied brake using an Arduino Micro. The current circuit looks like this (please excuse if I'm using wrong symbols, I'm learning by …

Jun 24, 2022 · I'm working on a project which uses a PCBA which basically acts as a USB-C extension. It has 2 USB-C receptacles (female) connectors. The mapping between the two receptacles is one to …

I want to understand how the CTR of an opto-coupler is linked with its other parameters, for example its switching speed or time delay between input and output or any other parameter. I am using ...