| Capacitive Coupling |
Website Links For Coupling |
Information AboutCapacitive Coupling |
| CATEGORIES ABOUT CAPACITIVE COUPLING | |
| electronics terms | |
| electric coupling | |
|
"Gimmick" is the name of a very simple kind of capacitive coupling. It is a piece of wire that is placed in close proximity to another one, providing a capacitive coupling between the two circuits of a few Picofarad s in value. Sometimes the wires are twisted together for physical stability. USE IN DIGITAL CIRCUITS In digital design, capacitive coupling is typically referred to as AC-Coupling, which allows a signal to maintain different voltage levels at different ICs. For example, to route a signal from a +3.3v to a +5v device, one can place a capacitor inline with the signal and place a pull-up resistor on the +5v side of the capacitor. The inline capacitor acts as a High-pass Filter and blocks the DC offset. Placing weak pull-down resistors on each side can also help increase signal fall-time, although this increases signal distortion.. REFERENCES EXTERNAL LINKS
|
|
|