filmov
tv
Impedance matching - why do we match impedance of electric devices?
Показать описание
What impedance is? Why we should match the output impedance of one device with the input impedance of the other? What's up with that? What would happen if I connect 50Ohm output to 75Ohm input? Does it matter if impedances do not match?
Impedance is a sum of all resistances: static and frequency dependant coming from capacitance, inductance, and reactance.
The voltage cannot exist without current. By changing the input/output impedance ratio, we change how much voltage comparing to current flow from one device to the other.
Guess what... the most power is transferred when that ratio is 1:1 - input impedance is matched to output impedance. Half of the voltage might be lost in a voltage divider, but power is transferred most efficiently.
When working with high frequencies, when the impedance is not matched, reflections as appearing and they take away some of the signals as well. It's just like a reflection in a glass of water. Air and water and "transparent" but since they have different densities, some of the light is reflected at the border between them.
#quadmeup #electronics #tutorial
Impedance is a sum of all resistances: static and frequency dependant coming from capacitance, inductance, and reactance.
The voltage cannot exist without current. By changing the input/output impedance ratio, we change how much voltage comparing to current flow from one device to the other.
Guess what... the most power is transferred when that ratio is 1:1 - input impedance is matched to output impedance. Half of the voltage might be lost in a voltage divider, but power is transferred most efficiently.
When working with high frequencies, when the impedance is not matched, reflections as appearing and they take away some of the signals as well. It's just like a reflection in a glass of water. Air and water and "transparent" but since they have different densities, some of the light is reflected at the border between them.
#quadmeup #electronics #tutorial
0:17:08
What does 'impedance matching' actually look like? (electricity waves)
0:10:57
Impedance Matching Basics
0:09:02
Impedance matching - why do we match impedance of electric devices?
0:04:33
Impedance matching explained
0:05:56
Impedance Matching
0:08:22
Impedance Matching Speaker Cabinets | Too Afraid To Ask
0:17:34
Impedance Matching - why we match output and input impedance
0:04:00
Why is 50 OHM impedance used in PCB Layout? | Explained | Eric Bogatin | #HighlightsRF
1:14:08
RF Design and Validation with VNA Demos with Rohde & Schwarz | Sierra Circuits
0:22:35
Impedance Explained.
0:07:01
IMPEDANCE MATCHING
0:18:07
A Better Explanation of Impedance for Audio Signals
0:04:12
What You NEED To Know About Speaker Impedance! | Series vs Parallel, Ohms, & Amplifier Matching
0:06:22
Cable Basics; Transmission, Reflection, Impedance Matching, TDR
0:12:37
Electro Magnetics Theory - Impedance Matching
0:12:07
Lecture -- Impedance Matching on Smith Charts
0:06:20
Impedance matching and cables
0:02:23
What is Antenna Impedance? (Explained)
0:02:36
Speaker Impedance Matching to Amplifier | What You Need to Know!
0:07:10
Understanding Speaker Impedance and Speaker Switches
0:00:50
Why Impedance Matching Matters! 💡
0:02:27
Impedance Matching | Electrical Engineering Concept | Love of Learning
0:11:46
There's a Lever in Your Ear and It Does Something Amazing
0:00:49
What are ohms/Impedance? Matching speakers and amplifiers
Комментарии