BySmu95
Can someone please help me with the task and the calculation method.
A sinusoidal input voltage of 163 mV (peak to peak) is attenuated by 38.5 dB by a linear filter. What is the effective voltage in microvolts at the output of the same filter?
(No Ratings Yet)
Loading...Hi, I bought an LED light yesterday and the packaging said it wasn't suitable for lighting. Can someone please tell me what this means? Thanks in advance. LG. Tikaani
Hello, I have a speaker here (about 10cm diameter) which is an Av509 8 Ohm 5 Watt. I also have an ESP32 Wroom NODEMCU and have already played sounds with it using the internal DAC via an LM386 module. Unfortunately the quality is absolutely terrible. It only plays when I turn the volume control down….
I have attached the error from the event log from the web interface: The WLAN module could not be initialized correctly. Please disconnect the FRITZ!Box from the power supply for a short time and then restart the FRITZ!Box! (#0E01) What can I do now to fix the problem? I have restarted the Fritzbox 7590 several…
Good morning, My top loader has a fault, but I can't find the cause. When I start the program, the lid locks. I hear a click, and it won't open. After about 7 seconds of silence, the indicator light above Start/Pause starts flashing and beeps 3 times. After a few seconds, the "Lock Lid" indicator…
Hello, I'll soon be working in the office in the lighting technology department, and I'm not that familiar with the field yet. Let's say a customer calls and wants to buy a light bulb with a 27mm diameter, meaning the base (?!). He doesn't tell me anything else. What else could I ask him? I'm…
Hello, I'm starting an apprenticeship as an electrical engineer in September and my trainer has advised me to study a lot for vocational school because almost everyone fails in the first year of vocational school (has to repeat it). Can anyone tell me from their own experience what I can learn and how I can…
You have to recruit yourself.
Find the formula for damping on the net. Note: These are tensions and not performances.
Convert the formula to u2.
Rechne u2.
Convert to the effective value.
That’s all I want to do, because we’re not your homeworkers.
I just want to find out how to use or convert the formulas.
I have the result myself.
Thank you for your answer
Write your way of calculation here and the result. Then I’ll check it.
It’s wrong!
Take a closer look at how you deal with log.
And why do you suddenly have any resistance in the bill? You don’t need them, and you don’t know anyone.
Geg:
Top tip = 163 mV
attenuation = 38.5 dB
Ges:
U2
lace tips = tip x 2
lace = lace lace / 2
Peak = 163 mV/2
= 81.5 mV
U Peak = U Effective * 2
U Effective=U tip / 2
U Effective = 81.5 / 2
= 40.75 mV
attenuation = 20 log (U1 / U2)
38,5 dB = 20 log (U1 / U2)
38,5 dB / 20 = Log (U1 / U2)
1,925 = Log (U1 / U2)
10^1,925 = (U1 / U2)
(U1 / U2) = 84,139mV
U1/U2 =R1 + R2 / R2
Unfortunately, I don’t get any further.
Since I don’t know how to keep going.