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106 Threads found on edaboard.com: **Calculate Rms**

You apparently selected wire gauge for the primary winding based on peak current. That's completely wrong. **rms** current is the quantity defining the required gauge. It's also not appropriate to **calculate** wire gauge independent of the core size. You better use a transformer calculator tool, e.g. MDT from EPCOS/TDK, or the values from a trustworthy re

Power Electronics :: 03-01-2017 11:35 :: FvM :: Replies: **5** :: Views: **849**

waveform equations on pg 4 and 5 of the attached show how you can **calculate** ac **rms** current for capacitor for forward converter
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But here also is the website showing a nice calculator
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Power Electronics :: 02-11-2017 15:35 :: treez :: Replies: **3** :: Views: **605**

Please can anyone one help me in calculating the noise in V**rms**. I have got the noise in cadence in uV/sqrtHz now I want to convert the uV/sqrtHz in V**rms**. I have the noise result attached. Do I have to use calculator if yes the how?
I want to **calculate** PSRR in cadence of an OTA. Can any one help me step by step procedure to (...)

Analog Circuit Design :: 01-11-2017 06:24 :: simplsoft :: Replies: **0** :: Views: **685**

Hi,
phase jitter:
* take a number (n) of measured period times
* **calculate** average of all (n) period times
then **calculate**:
134299
this gives the jitter in time
phase(**rms**) = t(**rms**) *360° / (t_avg)
Klaus

RF, Microwave, Antennas and Optics :: 12-08-2016 10:48 :: KlausST :: Replies: **1** :: Views: **916**

Before ordering components you should **calculate** some parameters of the AC/DC part.
- Input **rms** current
- VDC voltage ripple
- Capacitor ripple current (check against datasheet rating)
The input and capacitor current will depend on power grid impedance but is usually quite high in relation to output current. The present rectifier circuit isn

Microcontrollers :: 12-01-2016 16:22 :: FvM :: Replies: **55** :: Views: **4435**

You are asking about a commercial attenuator IC, custom analog chip design or a discrete attenuator circuit?
In case of the commercial product, you'll derive it from datasheet specifications or need to measure it, in all other cases, you can **calculate** the errors if you know all circuit parameters, including parasitic elements.

RF, Microwave, Antennas and Optics :: 11-10-2016 10:08 :: FvM :: Replies: **3** :: Views: **454**

Does your current probe measure peak value or **rms**, or trying to **calculate** that?

Analog Circuit Design :: 10-09-2016 14:26 :: Gorgon :: Replies: **8** :: Views: **1068**

Hi All, would anyone in this forum help me in a noise calculation problem? I post this in a different forum but did not get any answers.
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I have the noise simulation results for a bandgap circuit. Am trying to **calculate** **rms** noise over 0.1Hz to 10Hz but not sure if my calculation is correct.
Here is my results. The left figure and the righ

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 07-21-2016 02:02 :: bhl3302 :: Replies: **0** :: Views: **56**

Hi All, I have the noise simulation results for a bandgap circuit. Am trying to **calculate** **rms** noise over 0.1Hz to 10Hz but not sure if my calculation is correct.
Here is my results. The left figure and the right figure were plotted from the same data. The only difference is that the Y-axis of the right figure is in log-domain.
13

Analog Circuit Design :: 07-13-2016 16:32 :: bhl3302 :: Replies: **0** :: Views: **427**

Hi all,
How do you estimate or **calculate** the peak output power that a 500 W transformer in a push pull inverter can supply.
126649
Thanks

Power Electronics :: 03-02-2016 22:53 :: Lion :: Replies: **6** :: Views: **628**

I am trying to **calculate** **rms** jitter for PLL. Will abs_jitter command in cadence calculator after selecting the clock suffice. The result, I get is absolute jitter. Is it the same as **rms** Jitter.
please advise
regards
-pc

RF, Microwave, Antennas and Optics :: 02-16-2016 11:48 :: pankajpc :: Replies: **1** :: Views: **629**

make your 15v 200ma output be the regulated one. Then you **calculate** your capacitor ripple current from knowledge of the dc output current and the **rms** current in the output diode.....cap ripple current(**rms**) = sqrt(**rms**^2-DC^2).
SEARCH "BRAD SUPPANZ **rms** CURRENT WAVEFORM CALCULATIONS" (sorry about caps)

Power Electronics :: 12-11-2015 22:23 :: treez :: Replies: **1** :: Views: **586**

Another option is to rectify the voltage after transformer. You could measure several samples per half-cycle, and **calculate** the **rms** value. I'm assuming that you don't want the peak value, but the true **rms**.
Would not work:
Drop voltage across diode would affect result.

Microcontrollers :: 10-15-2015 16:31 :: andre_teprom :: Replies: **4** :: Views: **886**

I am simulating a reactive load in LTspice. I got a voltage and current waveform with some phase delay due to reactive nature of the circuit. I want to **calculate** the total power given to the load. I have attached a voltage and current waveform measured across load.
121403

Elementary Electronic Questions :: 09-16-2015 22:27 :: chandresha1 :: Replies: **7** :: Views: **902**

Hi,
Sometimes you have to **calculate** with **rms**, sometimes you have to **calculate** with average.
You know P = U * I.
--> If U or I is considered to be as constant you have to use average.
--> If U and I change in the same magnitude you have to use **rms**. (Twice the voltage gives twice the current)
Example:
* A 12V DC supply, a (...)

Analog Circuit Design :: 08-06-2015 06:49 :: KlausST :: Replies: **5** :: Views: **842**

please write the hspice code to **calculate** the power for the ISI articles

Analog Circuit Design :: 07-25-2015 07:46 :: admiral_v :: Replies: **2** :: Views: **565**

You should **calculate** the **rms** inductor current based on the waveform. Having the **rms** value, to get the copper area you can use the formula A = I / J, where A is the conductor's cross section area, I is the **rms** current and J is the current density. As a rule thumb, J should not exceed 4,5 A/mm?. As lower J goes, fewer are (...)

Power Electronics :: 06-12-2015 14:47 :: ysba :: Replies: **3** :: Views: **723**

Tj max will specify the max junction temp, the device can withstand ... you have to look into the graphs in DS to see what's the allowed **rms** current at this Tj. That means you may not be able run at max power what you need at this temp of junction. Also, with or without heat sink, you can **calculate** what can be the ambient temp for the device operat

Power Electronics :: 03-26-2015 08:52 :: ravindragudi :: Replies: **12** :: Views: **1015**

Apart from Babylonian method (cannot use this) what other algorithms exist that can be implemented in verilog. Requirement is to **calculate** **rms** of a series of 32bit signed numbers

ASIC Design Methodologies and Tools (Digital) :: 03-11-2015 03:45 :: keyboardcowboy :: Replies: **0** :: Views: **834**

Elementary Electronic Questions :: 02-23-2015 12:23 :: Nasser750gx :: Replies: **6** :: Views: **630**