378 Threads found on edaboard.com: Average Power
Perhaps because it could be easiest to manage PFC on the average and predictable power consumption pattern of a mass consumer profile within a spread grid if compared to a punctual site on which just turning on/off determined process will add substantial harmonics at some local part of the utility system.
Elementary Electronic Questions :: 03-20-2017 09:31 :: andre_teprom :: Replies: 10 :: Views: 762
most spectrum analyzers simply measure the power spectral density of the phase noise, and integrated it to show RMS jitter. On the average, it is an accurate calculation.
RF, Microwave, Antennas and Optics :: 03-01-2017 10:21 :: biff44 :: Replies: 3 :: Views: 433
I don´t think it makes sense to perform any calculation on unspecified sample values.
Some do voltage readings with 100Msample/s on a clean DC reference voltage.
Some do 15 minute average readings on 3 phase AC power grid voltage.
Completely different data without
I could upload data of 20ms RMS mains AC voltage readings.
You will see a
Miscellaneous Engineering :: 02-23-2017 16:17 :: KlausST :: Replies: 1 :: Views: 2730
LTspice certainly doesnt make it easy to get the real power.
You certainly didn't think thoroughly.
Plot V(in)*I(in) in a second plane, display average.
I get real power of 45.38 W, apparent power of 77 VA, PF = 0,59.
Power Electronics :: 02-19-2017 10:28 :: FvM :: Replies: 19 :: Views: 898
A lot of the time I am conducting power estimation and I have a TCF file for a specific HLB in a design and would like to extract the average data activity and average clock activity so that I can make correlation study between power estimation from synthesis tool and RFI/RFQ stage power estimation. (...)
ASIC Design Methodologies and Tools (Digital) :: 02-16-2017 09:25 :: aelbad :: Replies: 1 :: Views: 404
took the integral of the instantaneous volt.current products from the start to the finish of a single recharge interval, then divided this by the recharge interval time (900ms) to get the average power over the recharge interval. The scope does this for you. We then divided this power reading by the recharge interval time in order to get the
Power Electronics :: 12-14-2016 06:06 :: FvM :: Replies: 24 :: Views: 1886
I'm using HFSS to model a resonant cavity with a waveguide delivery excited by a 6kW wave port. I would like to calculate the power density (W/cm^3) at every point in the cavity as well as the total average power density.
I have tried using the energy stored in a resonant cavity equation:
Energy stored = (...)
Electromagnetic Design and Simulation :: 12-12-2016 18:52 :: kzeller :: Replies: 0 :: Views: 520
First of all, you're more interested in the average/RMS power required by the system, whereas those numbers are likely peak power. There is no way a car system is actually putting out kW of power rms, that much sound would make it a crowd suppression device. Even 500Wrms is very loud for a car system, so you should be fine (...)
Power Electronics :: 11-17-2016 13:02 :: mtwieg :: Replies: 18 :: Views: 1017
Typical power consumed by a clock tree in the design is around 40-45%
What is the typical or on an average power consumed by combinational logic cells in the design after pnr.
ASIC Design Methodologies and Tools (Digital) :: 11-09-2016 08:46 :: reddvoid :: Replies: 6 :: Views: 791
Just over half a litre of urine is enough for six hours of charge time, which can power a smartphone for three hours.The average toilet break produces around 600ml of
Show your DIY :: 10-19-2016 01:38 :: lusiwei :: Replies: 0 :: Views: 6
Switch mode supply = one that regulates it's output by switching fully ON then fully OFF cyclically, normally at high speed, so that the average output is controlled.
Capacitive power supply = one that uses the reactance of a capacitor as a voltage dropper. It is simple but does not regulate or isolate the output and has a failure mode that usual
Analog Circuit Design :: 07-31-2016 21:07 :: betwixt :: Replies: 3 :: Views: 716
A Lithium battery cell is 3.2V when its load MUST be disconnected and is 4.2V when fully charged and its charging current has automatically dropped to a low amount when the charger MUST be disconnected. Then its average voltage during a discharge is 3.7V.
The boosted output voltage is set with a two-resistors voltage divider so if two of them have
Power Electronics :: 07-25-2016 15:32 :: Audioguru :: Replies: 1 :: Views: 324
The LED lamps, even the dimmable ones, in general do not work very well at low triggering angles. This occurs because these lamps has a very low power consumption, therefore even with the smallest smoothing capacitor it will be not able to sustain an average bright within each cycle of the mains, showing a perceptible scintillation. If you plan to
Hobby Circuits and Small Projects Problems :: 06-20-2016 16:58 :: andre_teprom :: Replies: 11 :: Views: 725
I know the difference of average and peak power, however the total power is different between these two analysis of my design (using the same testbench-full annotation). Does this make sense? If yes, why? If not, where should I place my effort to debug this issue?
ASIC Design Methodologies and Tools (Digital) :: 06-05-2016 12:07 :: kalar :: Replies: 0 :: Views: 554
The resistor is just a Q-killer (snubber) and the average
power it sees will be low at low-ish switching frequencies.
You do want to figure the power at some worst case load
and line condition and frequency, and satisfy yourself about
the rating. I'm pretty sure TI has done a thorough job of
disclaiming any and all responsibility for (...)
Power Electronics :: 05-14-2016 03:07 :: dick_freebird :: Replies: 5 :: Views: 973
in a power report that is like:
Report : averaged power
total nets 415 1.131e-06 Watt
The number 1.131e-06 are the Watt/second?how can i know the time unit?Also if is it possible i would like to know (...)
ASIC Design Methodologies and Tools (Digital) :: 04-05-2016 23:50 :: draser :: Replies: 1 :: Views: 663
So how often does this power on current occur and what is the normal current? From these you can work out what is the average dissipation over a reasonable time. i.e. if you get the surge every 5 mS and the normal dissipation is 110 mW, then it looks bad. if the surge occurs every day and the running power is 50 mW it looks OK. Perhaps you (...)
Analog Circuit Design :: 03-16-2016 16:38 :: chuckey :: Replies: 7 :: Views: 870
To know the inverter power (magnitude and direction), you'll multiply and voltage and current (instantaneous power) and average the product. Under circumstances, it's sufficient to form sign(P) = sign(V) xor sign (I), needs only two comparators.
The inverter can also "source" or "sink" reactive power, in this case sign (...)
Professional Hardware and Electronics Design :: 03-06-2016 08:32 :: FvM :: Replies: 9 :: Views: 875
The class d is almost certain to have some input capacitance with it..make sure you do your full bridge stability testing with this input capacitor in there taken account of aswell.
You may find that your average power draw is much much less than your peak power draw.
You may be able to cheat on your transformer winding thickness?s if the (...)
Power Electronics :: 01-26-2016 16:28 :: treez :: Replies: 6 :: Views: 737
The key based on STM8L+nRF24L01 works from CR2032 200mAh battery for a 6 years. Transmit data every 2 seconds.
Although the average current consumption (3.5 ?A) doesn't exactly fit the previous assumptions (nRF24L01 takes 28-30mA for ~0.5ms during TX, makes already 7.5 ?A), I agree with the order of magnitude. It's well manageable
Microcontrollers :: 01-25-2016 18:24 :: FvM :: Replies: 23 :: Views: 2336
Some inverters have square wave outputs, but its still the RMS value that is important for power measurement.
Then the average power for what is used for ?
Power Electronics :: 01-25-2016 01:39 :: CataM :: Replies: 4 :: Views: 382
average in linear numbers, not dB.
If H and V is measured in an anechoic environment is gain for a small antenna in each measured direction: √(H?+V?).
Integration of gain for full sphere gives total radiated power.
Abs. ant.eff. %= (Radiated power*100)/(Tx power-Reflected power)
Realized ant.eff. is (...)
RF, Microwave, Antennas and Optics :: 01-12-2016 04:07 :: E Kafeman :: Replies: 3 :: Views: 533
Hi all, for an experiment I want to do I'm trying to find coaxial isolators for operation at 123MHz. Bandwidth is narrow (<1MHz), peak forward power is up to 100W, average power is 10W. I don't need incredibly good performance, 0.5dB of insertion loss and 15dB isolation would be fine. Unfortunately the frequency is not negotiable. I'd (...)
RF, Microwave, Antennas and Optics :: 01-09-2016 13:28 :: mtwieg :: Replies: 0 :: Views: 436
average power can be expressed as the real part of the product of voltage and current in either time or frequency.
This means you can use superposition for each frequency.
Elementary Electronic Questions :: 01-01-2016 01:17 :: vGoodtimes :: Replies: 1 :: Views: 657
Output :80V 0.65A implies 52W average , 123 Ohms average is DC resistive load, otherwise you must specify.!!
Assume 80~90% efficiency unless extra effort, cost in selection of DC-DC design.
Assume input power = 60W @3.3V means 18.2A average and surge may be much higher if non R load, also in startup unless soft (...)
Analog Circuit Design :: 12-29-2015 16:07 :: SunnySkyguy :: Replies: 2 :: Views: 590
1st what are your specs for power, water clarity or attenuation with distance, and diode pulse power peak/average.
As power rating increases , ESR drops at If and diode capacitance rises by same degree at 0V which affects modulation rise time.
Group delay distortion and dispersion affects ISI , inter-symbol-interference (...)
Hobby Circuits and Small Projects Problems :: 11-27-2015 15:55 :: SunnySkyguy :: Replies: 6 :: Views: 1081
It is not the average power but peak power that counts then the impedance that represents compared to pin inductance (nH) and step rise time which represents an apparent frequency of interest usually up to 2/Tr.
For uW peak power , that is very high impedance.
For peak power in Watts then series inductance (...)
Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-20-2015 19:37 :: SunnySkyguy :: Replies: 5 :: Views: 847
power of TV transmitter for PAL system is defined as PEP during the horisontal sync. average power reading is no good because PEP is constant regardless of picture content.
Chip i no good.
RF, Microwave, Antennas and Optics :: 08-07-2015 15:54 :: Borber :: Replies: 6 :: Views: 654
If we test a chip, and saying it has a power consumption of 1mW.
Assume the supply vdd is 1V, so the current consumption is 1mA.
My question is whether the current here is rms or average current? Thanks.
Analog Circuit Design :: 08-06-2015 03:40 :: shanmei :: Replies: 5 :: Views: 797
hi friends .I have a simple question, that amount is to be brought in the papers what kind of power? The average or maximum?
Analog Circuit Design :: 07-23-2015 19:48 :: admiral_v :: Replies: 2 :: Views: 562
Convert load to Watt-hours and decide on t in fraction of an hour, H and then size the battery based on cost and Watt-hours capacity using
power avail = Vavg*Ah
duration ~ Vavg*Ah / average load power
~ Ah rating for similar duration divided by load current.
keep in mind that Ah drops in capacity from 20C to C to C/20 as ratings
Robotics and Automation Forum :: 07-15-2015 21:30 :: SunnySkyguy :: Replies: 3 :: Views: 862
If we consider a CDMA system with N users with average transmit power P each, how can we write the received SNR at the receiver for each user as a function of average transmit power P, aggregate interference from other users I, additive noise n, and spreading factor G?
Digital communication :: 06-02-2015 19:05 :: David83 :: Replies: 0 :: Views: 631
I believe you can't connect ADE7757 directly to a wireless module. You will need an MCU to interface ADE7757 with an wireless module.
The ADE7757 supplies average real power information on the low frequency outputs F1 and F2. These outputs may be used to directly drive an electromechanical counter or interface with an MCU.
MCU will make Energy Me
Microcontrollers :: 05-29-2015 11:14 :: Ishaan Karnik :: Replies: 1 :: Views: 574
This would seem to be a pretty common question so I'm surprised I can't find any information on it. This makes me think I might not be thinking clearly.
Anyway, how do I calculate the total RF energy in a spectral range? Peak and average power is easy, but how do I calculate total power (you can't just add them)?
Here are the (...)
RF, Microwave, Antennas and Optics :: 05-16-2015 01:40 :: Synaps3 :: Replies: 1 :: Views: 618
a random Rayleigh flat-fading channel
object based on Jake?s model is generated in MATLAB
with sampling period of 10 μs and the maximum Doppler
shift is set to 200 Hz. The additive white Gaussian noise with
SNR of 23 dB is used. The required BER is set to 10−3 and
the average transmit power is fixed at 0.2 W.
Two independent simula
Digital communication :: 05-03-2015 10:15 :: Md Shareef :: Replies: 0 :: Views: 557
i want to measure AC RMS. i suppose ac rms is used to measure active power.
Nope. To measure active power, you'll multiply instantaneous values of I and V and average the product.
Microcontrollers :: 05-02-2015 07:17 :: FvM :: Replies: 9 :: Views: 544
Hello all ;*
I*need to knew, *what are*the specifications SONET for 10Gb/s , *for exemple:
1- The variation of the averge power at the output ,
2-*What gain request the*trasimpedance amplifier
3- What current photodiode must produce in ?A
Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 04-18-2015 12:43 :: So.nia :: Replies: 0 :: Views: 459
2) average power consumed by the load as a result of the fundamental.
This is tricky. The AC overlaps the DC component. Therefore some power is due to the AC portion, and some to the DC component.
Performing a thought experiment...
If there was no DC component, then all the power would entirely be due to the fun
Education :: 04-08-2015 02:48 :: BradtheRad :: Replies: 4 :: Views: 1456
I'm a bit confused.
I'm measuring the efficiency of my off-line 230 V flyback converter.
I sampled the mains voltage Vin which is a sinus wave.
I sampled the Input current flowing from the mains into the converter which is a non linear curve.
To evaluate the efficiency I need to evaluate the input power.
Power Electronics :: 03-14-2015 09:41 :: edaenrico :: Replies: 2 :: Views: 503
average gives zero so we are going for rms.
Yes. averaged rectified value also works for AC measurement and is often used. But it's not equal to "heating power" (post #3) for distorted waveforms.
Elementary Electronic Questions :: 02-25-2015 15:42 :: FvM :: Replies: 6 :: Views: 605
You should first tey and find the threat source or info
about it (if this is a field return).
Then, what you mean by "burned out" along with what
you know about the event, may lead you somewhere.
Those zeners / TVSes have peak current and short term
average current and short/medium term power limits. An
ESD event of classical form is ver
Analog Circuit Design :: 02-23-2015 16:56 :: dick_freebird :: Replies: 3 :: Views: 490
- AC devices go by suggested equivalent breaker rating at full load. (RMS)
- DC device go by steady state full load (RMS) not average or typical.
Elementary Electronic Questions :: 02-12-2015 01:33 :: SunnySkyguy :: Replies: 2 :: Views: 439
The quick answer is because ;
- potentials and electric fields are averaged while currents and fluxes are summed.
Like a bunch of same cell voltage batteries in parallel gives the average voltage but the max current capacity adds ( don't try this on LiPo unless <=2% matched)
Thus vc = ?(vp + vn) ....
thus the co
RF, Microwave, Antennas and Optics :: 01-12-2015 13:21 :: SunnySkyguy :: Replies: 4 :: Views: 695
One needs to know;
Input DC voltage range
Output avg. AC voltage range
power Factor of load and peak current demand of load ( e.g. if nonlinear rectified AC to DC, peak current can be 3x~10x Avg. ) or motor surge can be 5~8x average )
Thermal resistance of your mechanical heatsink design Rca=1 to 3 deg/w if forced air cooled
Power Electronics :: 12-03-2014 07:36 :: SunnySkyguy :: Replies: 4 :: Views: 990
I think P3dB remarks that the 3dB CW power compression point and it should be peak power. Peak-to-average ratio of the input signal should be taken into account to define the right operating point for this PA.
RF, Microwave, Antennas and Optics :: 11-27-2014 19:00 :: BigBoss :: Replies: 2 :: Views: 1289
A lithium battery in a smartphone is about 3.2V when it needs to be disconnected and charged and is 4.2V when it is fully charged. Then its average voltage is 3.7V. It can supply a very high current for a short duration but its capacity is about 2800mAh for a Galaxy S5 phone (all the batteries are different).
A Lithium battery must have a circuit
Elementary Electronic Questions :: 11-19-2014 14:46 :: Audioguru :: Replies: 1 :: Views: 721
I wrote my code OFDM system, now I want to calculate PAPR of my OFDM system for kk = 1:nsym
peakpwer_ofdm(kk) = max(abs(ser_data(nsym,:)).^2);
% average power
averagepower_ofdm(kk) = mean(abs(ser_data(nsym,:)).^2) ;
PAPR_ofdm(kk) = peakpwer_ofdm/averagepower_ofdm ;
I use (...)
Digital communication :: 11-18-2014 13:42 :: kashifrao :: Replies: 0 :: Views: 1159
Reference previous thread:
I have the same problem.
I use the calculator to calculate average power : average(VT("/vdd!")*IT("/V0/PLUS"))
And I use the exact command in the ocean script. But the results are different.
Software Problems, Hints and Reviews :: 11-09-2014 04:00 :: el.sadredini :: Replies: 0 :: Views: 723
I am doing my project using Tanner EDA in S-Edit for low power double-tail comparator. I have obtained the average power after simulation of the circuit. The average power obtained was like "3.633853e-003 watts" . How to calculate this and obtain the power consumed in (...)
Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-28-2014 16:03 :: Stephi J :: Replies: 0 :: Views: 1475
There are two definitions for these kind of signals.
"Peak power" and "average power".Modern SA's can calculate these powers easily.
But "Peak to average" value should be mentioned in its specifications in dB.
RF, Microwave, Antennas and Optics :: 10-22-2014 01:37 :: BigBoss :: Replies: 7 :: Views: 2774