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How to you make the impedance calculation?


Impedance is the opposition of a circuit to alternating current. It's measured in ohms. To calculate impedance, you must know the value of all resistors and the impedance of all inductors and capacitors, which offer varying amounts of opposition to the current depending on how the current is changing. You can calculate impedance using a simple mathematical formula.

  1. Impedance Z = R or XLor XC(if only one is present)
  2. Impedance in series only Z = ?(R2 + X2) (if both R and one type of X are present)
  3. Impedance in series only Z = ?(R2 + ('XL - XC')2) (if R, XL, and XC are all present)
  4. Impedance in any circuit = R + jX (j is the imaginary number ?(-1))
  5. Resistance R = I / ?V
  6. Inductive reactance XL = 2?ƒL = ?L
  7. Capacative reactance XC = 1 / 2?ƒC = 1 / ?C

Sep 09, 2016 | Office Equipment & Supplies

1 Answer

WORKING ON 2005 CHEVY COLORADO 3.5, SEVERAL CODES, P0030, P0036, P0135, P0141, ODD ALL O2 SENSOR CODES, ANY HING COMMON


Yes there is something in common . Check the fuse # 79 10amp in the underhood fuse box . For O2 sensor , heater power .
The PCM commands the heater ON or OFF to maintain a specific HO2S operating temperature range. The PCM monitors the voltage on the HO2S heater low control circuit for heater fault diagnosis. If the PCM detects that the HO2S heater low control circuit voltage is not within a specified range, DTC P0030 sets for HO2S 1, or DTC P0036 sets for HO2S 2.
So this is not in spec. an it set the other codes !
If the PCM detects that the heater current or the heater calculated resistance is not within an expected range, DTC P0135 sets for HO2S 1
If the PCM detects that the heater current or the heater calculated resistance is not within an expected range, DTC P0141 sets for HO2S 2.

Feb 26, 2015 | 2005 Chevrolet Silverado

1 Answer

Texas instruments manuals


It means your calculator is currently set to measure angles in degrees.

There are three common units to measure angles. A full circle is 360 degrees, or 400 grads, or two pi radians. The results of the trigonometric functions depend on the current measure, just as you'd get different numbers if you measure a person's height in inches, feet, or meters.

Jul 15, 2014 | Texas Instruments TI 30XIIS Scientific...

1 Answer

What is my current rate


Which current are you referring to ??......



If you think of an electrical device as a piece of plumbing, voltage is the amount of water that you send down into the pipe, resistance is the pipe's relative width or narrowness, and current is the speed with which the water flows.
Power measures the water's relative difficulty or ease making its way through the pipe.
You relate all these values to one another using a common set of physics equations known as Ohm's law.
If you need to calculate electricity's current flow, you'll need to have at least two of the three values -- voltage, resistance or power -- listed above.

Calculate current flow using voltage and resistance.
According to Ohm's law, you can express electricity's current in amps as a ratio of its voltage in volts to the resistance of the device it's flowing through in ohms -- I = E/R, respectively.
For example, if you want to know the current flow of 220 V of electricity as it flows through a laptop computer with 80 ohms of resistance, you would simply plug these values into the equation as follows: I = 220/80 = 2.75 amps.
Calculate current flow using power and resistance.
Ohm's law also states that electrical current, "I," is equal to the square root of the power dissipated as it travels through the device divided by that device's resistance.
If a light bulb dissipates 80 watts of power and has a resistance of 55 ohms, you can calculate the electricity's current as follows: I = sqrt(80/55) = sqrt(1.4545) = 1.20 amps.

Calculate current flow using power and voltage.
If you have a space heater which dissipates 420 watts of power when it takes in 120 V of electricity, Ohm's law states you can calculate this electricity's current using the equation "I = P/E." For this example, compute current like so: I =420/120 = 3.5 amps.

http://www.the12volt.com/ohm/ohmslaw.asp

Aug 13, 2013 | Computers & Internet

1 Answer

Reset


You referenced a variable that is not currently defined. For example, you referenced a stat variable when there is no current calculation because a list has been edited, or you referenced a variable when the variable is not valid for the current calculation, such as a after Med-Med.

Jun 06, 2013 | Texas Instruments TI-83 Plus Calculator

1 Answer

Casio HR-150TER calculator fault -E appears on screen & will not print. Thank you


Casio HR-150TER calculator fault -E appears on screen & will not print. Thank you

Dec 21, 2010 | Casio HS10S Calculator

1 Answer

Change Tax+ rate from current 8.25% to new, required 9.25%


http://www.casio.com/support/content/AF64A1AC-193D-4650-A9A9-98BB6FE26CFE#0

How do I program tax rate into my calculator?
Non-printing models (also applies to HR-8TE printing calculator):

1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]


Printing models (except HR-8TE):

1. Have calculator in "print" mode
2. Press [CA]
3. Hold [SET/%] key for about 3 seconds
4. Input the tax rate
5. Press [TAX+]
6. Press [SET/%]

Apr 01, 2009 | Casio MS-80TV Scientific Calculator

4 Answers

Calculate future population


The formula for population growth is:
population * (annual growth rate ^ number of years)

In your example,
6000000000 * (1.01^24) = 7618407891

To get your calculator to perfom the calculation, enter it in the following steps:
Type 6000000000
Press the multiply key
Press the ( key
Type 1.01
Press the yx key (located right above the divide key)
Type 24
Press the ) key
Press the = key

You can reuse this formula, substituting any values you wish for the current population, growth rate, and number of years.

Regards,
Javabytes

Oct 29, 2007 | Texas Instruments TI-30XA Calculator

1 Answer

Kenmore electric dryer throwing breaker


Might not be a dryer problem. Following assumes that the breaker that's going is an overcurrent device (something in place of a fuse - what we in the UK usually call an "MCB") rather than an earth leakage circuit breaker. MCBs often have two trip devices - an electromagnetic trip which protects against major faults, and a thermal backup which protects against chronic overload. It could be that you're cooking the thermal element. How much current is the dryer meant to take? (Calculate by dividing power consumption in watts by supply voltage). Is there anything else coming off the same circuit breaker at the same time? Calculate the current drawn by the other loads, and add them all up. If the total current is more than the rated current of the breaker, not only have you found the likely source of your problem but also you've identified that you are overloading your wiring (finding this out is a good thing, as it gives you the opportunity to stop before you set the place on fire). If the total current is below, but near the rated current of the breaker, then you may have a problem with the breaker itself. Possibilities include inadequate ventilation around it or location in a cabinet which is picking up external heat (both need sorting out urgently) - or it may be that the breaker is old and tired and has gone out of calibration. Investigating any of these needs more skill than it's wise to try to acquire from a stranger on the web. A.

May 24, 2007 | Kenmore 62602 Electric Dryer

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