Friday, May 31, 2013

Rj14 Rj11 Pinouts

Rj11 Wiring on Telephone Wiring Full Screenshot   Telephone Wiring Demo
Telephone Wiring Full Screenshot Telephone Wiring Demo.


Rj11 Wiring on Telecom Tips   Wiring Your Home For Voip Service   O Reilly Emerging
Telecom Tips Wiring Your Home For Voip Service O Reilly Emerging.


Rj11 Wiring on Rj 11 4 Pair Phone Wiring Color Codes And Diagram   Circuit Schematic
Rj 11 4 Pair Phone Wiring Color Codes And Diagram Circuit Schematic.


Rj11 Wiring on Rj11 Wiring
Rj11 Wiring.


Rj11 Wiring on Uk Telephone Wiring
Uk Telephone Wiring.


Rj11 Wiring on Cat 5 Wiring
Cat 5 Wiring.


Rj11 Wiring on Build An X 10 Status Display   The Statx10
Build An X 10 Status Display The Statx10.


Rj11 Wiring on Rj 11 Definition Of Rj 11 In The Free Online Encyclopedia
Rj 11 Definition Of Rj 11 In The Free Online Encyclopedia.


Rj11 Wiring on Rj14 And Rj11 Pinouts
Rj14 And Rj11 Pinouts.


Rj11 Wiring on Cable Modem With Either Airport Extreme Or Time Capsule   Macrumors
Cable Modem With Either Airport Extreme Or Time Capsule Macrumors.


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Free Download Gibson Wiring Diagram Schematiccircuit

Guitar Wiring Diagram on Basic Electric Guitar Circuits  Part 3    Workbenchfun Com
Basic Electric Guitar Circuits Part 3 Workbenchfun Com.


Guitar Wiring Diagram on Stratocaster Guitar Set Up Wiring Diagram Gif
Stratocaster Guitar Set Up Wiring Diagram Gif.


Guitar Wiring Diagram on Here Is A Wiring Diagram Of My Electric Guitar That Shows All Wires
Here Is A Wiring Diagram Of My Electric Guitar That Shows All Wires.


Guitar Wiring Diagram on Humbuckers With 5 Way Switching Guitar Wiring   Circuit Schematic
Humbuckers With 5 Way Switching Guitar Wiring Circuit Schematic.


Guitar Wiring Diagram on Diagram Showing The Wiring Of A Gibson Les Paul Electric Guitar
Diagram Showing The Wiring Of A Gibson Les Paul Electric Guitar.


Guitar Wiring Diagram on How To Wiring  Gibson Les Paul Guitar Schematic Diagram   How To Tips
How To Wiring Gibson Les Paul Guitar Schematic Diagram How To Tips.


Guitar Wiring Diagram on Free Download Of Gibson Wiring Diagram And Schematic   Circuit
Free Download Of Gibson Wiring Diagram And Schematic Circuit.


Guitar Wiring Diagram on Here Are Some Diagrams Of Electric Guitar Wiring
Here Are Some Diagrams Of Electric Guitar Wiring.


Guitar Wiring Diagram on Rhythmic Gymnastics Photos  Guitar Wiring Diagram
Rhythmic Gymnastics Photos Guitar Wiring Diagram.


Guitar Wiring Diagram on Coil Splitting Seymour Duncan Wiring Diagram 460 100 460 70 Jpg
Coil Splitting Seymour Duncan Wiring Diagram 460 100 460 70 Jpg.


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Bosch Alternatorinternal Circuits

Alternator Wiring Diagram on Jam S Tiger Avon  Wiring A Nippon Denso Alternator
Jam S Tiger Avon Wiring A Nippon Denso Alternator.


Alternator Wiring Diagram on Alternator Wiring Diagram   1978 80 Vehicles
Alternator Wiring Diagram 1978 80 Vehicles.


Alternator Wiring Diagram on Chevy Truck Under Hood Wiring Diagram
Chevy Truck Under Hood Wiring Diagram.


Alternator Wiring Diagram on About Honda Cb400 And Cb450 Wiring Diagram And Schematics Here
About Honda Cb400 And Cb450 Wiring Diagram And Schematics Here.


Alternator Wiring Diagram on Garden Tractor Wiring Diagram Parts List Manual Parts Book
Garden Tractor Wiring Diagram Parts List Manual Parts Book.


Alternator Wiring Diagram on Lexus Sc400 Charging Circuit And Wiring Diagram   Circuit Schematic
Lexus Sc400 Charging Circuit And Wiring Diagram Circuit Schematic.


Alternator Wiring Diagram on Hilux Pickup Power Window Control System Connectors And Wiring Diagram
Hilux Pickup Power Window Control System Connectors And Wiring Diagram.


Alternator Wiring Diagram on Alternator Wiring Diagrams  1g  2g  And 3g
Alternator Wiring Diagrams 1g 2g And 3g.


Alternator Wiring Diagram on 1997 Chevrolet Malibu Wiring Diagram And Electrical System   Circuit
1997 Chevrolet Malibu Wiring Diagram And Electrical System Circuit.


Alternator Wiring Diagram on Of This Bosch Alternator S Internal Circuits Is Given Below
Of This Bosch Alternator S Internal Circuits Is Given Below.


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Wednesday, May 29, 2013

2SC5200 and 2SA1943 high fidelity power transistor

2SC5200 and 2SA1943 transistor amplifier
Here are two transistors manufactured by Toshiba. 2SC5200 and 2SA1943 transistor pair has been widely applied or used in the amplifier power amplifier because the transistor has a large power, and also not too expensive than other large power transistors. This transistor has the advantage of High breakdown voltage: VCEO = 230 V (min), Suitable for use in 100-W high fidelity audio amplifiers output stage. For more information, please see datasheet below.


Maximum Ratings (Tc = 25°C)


datasheet 2sc5200 and 2sa1943

Electrical Characteristics (Tc = 25°C)


characteristics transistor 2SC5200 and 2sa1943
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Tuesday, May 28, 2013

12V Flashing Lamp Circuit Diagram

This is good news for vehical lovers.This is 12V Flashing lamp circuit.Yuo can use this circuit for your vehical.Here I have used IC LM317T.

Note
# Build this on a PCB
# This circuit operates with 12V power supply.
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Monday, May 27, 2013

Home Smart Cabling Integrate Cabling Existing Home

Home Wiring on The Figure Shows The Ring System Of Electric Wiring  Wiring Starts
The Figure Shows The Ring System Of Electric Wiring Wiring Starts.


Home Wiring on Solar Powered House Wiring
Solar Powered House Wiring.


Home Wiring on Slim Films House Illustrations
Slim Films House Illustrations.


Home Wiring on House Wiring Dsl By Kissel
House Wiring Dsl By Kissel.


Home Wiring on Electrical Wiring In The Home  Existing Nutone 665rsp Wiring
Electrical Wiring In The Home Existing Nutone 665rsp Wiring.


Home Wiring on Home Wiring Video Distribution   Catv   Tv   Dbs
Home Wiring Video Distribution Catv Tv Dbs.


Home Wiring on House Plans And Home Designs Free    Blog Archive    Home Wiring
House Plans And Home Designs Free Blog Archive Home Wiring.


Home Wiring on Italy Rome Weather Density Of 40 Sodium Hydroxide Solution
Italy Rome Weather Density Of 40 Sodium Hydroxide Solution.


Home Wiring on Home Wiring Video Distribution   Catv
Home Wiring Video Distribution Catv.


Home Wiring on New Home For Smart Cabling Or Integrate Cabling In Your Existing Home
New Home For Smart Cabling Or Integrate Cabling In Your Existing Home.


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Sunday, May 26, 2013

Motor Starting

The worked example here is a very simple power system with two voltage levels and supplied by a single generator. While unrealistic, it does manage to demonstrate the key concepts pertaining to motor starting calculations.

Step 1: Construct System Model and Collect Equipment Parameters

Simplified system model for motor starting example

The power system has two voltage levels, 11kV and 415V, and is fed via a single 4MVA generator (G1). The 11kV bus has a standing load of 950kVA (S1) and we want to model the effects of starting a 250kW motor (M1). There is a standing load of 600kVA at 415V (S2), supplied by a 1.6MVA transformer (TX1). The equipment and cable parameters are as follows:
Equipment Parameters
Generator G1
  •  S_{g1} , = 4,000 kVA
  •  V_{g1} , = 11,000 V
  •  chi_{d}^{} , = 0.33 pu
  •  cos phi , = 0.85 pu
Generator Cable C1
  • Length = 50m
  • Size = 500 mm2
(R = 0.0522 Ωkm, X = 0.0826 Ωkm)
11kV Standing Load S1
  •  S_{s1} , = 950 kVA
  •  V_{s1} , = 11,000 V
  •  cos phi , = 0.84 pu
Motor M1
  •  P_{m1} , = 250 kW
  •  V_{m1} , = 11,000 V
  •  I_{LRC} , = 106.7 A
  •  I_{LRC}/I_{FLC} , = 6.5 pu
  •  cos phi_{m} , = 0.85 pu
  •  cos phi_{s} , = 0.30 pu
Motor Cable C2
  • Length = 150m
  • Size = 35 mm2
(R = 0.668 Ωkm, X = 0.115 Ωkm)
Transformer TX1
  •  S_{tx1} , = 1,600 kVA
  •  V_{t1} , = 11,000 V
  •  V_{t2} , = 415 V
  •  u_{k} , = 0.06 pu
  •  P_{kt} , = 12,700 W
  •  t_{p} , = 0%
Transformer Cable C3
  • Length = 60m
  • Size = 120 mm2
(R = 0.196 Ωkm, X = 0.096 Ωkm)
415V Standing Load S2
  •  S_{s2} , = 600 kVA
  •  V_{s2} , = 415 V
  •  cos phi , = 0.80 pu

Step 2: Calculate Equipment Impedances

Using the patameters above and the equations outlined earlier in the methodology, the following impedances were calculated:
Equipment Resistance (Ω) Reactance (Ω)
Generator G1 0.65462 9.35457
Generator Cable C1 0.00261 0.00413
11kV Standing Load S1 106.98947 69.10837
Motor M1 16.77752 61.02812
Motor Cable C2 0.1002 0.01725
Transformer TX1 (Primary Side) 0.60027 4.49762
Transformer Cable C3 0.01176 0.00576
415V Standing Load S2 0.22963 0.17223

Step 3: Referring Impedances

11kV will be used as the reference voltage. The only impedance that needs to be referred to this reference voltage is the 415V Standing Load (S2). Knowing that the transformer is set at principal tap, we can calculate the winding ratio and apply it to refer the 415V Standing Load impedance to the 11kV side:
 n = frac{415 left( 1 + 0% 
<br />ight)}{11,000} = 0.03773 ,
The resistance and reactance of the standing load referred to the 11kV side is now, R = 161.33333 Ω and X = 121.00 Ω.

Step 4: Construct the Equivalent Circuit

Equivalent circuit for motor starting example
The equivalent circuit for the system is shown in the figure to the right. The "Near" Thevenin equivalent circuit is also shown, and we now calculate the equivalent load impedance  Z_{eq} , in the steady-state condition (i.e. without the motor and motor cable impedances included):
 Z_{eq} = Z_{C1} + left[ Z_{S1} || left( Z_{C3} + Z_{TX1} + Z_{S2} 
<br />ight) 
<br />ight] ,
 = 64.59747 + j 44.80458 ,
Similarly the equivalent load impedance during motor starting (with the motor impedances included) can be calculated as as follows:
 Z_{eq,s} = Z_{C1} + left[ Z_{S1} || left( Z_{C3} + Z_{TX1} + Z_{S2} 
<br />ight) || Z_{C2} + Z_{M1} 
<br />ight] ,
 = 20.371997 + j 31.22116 ,

Step 5: Calculate the Initial Source EMF

"Near" Thevenin equivalent circuit for motor starting example
 
 
Assuming that there is nominal voltage at the 11kV bus in the steady-state condition, the initial generator emf can be calculated by voltage divider:
 E_{0} = V_{n} left( 1 + frac{Z_{G1}}{Z_{eq}} 
<br />ight) ,
 = 11,821.25 + j 1,023.33 = 11,865 , Vac

Step 6: Calculate System Voltages During Motor Start

Now we can calculate the transient effects of motor starting on the system voltages. Firstly, the current supplied by the generator during motor start is calculated:
 I_{G1} = frac{E_{0}}{Z_{eq,s} + Z_{G1}} ,
 = 138.8949 - j 219.36166 = 259.64A ,
Next, the voltage at the 11kV bus can be found:
 V_{11kV} = E_{0} - I_{G1} ( Z_{G1} + Z_{C1} ) ,
 = 9,677.024 - j 132.375 = 9,677.9 , Vac (or 87.98% of nominal voltage)
The voltage at the motor terminals can then be found by voltage divider:
 V_{M1} = V_{11kV} frac{Z_{M1}}{Z_{C2} + Z_{M1}} ,
 = 9,670.597 - j 118.231 = 9,671.3 , Vac (or 87.92% of nominal voltage)
The voltage at the low voltage bus is:
 V_{415V} = V_{11kV} frac{Z_{S2}}{Z_{C3} + + Z_{TX1} + Z_{S2}} ,
 = 9,521.825 - j 280.698 = 9,525.6 , Vac, then referred to the LV side = 359.39Vac (or 86.60% of nominal voltage)
Any other voltages of interest on the system can be determined using the same methods as above.
Suppose that our maximum voltage drop at the motor terminals is 15%. From above, we have found that the voltage drop is 12.08% at the motor terminals. This is a slightly marginal result and it may be prudent to simulate the system in a software package to confirm the results.
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