Rangoli designs for diwali 2017 |easy rangoli design | unique rangoli de...

Rangoli designs for Diwali 2017,Easy Rangoli for Competition

How to make 5v DC Power Supply using 7805 | How to Convert AC TO DC

Hello friends i will back with 230 to 5v power supply with simple Transformer, bridge rectifier, and 7805. here you can find 5v power supply circuit and how to make 5v power supply with soldering and placement.

Please Like + Share + Subscribe to our Channel : https://goo.gl/3h1HJq

Also you can make 230 to 12v using 7812, 230 to 9v using 7809.

To assemble the LED lamp we’ll need:
Aluminum lamp housing
light-emitting diodes : http://amzn.to/2oKv9eS
soldering iron: http://amzn.to/2oxTJNS
multimeter : http://amzn.to/2oBLSRb
screwdriver: http://amzn.to/2p4XDkn
solder: http://amzn.to/2oy1kMn
hot glue. http://amzn.to/2oy4GPL, http://amzn.to/2oBwswi

Try and assemble by yourself this very promising and cost-effective light source.

YOUTUBE Channel : https://goo.gl/3h1HJq
Like on FACEBOOK : https://goo.gl/dzTCmA
Follow on twitter : https://goo.gl/hhrcQ9
Blogspot : http://techmoinnovation.blogspot.in


Also Watch video :
LED Flash light from old CFL lamp :https://goo.gl/Vcqi22
LED lights bulb from old CFL lamp :https://goo.gl/ccHxnl
LED Flashlight Torch | DIY LED Torch :https://goo.gl/aqY9yc
Repair Power bank at Home : https://goo.gl/XoFgrq
Fake Vs Original Power bank inside : https://goo.gl/iJpKnz
HYBRID SIM SLOT : https://goo.gl/6J8sBv
HOW TO USE HYBRID SIM SLOT : https://goo.gl/yRTuV0
Magnetic Charging Cable :https://goo.gl/tzLdCP
Transformer Less Power supply :https://goo.gl/bUE6Ta
LENOVO K6 POWER UNBOXING IN HINDI : https://goo.gl/KSeI7t
WhatsApp new upcoming update of 2017 : https://goo.gl/Gp5wYU
Best Free Video Editor App Android : https://goo.gl/lmBgxh
TOP 5 FREE BEST Android Apps 2017 : https://goo.gl/Cnjp8W
Xiaomi Redmi Note 4 Specifications : https://goo.gl/nyknWf


Also you should know :
What is Transformer?
A transformer is used to lower the mains voltage, and also to limit the current. In this power supply, we use a capacitor and a resistor, that together form an impedance that lowers the current from the mains. The voltage is set by a bridge rectifier that includes two zener diodes that set the voltage to a desired value.

7805 is a 5V fixed three terminal positive voltage regulator IC. The IC has features such as safe operating area protection, thermal shut down, internal current limiting which makes the IC very rugged.

ATTESTATION FORM in word and PDF

ATTESTATION FORM in word: Download Here

ATTESTATION FORM in PDF: Download Here

how to make 5 Watt LED Flash Light bulb from old CFL lamp at home | DIY ...

Convert your old CFL Lamp in to LED Flash light Lamp by simple Tools and Circuit.
Please Like + Share + Subscribe to our Channel : https://goo.gl/3h1HJq

You don’t need any special skills to assemble a LED Flash lamp.
Five minutes of free time, a few tools and some desire to make something by yourself - that's all you need to build a modern, beautiful and efficient light source. This video shows you full detail making of high luminescence , High power Led Light.


To assemble the LED lamp we’ll need:
Aluminum lamp housing
light-emitting diodes : http://amzn.to/2oKv9eS
soldering iron: http://amzn.to/2oxTJNS
multimeter : http://amzn.to/2oBLSRb
screwdriver: http://amzn.to/2p4XDkn
solder: http://amzn.to/2oy1kMn
hot glue. http://amzn.to/2oy4GPL, http://amzn.to/2oBwswi

Try and assemble by yourself this very promising and cost-effective light source.

YOUTUBE Channel : https://goo.gl/3h1HJq
Like on FACEBOOK : https://goo.gl/dzTCmA
Follow on twitter : https://goo.gl/hhrcQ9
Blogspot : http://techmoinnovation.blogspot.in


Also Watch video :
LED lights bulb from old CFL lamp :https://goo.gl/ccHxnl
LED Flashlight Torch | DIY LED Torch :https://goo.gl/aqY9yc
Repair Power bank at Home : https://goo.gl/XoFgrq
Fake Vs Original Power bank inside : https://goo.gl/iJpKnz
HYBRID SIM SLOT : https://goo.gl/6J8sBv
HOW TO USE HYBRID SIM SLOT : https://goo.gl/yRTuV0
Magnetic Charging Cable :https://goo.gl/tzLdCP
Transformer Less Power supply :https://goo.gl/bUE6Ta
LENOVO K6 POWER UNBOXING IN HINDI : https://goo.gl/KSeI7t
WhatsApp new upcoming update of 2017 : https://goo.gl/Gp5wYU
Best Free Video Editor App Android : https://goo.gl/lmBgxh
TOP 5 FREE BEST Android Apps 2017 : https://goo.gl/Cnjp8W
Xiaomi Redmi Note 4 Specifications : https://goo.gl/nyknWf

How to Repair Power bank at Home | Life Hack PowerBank | How to fix powe...

This video will show you how to repair power banks with some simple tools and replacing few components.

Power bank has two parts:

1.battery unit

2. Circuit.



In my case batteries was working fine but circuit of powerbank was faulty so i replaced it and done.some times the batteries inside the power bank are dead, so just remove them out and replace it with new one.and give a new life to your cell phone powerbanks.

You can replace new batteries for full capacity of power bank.

Capacity of Power Banks Measured in "mah" (milli ampere hours)



you can also use same trick (life hack) for  Ambrane powerbank, MI powerbank , Samsung powerbank , Intel powerbank too.



Some Power banks:

Mi 20000mAH Power Bank 2: http://amzn.to/2w4LwWZ

Intex IT-PBA 20K Poly 20000mAH Power Bank:http://amzn.to/2wEs3xU

Intex IT-PB11K 11000mAH Power Bank: http://amzn.to/2xj8CYC

Ambrane P-1122 10000mAH Power Bank: http://amzn.to/2wMFDyb

Ambrane P-1310 13000mAH Power Bank: http://amzn.to/2wEkxCU

Ambrane P-1111 10000mAH Power Bank: http://amzn.to/2xiJpxj

Ambrane Ambrane Power Bank P-2000 (20,800Mah ): http://amzn.to/2wEaf5T



Some tools  we’ll need:

soldering iron(http://amzn.to/2oxTJNS)

multimeter(http://amzn.to/2oBLSRb)

screwdriver(http://amzn.to/2p4XDkn)

solder(http://amzn.to/2oy1kMn)

hot glue.(http://amzn.to/2oy4GPL,http://amzn.to/2oBwswi)



YOUTUBE Channel : https://goo.gl/3h1HJq

Like on FACEBOOK : https://goo.gl/dzTCmA

Follow  on twitter    : https://goo.gl/hhrcQ9

Blogspot                   : http://techmoinnovation.blogspot.in



Also Watch video :

Fake Vs Original Power bank inside: https://goo.gl/iJpKnz

HOW TO USE 2 SIM + 1 MEMORY CARD IN HYBRID SIM SLOT : https://goo.gl/6J8sBv

HOW TO USE HYBRID SIM SLOT                   : https://goo.gl/yRTuV0

Magnetic Charging Cable                                :https://goo.gl/tzLdCP

LED lights bulb from old CFL lamp                :https://goo.gl/ccHxnl

Transformer Less Power supply                    :https://goo.gl/bUE6Ta

LENOVO K6 POWER UNBOXING IN HINDI   : https://goo.gl/KSeI7t

WhatsApp new upcoming update of 2017  : https://goo.gl/Gp5wYU

Best Free Video Editor App Android             : https://goo.gl/lmBgxh

TOP 5 FREE BEST Android Apps 2017        : https://goo.gl/Cnjp8W

Xiaomi Redmi Note 4 Specifications            : https://goo.gl/nyknWf

LED Flashlight Torch | DIY LED Torch           :https://goo.gl/aqY9yc

Magnetron Working

How Magnetron  Works:

Working of Megnetron:

Fake Vs Original Power bank inside and price difference | How to repair ...

Fake Vs Original Power bank inside and price difference | How to repair Power bank charger 

Hi friends
Now a Days we need extra battery backup for their smartphones and many peoples bought power bank for that purpose.But the question arise here is that how we know that any power bank is real or fake .This Video will show you what is inside the power bank. and how can you repair it. Also the Difference between original and face power banks power.

Some Power banks:
Mi 20000mAH Power Bank 2: http://amzn.to/2w4LwWZ
Intex IT-PBA 20K Poly 20000mAH Power Bank:http://amzn.to/2wEs3xU
Intex IT-PB11K 11000mAH Power Bank: http://amzn.to/2xj8CYC
Ambrane P-1122 10000mAH Power Bank: http://amzn.to/2wMFDyb
Ambrane P-1310 13000mAH Power Bank: http://amzn.to/2wEkxCU
Ambrane P-1111 10000mAH Power Bank: http://amzn.to/2xiJpxj
Ambrane Ambrane Power Bank P-2000 (20,800Mah ): http://amzn.to/2wEaf5T

Some tools we’ll need:
soldering iron(http://amzn.to/2oxTJNS)
multimeter(http://amzn.to/2oBLSRb)
screwdriver(http://amzn.to/2p4XDkn)
solder(http://amzn.to/2oy1kMn)
hot glue.(http://amzn.to/2oy4GPL,http://amzn.to...)

YOUTUBE Channel : https://goo.gl/3h1HJq
Like on FACEBOOK : https://goo.gl/dzTCmA
Follow on twitter : https://goo.gl/hhrcQ9
Blogspot : http://techmoinnovation.blogspot.in 

Also Watch video :

HOW TO USE 2 SIM + 1 MEMORY CARD IN HYBRID SIM SLOT : https://goo.gl/6J8sBv
HOW TO USE HYBRID SIM SLOT : https://goo.gl/yRTuV0
Magnetic Charging Cable :https://goo.gl/tzLdCP
LED lights bulb from old CFL lamp :https://goo.gl/ccHxnl
Transformer Less Power supply :https://goo.gl/bUE6Ta
LENOVO K6 POWER UNBOXING IN HINDI : https://goo.gl/KSeI7t
WhatsApp new upcoming update of 2017 : https://goo.gl/Gp5wYU
Best Free Video Editor App Android : https://goo.gl/lmBgxh
TOP 5 FREE BEST Android Apps 2017 : https://goo.gl/Cnjp8W
Xiaomi Redmi Note 4 Specifications : https://goo.gl/nyknWf
LED Flashlight Torch | DIY LED Torch :https://goo.gl/aqY9yc

LED Flashlight Torch | DIY LED Torch | How to make Super bright LED light

LED Flashlight Torch | DIY LED Torch | How to make Super bright LED light |Homemade LED Flash light 

Make a super bright LED light very easily at home. This  video is about how to make a portable  Mini LED Flashlight  with simple components.The LED light has very high intensity and glows too much. Portable LED Light with only two components. No need reflector required  for this mini flashlight.

You don’t need any special skills to assemble a LED lamp.
Five minutes of free time, a few tools and some desire to make something by yourself - that's all you need to build a modern, beautiful and efficient light source.

To assemble the LED lamp we’ll need:
light-emitting diodes (http://amzn.to/2oKv9eS)
soldering iron(http://amzn.to/2oxTJNS)
multimeter(http://amzn.to/2oBLSRb)
screwdriver(http://amzn.to/2p4XDkn)
solder(http://amzn.to/2oy1kMn)
hot glue.(http://amzn.to/2oy4GPL,http://amzn.to/2oBwswi)

YOUTUBE Channel : https://goo.gl/3h1HJq
Like on FACEBOOK : https://goo.gl/dzTCmA
Follow  on twitter    : https://goo.gl/hhrcQ9
Blogspot                   : http://techmoinnovation.blogspot.in

Also Watch video :

HOW TO USE 2 SIM + 1 MEMORY CARD IN HYBRID SIM SLOT : https://goo.gl/6J8sBv
HOW TO USE HYBRID SIM SLOT                   : https://goo.gl/yRTuV0
Magnetic Charging Cable                                :https://goo.gl/tzLdCP
LED lights bulb from old CFL lamp                :https://goo.gl/ccHxnl
Transformer Less Power supply                    :https://goo.gl/bUE6Ta
LENOVO K6 POWER UNBOXING IN HINDI   : https://goo.gl/KSeI7t
WhatsApp new upcoming update of 2017  : https://goo.gl/Gp5wYU
Best Free Video Editor App Android             : https://goo.gl/lmBgxh
TOP 5 FREE BEST Android Apps 2017        : https://goo.gl/Cnjp8W
Xiaomi Redmi Note 4 Specifications            : https://goo.gl/nyknWf


Find
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Smith Chart PPT

Smith Chart Complete PPT : Click Here 

Microwave Engineering (2171001)

Smith Chart

Smith Chart

Microwave Engineering (2171001) syllabus

Microwave Engineering (2171001)

Question Bank of Microwave Engineering

Chapter -1 Introduction to Microwaves:

1.      What is the importance of Microwave? Give its applications.

 Chapter -2 Microwave transmission lines and waveguides:

1.   Derive necessary equations for attenuation constant and phase constant with reference to EM wave propagating along transmission line.

2.   Draw an equivalent circuit of two wire parallel transmission line having length of Dz and derive the equations for it.

3.   What is impedance matching? Explain impedance matching using stub.

4.   Explain in brief standing wave and reflection coefficient of transmission line and derive the expression for the impedance and reflection coefficient at any point on the line.

5.   Derive the equations of characteristic and Input impedance of tow wire transmission line.

6.   Sketch circular and rectangular waveguide and compare their dominant mode, advantages and disadvantages.

7.   Difference between Strip line and Micro Strip line, with advantages and disadvantages.

8.    Explain Cutoff Wavelength of rectangular waveguide and give the relation between l₀, l_g, l_c.

9.    Define:

1.    Group velocity.

2.    Phase velocity.

3.    VSWR.

10.Short note with Advantages and Disadvantages.

1.   Coplanar line.

2.   Slot line.

3.   l/4 and l/2  TX lines

11.              Why TE₁₀ is the dominant mode for rectangular waveguide?

12.              Why TEM wave cannot propagate through rectangular waveguide?

13.              Draw the field pattern of TE_01, TE₁₀, TE₁₁, TE₂₀, TM₁₁ for rectangular waveguide.

14.              What are the losses due to mismatch in transmission lines

Chapter – 3 Microwave component & their S-parameters :

1.      Short note on “S” parameters

2.      What do you mean by reciprocal network? Draw and explain series tee junction and find its simplified S-matrix using S-parameter.

3.      What is magic associate with magic tee junction?

4.      Explain the operation of Magic TEE with its s-parameter. Also list some applications of magic TEE. Draw and explain waveguide band, corners and twist in detail with their applications.

5.      Explain faraday’s rotation effect. Describe the construction and working of microwave isolator. Explain the terms isolation and insertion loss as related to isolator.

6.      What is the purpose of directional Coupler? Define coupling factor, directivity, isolation of Directional coupler and write expression for each.

7.      Draw schematic of four port circulator and explain its working, also show and explain how one can construct a four port circulator using two magic tees and a phase shifter.

Chapter – 4 Microwave tubes and circuits:

1.      What are the limitations of conventional tubes at high frequencies list that and explain any four.

2.      Describe the construction and working, applications and performance characteristics of a reflex klystron. Explain how velocity and current modulation takes place using the Applegate diagram.

3.      Give difference between two cavity klystron and reflex klystron. Also draw the schematic of two cavity klystron. And explain its working, performance and applications.

4.      Draw different slow wave structures and write why slow wave structures are used in traveling wave tubes? Also explain working and applications of TWT with neat sketch.

5.      Explain the mechanism of oscillations of Magnetron Oscillator with the aid of suitable diagram and discuss its performance characteristics.

 Chapter -5 Semiconductor microwave devices and circuits:

1.      Explain IMPATT Diode with its construction, working and application.

2.      Explain the Tunnel diode characteristics with the aid of Energy band diagram.

3.      Why Gun diode can’t be called a diode justifies; Explain Gunn effect using two valley theory.

4.      Give at least three differences between microwave transistor and TEDs (i.e. transfer electron devices). Write the statement of Gunn effect and explain GaAs diode.

5.      Explain figure of merit of various surface geometries of microwave bipolar transistor.

6.      Explain PIN diode and its applications.

7.      Explain construction and working of varactor diode. And also explain quality factors for same.

8.      Short note on:

A.     Parametric amplifier

B.     IMPATT and TRAPATT diode

Chapter – 6 Radar Systems:

1.      Explain the principal of RADAR. Derive the range equation of RADAR. Briefly discuss the factors which influence the range of radar.

2.      Explain advantages of RADAR. Give its applications.

3.      Short note on MTI RADAR.

4.      Explain Pulse RADAR.

5.      Explain Scanning and tracking.

6.      Short note on display of radar.

7.      What is Doppler radar? Explain CW radar and compare with FM CW radar

EXAMPLES asked in GTU Exams:

1.      The dimension of a waveguide is 2.5X1cms.The frequency is 8.6 GHz Find the possible modes that can propagate through the waveguide also find the cutoff frequencies for the same.

2.      A rectangular waveguide is filled by dielectric material of Er =9, with inside dimension of 7X3.5cm. It operates in the dominant TE₁₀ mode. Determine (i) cut off frequency (ii) phase velocity at a frequency of 2 GHz (iii) guided wavelength at the same frequency.

3.      A typical transmission line has a resistance of 6 W /km, inductance of 2.2mH/km, a capacitance of 0.005 nF/km and a conductance of 0.05mmho/km. Calculate the characteristic impedance, attenuation constant and phase constant of the transmission line at a frequency of 1kHz.Alo calculate the phase velocity of the signal

4.      A rectangular waveguide has dimension of 2.29 cm and 1.02 cm. It is desired that this waveguide is to be operated only in dominant mode and operating frequency is at least 25% above cut off frequency of dominant mode and not higher than 95% of the next cut off frequency. What is allowable operating frequency?

5.      A 5.2 cm length of lossless 200 W line is terminated in a load impedance of 60 + j 100 W Using smith chart            

(i)                 Determine Reflection coefficient and SWR along the line.

(ii)               Determine the Z and Y at the input and at a point 2.0 cm from the load end. The signal frequency is 750 MHz and  l = l₀