DC

This is an easy subject consisting block diagrams and Derivations, the only suggestion that we can give for this subject is just practise and practise until you feel it easy


click on unit names to download the notes unit wise


All the best....

Digital Communication Theory - EC6

e-Notes	Topic	Subject Experts
Click here	Introduction	Prof. P Nagaraju, RVCE, B'lore
Click here	Sampling Process
Click here	Waveform Coding Techniques
Click here	Line Codes	Dr. H V Kumaraswamy, RVCE, B'lore
Click here	Spread – Spectrum Modulation
Click here	Digital modulation techniques	Prof. M N Suma, BMSCE, B'lore
Click here	Detection and Estimation

MEC

This is new subject introduced for 10 batch and it is bit confusing and difficult to understand you need to study this with care from the beginning and along with these things this paper pattern is different in part-A we get 5 questions and in part-B 3 questions.


Click on the unit numbers to download, now you can download these notes using your mobile also..


All the best...:)

Micro Electronics Circuits - 10EC63

e-Notes	Topic	Subject Matter Experts
Unit 1	MOSFETS	Prof. S V Uma, RNSIT, B'lore
Unit 5	Feedback Amplifiers
Unit 6	Operational Amplifiers
Unit 2	Single stage IC Amplifier	Prof. Prakash Tunga, RNSIT, B'lore
Unit 3	Single Stage IC Amplifiers
Unit 4	Single Stage IC Amplifiers
Unit 7 & 8	Digital CMOS Circuits	Prof. Shylashree N, RNSIT, B'lore

 

Antennas and Propogation VTU Reference notes

Antenna & Propogation is a typicalsubject but easy to handle. Prefer unit 7&8, they are easy and can score in that units here are the notes for AP you can refer this along with your class notes.

click on the unit numbers to download and now these notes can also be downloaded using your mobile phones....!


All the best....:)

Antennas and Propogation - 06EC64

e-Notes	Topic	Subject Matter Experts
Unit 1	Antenna Basics	Prof. Vijaya.K, BMSCE, Bangalore
Unit 2	Point, Sources and Arrays	Prof. Arathi R Shankar, BMSCE, Bangalore
Unit 3	Electric Dipoles and Thin Linear Antennas	Dr.H.V.Kumaraswamy, RVCE, Bangalore
Unit 4	Loop Antennas
Unit 6	Antenna types
Unit 4	Loop Antennas	Prof. Poornima.G, BMSCE, Bangalore
Unit 5	Slot Antenna, Ballnets principle and Complimentary antennas, ...
Unit 7	Radio Wave Propogation.
Unit 8	Troposphere Wave Propogation	Prof. Akhila.S, BMSCE, Bangalore

Micro-Controler

Micro-Controller this is also one of the easiest subject if you understand the concept. We can say it consist of very few or no problems and we suggest you to learn more number of programs as it may be useful for your future while doing projects please do not neglect it may become danger at the last try to write your own programs cultivate it as an Hobby...

e-Notes	Topic
Unit 1	Microprocessors and Microcontroller
Unit 2	Addressing Modes and Operations
Unit 3	Jump and Call Instructions
Unit 6	8051 Serial Communication
Unit	Interrupts Programming
Click Here	Assembly Programs
Click Here	Instructions to 8051
Unit 4	8051 Programming in C
Unit 5	Timer/Programming in 8051
Unit 6	8051 Serial Communicaiton
Unit	Interrupts Programming
Unit	8051 Interfacing and Applications

Engg Mathematics-4

Engg.Mathematics we can say this as an easy subject compared to the previous three about Mathematics no need of any tips as everyone knows that we need to practice a lot thats it...

we suggest you to mainly concentrate on NM-1 & 2 where you can score easily 

All the best click on the unit numbers in the below table to download

e-Notes	Topic
Unit 1	Numerical Methods - I
Unit 2	Numerical Methods - II
Unit 3	Complex Variables - 1
Unit 4	Complex Variables - 2
Unit 5	Special Fuctions
Unit 8	Sampling Theory
Unit 6	Probability Theory - 1
Unit 7	Probability Theory - 2

Signals & sysyems

Signals & Systems is bit difficult system and you need to do more and more practice as it is completely based on equations and problems you  need to refer many text books, very soon we will give you the post related to the text books as in the previous semester.

For s&s we strongly recommend you to discuss and practise with your friend it will be proven usefull at the end of the semester while facing the exams and from our side we are giving you this refernce notes which may be useful for getting good score...(unit wise)

All the best...

unit 1-4

unit 4-1

unit 4-2

unit 5-1

unit 5-2

unit 6-1

unit 6-2


If you have any problems regarding subjects leave us a comment we will try to help you...

Water level controller using 555 timer

Water level controller using 555 timer

Components Required 

1.  Power supply (12v) 

2.  NE 555 timer IC 

3.  Resistors (100Ox2, 10kO,1kO) 

4.  Relay (12V, 30A) 

5.  SL 100 transistor 

6.  1N4007 Diode 

Working of Automatic water tank level controller 

• We know the property of 555 timer IC, i.e. its output goes HIGH when voltage at the 

second pin(trigger pin) is less than 1/3 Vcc. 

• Also we can reset back the IC by applying a LOW voltage at the 4th pin (Reset pin). 

•  In this project 3 wires are dipped in water tank. Let us define two water levels-  Bottom (L) level and Top (H)  level. One of the wire or probe is  from Vcc, which can be called as  middle level (M). 

 The probe from bottom level is connected to the trigger (2nd) pin of 555 IC. So the 

voltage at 2nd pin is Vcc when it is covered by water. 

•  When water level goes down, the 2nd pin gets disconnected(untouched) from water 

i.e. voltage at the trigger pin becomes less than Vcc. Then the output of 555 becomes 

high. 

•  The output of 555 is fed to a SL 100 transistor, it energizes the relay coil and the 

water pump set is turned ON. 

Fig.7: SL 100 transistor 

•  While the water level rises, the top level probe is 

covered by water and the transistor becomes ON. Its 

collector voltage goes to Vce(sat) =0.2V. 

•  The low voltage at the 4th pin resets the IC. So the output of 555 becomes 0V. Hence 

the motor will turn OFF automatically. 

•  For practical implementation, you must use a relay. Rating of relay is chosen 

according to the load (Motor). 32 Ampere relay is best suited for domestic 

applications. 

Probe/Sensor arrangement diagram 

The probes can be arranged as shown in the diagram above. Insulated  Aluminium wires can be used as the probes. The probes can be binded on a plastic rod and  should be erected vertically inside the tank. The length of the probes wires and the supporting  plastic rod must be chosen according to the depth of the tank. Since DC is used in the level  sensing section electrolysis will occur in the probes and so the probes require small  maintenances in 6 or 7 month intervals.

Power supply unit for the circuit :

If you have any questions regarding the circuit components leave us a comment we will help you

Invisible Intruder Alarm

                                     Invisible Intruder Alarm

Description: In this post we are giving the circuit of invisible alarm which is simple and also having large number of applications this can be used as Intruder alarm by fitting this in either sides of the door ie., Transmitter on one side and receiver on the other side whenever some one passes through that door the alarm will ring.

Working Procedure: The IR LED's present in the Transmitter will give out the Ir rays which are invisible human eyes but can be seen by watching through camera,these IR rays are continuously observed by the D4 which is an IR LED which senses the IR rays transmitted by the transmitter when the obstacle come in between the transmitter and receiver the IR rays will not reach the receiver thus the buzzer rings.

PARTS:
R1 : 68 ohm
R2 : 10M
R3 : 1K
R4 : 470 ohm
R5 : 4.7 K 
R6 : 4.7 k
R7 : 100 ohm

D1,D6 : 1N4001
D4 : IR ray sensing diode
D2,D3 : IR ray emitting diode
D5,D7 : LED's red and green
Q1,Q2 : 2N2222
SCR 
IC-1 : LM324

Micro Buzzer,
9V battery;s two

S1,S2 : On/Off switch

Note: if IR emitters and sensors are not available in the store ask for normal TV remote Led and It's sensor



PLEASE DON'T FORGET TO COMMENT

Automatic night light

                                   Automatic night light

Here is an small circuit consisting of very few components to build a automatic self sensing night light. The light bulb used here would go on as the day light fades. As some times in night time also we need to switch of the light so I included even the switch S1 so that we can turn off the light in the night also if not necessary.

Parts list:

R1      :   10M ohm   1/2w

LDR       (light dependent resistor)

SCR   :    2N2601

Triac   :    2N5757

Lamp  :    60w bulb

S-1     : on/off switch

s-2     :DPDT  switch

FUSE :3A rating