JNTUK 4 2 Results - JNTU Kakinada Results 2011 - www.jntuk.edu.in

JNTUK 4 2 Results - JNTU Kakinada Results 2011 - www.jntuk.edu.in : The Jawaharlal Nehru Technological University (JNTU) Kakinada formerly known as JNTUK has announced the Results of B.Tech 4 2 (4th Year 2nd Semester) (R07, R05, RR) Regular / Supplementary examinations April / May 2011. JNTUK 4 2 Results will declared soon online at the main official website (www.jntuk.edu.in) of the University. After the examination, all the students (who had appeared the JNTUK B.Tech 4 2 examination 2011) were waiting the results. As per announcement, JNTUK 4 2 Results will be published soon online at the main official website (www.jntuk.edu.in) of the JNTUK. Candidates, who had appeared the JNTU Kakinada (JNTUK) B.Tech 4 2 (R07, R05, RR) Regular / Supplementary examination April / May 2011 will get the results easily by visit link given as follow.

The Jawaharlal Nehru Technological University (JNTU) Kakinada or JNTUK has regularly updates its website (www.jntuk.edu.in) to declare the result for the exams held regularly. JNTUK has made the script especially for the candidates which can produce the result only enter by roll number. So candidates need only the roll number to know the Result. We made this page especially for the JNTUK 4 2 Results.

Remember it, if you are unable to get your result please visit on link given below regularly. Because, when JNTUK will be uploaded B.Tech 4 2 results or any other result in 2011. We will update the result immediately. Candidates can get the JNTUK 4 2 Results directly in your inbox by subscribe your e-mail id in a form given below. You can visit also (www.jntuk.edu.in) to get all the updates of the new and old exam results.

Important link : JNTUK 4 2 Results April / May 2011

Simple Power Battery Tester Circuit

This is a simple design circuit for battery tester circuit. In this circuit, operating will controlled by transistor 2N3904. This is the figure of the circuit;

In the circuit, LED will turn on if the voltages is over 42V. Threshold will increase about 1 V per 1 kilo ohm increase in R2. The current drain is about 7 mA with button pressed.

[Circuit schematic source: Hobby Projects Application Notes]

Simple pH-Electrode Circuit

A pH electrode measures hydrogen ion (H+) activity and produces an electrical potential or voltage. The operation of the pH electrode is based on the principle that an electric potential develops when two liquids of different pH come into contact at opposite sides of a thin glass membrane. This is a design circuit for the measurement. This is the figure of the circuit.

Amplifier U1 off sets the pH electrode by 512 mV. This is achieved by using National's LM4140A-1.0 precision micro power low-dropout voltage reference that produces an accurate 1.024V. That voltage is divided in half to equal 512 mV by the 10 kΩ resistor divider. The output of amplifier U1, which is set up in a unity-gain configuration, biases the reference electrode of the pH electrode with the same voltage, 512 mV, at low impedance. The pH-measuring electrode will produce a voltage which rides on top of this 512 mV bias voltage. In effect, the circuit shifts the bipolar pH-electrode signal to a uni-polar signal for use in a single-supply system. The second amplifier U2 is set up in a unity-gain configuration and buffers the output of the pH electrode. Again, a high-input impedance buffer between the pH electrode and the measurement instrument allows the circuit to interface with a greater variety of measurement instruments including those with lower input impedance. In most applications, the output voltage of the pH electrode is high enough to use without additional amplification. If amplification is required, this circuit can easily be modified by adding gain resistors to U2.

Simple Emitter Follower Driver with Speed-Up Capacitor

This is a design circuit for follower driver circuit. This circuit is give illustrated an alternate method to reverse bias the MOSFET during turn-off by inserting a capacitor in series with the pulse transformer. The capacitor also ensures that the pulse transformer will not saturate due to DC bias. This is the figure of the circuit;

This is s simplest form design circuit. The Opto-isolators may also be used to drive power MOSFETs but their long switching times make them suitable only for low frequency applications. [Circuit source: National Semiconductor Notes].

Simple Programmable Current Source/Regulator Circuit

This is a simple circuit of programmable current source/regulator. This circuit is used to generate current. This is the figure of the circuit;

This circuit uses L 200 as main component. The error amplifier of this circuit is disabled by shorting pin 4 to ground. The value R is used to fix the output Io :

Io=(V5-2)/R
The output voltage can reach a maximum value Vi
– Vdrop=Vi 2 V (Vdrop depends on Io ).

Simple Stable Low Frequency Crystal Oscillator Circuit

This is the design circuit for a Colpitts-crystal oscillator circuit. It is suitable for low frequency crystal oscillator circuits. Using the 2N3823 JFET, this circuit has excellent stability because the temperature will not vary the 2N3823 JFET circuit loading. This is the figure of the circuit.

This is a simple form circuit for the oscillator. [Circuit Schematic Source: National Semiconductor Application Note]

Simple Current Monitor Circuit

This is a simple design circuit for monitoring and detecting the current flow. This circuit is based on LM301A and FET. This is the figure of the circuit;

On the circuit diagram, R1 is used to senses current flow of a power supply. We could use JFET as a buffer because Id=Is, therefore the power supply current flow is accurately reflected by the output monitor.