Sunday, November 20, 2011
Sunday, February 20, 2011
Monday, January 24, 2011
Students with INC remarks, kindly comply with your lacking requirements. Special Exam is scheduled on February 7, 2010 @ 7:00PM.
Final Grade: Click Here!!!
Wednesday, January 12, 2011
A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field through the secondary winding. This varying magnetic field induces a varying electromotive force (EMF) or "voltage" in the secondary winding. This effect is called mutual induction.
If a load is connected to the secondary, an electric current will flow in the secondary winding and electrical energy will be transferred from the primary circuit through the transformer to the load. In an ideal transformer, the induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp), and is given by the ratio of the number of turns in the secondary (Ns) to the number of turns in the primary (Np).
By appropriate selection of the ratio of turns, a transformer thus allows an alternating current (AC) voltage to be "stepped up" by making Ns greater than Np, or "stepped down" by making Ns less than Np.
In the vast majority of transformers, the windings are coils wound around a ferromagnetic core, air-core transformers being a notable exception.
Transformers range in size from a thumbnail-sized coupling transformer hidden inside a stage microphone to huge units weighing hundreds of tons used to interconnect portions of power grids. All operate with the same basic principles, although the range of designs is wide. While new technologies have eliminated the need for transformers in some electronic circuits, transformers are still found in nearly all electronic devices designed for household ("mains") voltage.
Project: Construct a step-down transformer
Output: 0 – 15V
Tuesday, November 16, 2010
- SCS & GTO
- SHOCKLEY & DIAC
- UJT & PUT
- POT & LVDT
- BOURDON TUBE & BELLOWS
- RTD & THERMISTOR
- OPTICAL PYROMETER & PHOTOCELLS
- PHOTOCONDUCTIVE CELLS
- OPTICAL FIBERS
- ULTRASONIC TRANSDUCERS
- STRAIN GAUGE & ACCELEROMETER
- HALL EFFECT & HUMIDITY TRANSDUCERS
- TRANSISTOR SWITCH
Schedule of Presentation:
1. magneto-inductive sensor -ocon
2. anisotrop magneto resitive-jacob
3. permanent linear contactless displacement-reta
4. multi coil resolver-tablizo
5. color recognition sensor-tapon
6. color mark sensor-gaerlan
7. touch sensors-tay
8. capacitive proximity sensors-gramata
9. radar gun-moniza
10. smoke detector-guanlao
11. motion detector-bernardo
12. triangulation sensor-bucatora
13. capacitive displacement sensor-pascual
14. piezoelectric accelerometer-medillo
15. infrared thermometer-tan
16. laser rangefinder-catuday
Friday, April 16, 2010
The prerequisite of this course is Circuits 1. This course concentrates on the concepts and operation of resistors, inductors and capacitors. It starts with the RL, RC and RLC combination circuits. It also tackles responses of these circuits to varying frequency and their resonance.
To understand the concepts and principles of RLC circuits, their importance to modern technology and be familiar with the different networks of filter.
After taking the course, the students should be able to know how to design a circuit that would allow a certain frequency to pass and demonstrate the response of an RLC circuit.
VALUES TO BE INTEGRATED:
The course intends to develop in students the value of patience, discipline, cooperation, responsibility and determination in performing every activities and completing their projects and requirements.
1. Presentation 1
2. Presentation 2
3. Presentation 3
4. Presentation 4
5. Presentation 5
6. Presentation 6
7. Presentation 7
The course deals with the study of basic electronics devices, its materials, construction characteristics and operations as well as its different applications in the field of electronics, communications and other industrial applications.
To present a complete perspective of major electronic devices and comprehensive analysis to its operation, computations, and applications.
After taking the course, the students should be able to understand the operations of different transistor configurations, obtain the knowledge of how to design regulated power supply.
The course intends to develop in students the value of appreciation, discipline, patience, perseverance in solving problems, orderliness and neatness in presenting solutions to problems, honesty on quizzes, examinations and homework, and sense of responsibility in fulfilling assigned task.
- Semiconductor Diodes
- Diode Applications
- Bipolar Junction Transistor
- BJT DC Biasing
- Field Effect Transistor
- FET Biasing
- DC Power Supply