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Top 10 – ELECTRONICS ENGINEER EXAMINATION
Held in October, 2008 Page 2 of 33
Released on October 29, 2008

1
FERDINAND MATUTINO SANCHEZ
TECHNOLOGICAL INSTITUTE OF THE PHILIPPINES-QUEZON CITY
91.10

2
KRISTOFFER SY LAIZ
ATENEO DE NAGA
90.30

3
ROY ANDREW MANQUERIA GARCIA
DIVINE WORD COLLEGE OF CALAPAN
90.20
LEDA CELICA BAUTISTA SAMIN
WESLEYAN UNIVERSITY-PHILIPPINES-CABANATUAN CITY
90.20

4
DON JOVEN RAVOY AGRAVANTE
UNIVERSITY OF SAN CARLOS
90.00
KENNETH ALDRIN OPIS PRUDENCIO
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES-MAIN-STA. MESA
90.00

5
JEFRIL MANONGSONG AMBOY
BATANGAS STATE UNIVERSITY-BATANGAS CITY
89.90

6
RIGOR LANCION CABUÑAG
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES-MAIN-STA. MESA
89.80

7
JASON MARC ALMIROL ALEGADO
UNIVERSITY OF SAN CARLOS
89.60

8
MARK JOSEPH BERNABE PE
UNIVERSITY OF THE EAST-CALOOCAN
89.00

9
EDISON DIMAALA DE LARA
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES-MAIN-STA. MESA
88.90
ELEANOR ANNE BASA TIGLAO
HOLY ANGEL UNIVERSITY
88.90

10
CHESTER DE VERA PARAYNO
SAINT LOUIS UNIVERSITY
88.70
RYAN DE LEON RIVERA
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES-MAIN-STA. MESA
88.70

Complete List of Successful Examinees for the October 2008 Electronics Engineer Board Exam:

http://www.electronicslab.ph/docs/PRC-Electronics-Engineering-Board-Exam-Result-October-2008.pdf

Congratulations sa Lahat ng mga bagong Engineers !!!!!! Burjer Burjer hehehe..

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E-Gizmo sells two types of humidity sensors. The first one is a variable capacitance type humidity sensor made by Humirel ( HS1101 ) which costs 280 pesos and the second one is a generic variable resistance type humidity sensor ( CM-R ) costing which costs 186 pesos.

The Humirel HS1101 is cheaper than the variable capacitance humidity sensor made by Honeywell and the CM-R is at least 3 times cheaper than the General Electric HS15P variable resistance humidity sensor.
Humidity Sensors available from E-Gizmo.com

Humirel HS1101

CM-R Humidity Sensor

E-Gizmo’s location and contact numbers:

e-Gizmo Mechatronix Central
2nd Floor, VSC Building, 2313 Taft Ave., Malate, Manila.
Tel/Fax No: 536-3378,
Handyphone Globe +63915-973-7691
Smart +63921-779-0748

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Intersil Corporation (NASDAQ Global Select: ISIL), a world leader in the design and manufacture of high-performance analog semiconductors, today announced a new series of 12V to 5V synchronous rectified buck MOSFET drivers that provide the industry’s best light load efficiency for Intel VR11.1 systems.

The ISL6622, ISL6622A, and ISL6622B provide 3A sinking capacity and feature rapid rise/fall times that support up to 1MHz frequency switching. This delivers very high overall efficiency.

Combined with Intersil’s VR11.1 PWM controllers and with N-Channel MOSFETs, the ISL6622’s advanced PWM protocol supplies a complete core-voltage regulator solution for advanced microprocessors.

The ISL6622 enables diode emulation operation during PSI mode for enhanced light load efficiency and allows Discontinuous Conduction Mode (DCM) by detecting when the inductor current reaches zero. When “zero” is detected, the low side MOSFET is turned off to prevent sinking current and eliminating the power loss associated with the reverse currents. Intersil’s gate voltage optimization technology (GVOT) is also active during PSI mode; by reducing the gate drive voltage, switching losses, which dominate total power loss at light loads, are significantly reduced. This adds to the overall efficiency the ISL6622 provides.

These PWM controllers also include adaptive shoot-through protection to prevent both the upper and lower MOSFETs from conducting simultaneously. In addition, they integrate a 20kΩ high-side gate-to-source resistor to prevent self turn-on due to high input bus differential voltage.

Overvoltage protection can be operational while VCC is below the POR threshold: the PHASE node is connected to the gate of the low side MOSFET (LGATE) via a 10kΩ resistor, so the output voltage of the converter is maintained close to the gate threshold of the low side MOSFET. This capability protects the load in case the upper MOSFET(s) become shorted.

The drivers come in two package types with different drive voltages. In the 8-lead SOIC package, the ISL6622 drives the upper and lower gates to VCC during normal PWM mode; the lower gate drops to a fixed typical 5.75V in PSI mode. In the 10-Lead DFN ISL6622A, the upper gate can be driven from 5V to 12V via the UVCC pin; the lower gate has a resistor-selectable drive voltage of typical 5.75V, 6.75V, and 7.75V in PSI mode.

These drivers are designed for a wide range of server, workstation, desktop and gaming motherboard applications built around Intel processors. They also are an ideal design choice for VRM applications.