Versatile Optical Trigger / Hasrine Abdullah and Fatin Salwa Ahmad

Abdullah, Hasrine and Ahmad, Fatin Salwa (2001) Versatile Optical Trigger / Hasrine Abdullah and Fatin Salwa Ahmad. [Student Project] (Unpublished)

Abstract

This Versatile Optical Trigger circuit is a trigger circuit where is depending on the amount of lights that falling on the sensor. It can be respond in dim light or bright condition Application to this trigger circuit include switch on a lamp in a cupboard when the door is open. Modification can be done to the trigger board by adding second circuit called differentiator The differentiator changes the response of the trigger of the trigger, instead of being sensitive to light level it becomes sensitive to the rate of change of the light level It can be set to respond in dim or bright condition. For example, it switches on the lamp or buzzer when there are shadow or rapid changes on the sensor. It will trigger the switches (lamp or buzzer) until the user push button to stop it. It is able to make a. transient response or a permanent one. A permanent response is useful in a security system to detect the intruder. However, the circuit will not trigger with slow changes of light level, such as might be caused by the arrival of dusk or the passing cloud over the sun.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Abdullah, Hasrine
98144633
Ahmad, Fatin Salwa
98144626
Contributors:
Contribution
Name
Email / ID Num.
Advisor
Mohamad, Yusnita
UNSPECIFIED
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials > Semiconductors
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials > Detectors. Sensors. Sensor networks
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials > Filters (Electric)
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Microelectromechanical systems
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Applications of electronics
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Photoelectronic devices (General)
Divisions: Universiti Teknologi MARA, Pulau Pinang > Permatang Pauh Campus > Faculty of Electrical Engineering
Programme: Diploma of Electrical and Electronic Engineering
Keywords: Sensor, Trigger Circuit, Buzzer
Date: October 2001
URI: https://ir.uitm.edu.my/id/eprint/50881
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