ABSTRACT
This project work deals on the design and implementation of an automatic hand-dryer with display capable of drying up a wet hand inserted under its vent and goes off automatically as soon as the ands are removed. The system also incorporates a decimal counting unit that displays the temperature of the blown out air in 0C. This system is configured using an optp-coupler realized with cadmium-sulphide photocell (c.d.s) at the input. The output of the sensor is conditioned by quad-2-input schmit trigger NAND gate (74132) which serves as the control logic used to trigger a one-shot delay that biases a transistor switch. The transistor commutes a TRIAC (solid state relay) that switches on/off the blower connected to it. When a wet hand is inserted under the vent and blocks the line-of-sight of the sensor, the blower starts to blow automatically as long as the hands are still blocking the c.d.s, else it will stop. The seven-segment display displays the temperature of the blown out air in 0C and resets simultaneously with the switching off of the dryer.
Abstract: This study investigates strategies for integrating sustainability practices into...
ABSTRACT
This study investigated the effect ofenriched expository method on interest and performance in geometry among Junior Secondary S...
ABSTRACT: The impact of big data analytics on vocational training effectiveness is transformative, providing data-driven insights to enhance e...
Background of the study
Career play a very fundamental and...
ABSTRACT
This study examines the role of the press in the free and fair election in Nigeria. Specifically, the study det...
ABSTRACT
The primary objective of this study is to assess the broadcast media in the campaign agai...
Abstract
This study examined the causes and effects of mass failure in English language in the secondary schools in Ogun...
ABSTRACT: Investigating the benefits of early childhood education in enhan...
ABSTRACT
This work is a linguistic stylistic study of Chukwuemeka Ike’s novels. It involves a rigorous analysis and synthesis that...
ABSTRACT
This study was carried out on the impact of small and medium scale enterprises development on youth empowermen...