dc.contributor.author | Kongkeaw, Anupong | en_US |
dc.contributor.author | อนุพงษ์ คงแก้ว | en_US |
dc.date.accessioned | 2021-08-27T05:49:13Z | |
dc.date.available | 2021-08-27T05:49:13Z | |
dc.date.issued | 2021-08-27 | |
dc.identifier.uri | http://repository.rmutp.ac.th/handle/123456789/3659 | |
dc.description | วิทยานิพนธ์ (วศ.ม.) -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2563 | en_US |
dc.description.abstract | This research presents the development of ultrasonic scaler for mobile dental
unit. The operation of the scaler uses a phase-locked loop circuit to generate high
frequency electrical signal. Then, the signal is amplified with a Darlington amplifier
circuit to feed to the coil in the Hand Piece, resulting in Magnetostriction. This
phenomenon causes the stretching and shrinking of the magneto-strictive stack with
high frequency, which causes the tip of the scaling head to vibrate more than 20,000
times/second. Traditional ultrasonic scaler for mobile dental unit has thermal problem
of the amplifier circuit due to use of the transistors as the switching devices. When
used for a period of time, the scaler is necessary to stop working, resulting in not much
scaling per day. This research solved the problem by using MOSFETs as switching
devices and adding cooling system to the amplifier circuit. The experiment was carried
out using actual conditions. The experimental results show that the developed scaler
has increased the number of scaling per day. In addition, it will still remove plaque
and dirt in the gumline around the base of the teeth similar to the scaler used by
general dentists. | en_US |
dc.description.sponsorship | Rajamangala University of Technology Phra Nakhon | en_US |
dc.language.iso | th | en_US |
dc.subject | Technological innovations | en_US |
dc.subject | นวัตกรรมทางเทคโนโลยี | en_US |
dc.subject | Dentistry | en_US |
dc.subject | ทันตกรรม | en_US |
dc.subject | Equipment medical | en_US |
dc.subject | อุปกรณ์การแพทย์ | en_US |
dc.subject | Dental instruments | en_US |
dc.subject | เครื่องมือทันตกรรม | en_US |
dc.title | Improvement of the ultrasonic scaler for mobile dental unit | en_US |
dc.title.alternative | การปรับปรุงเครื่องขูดหินปูนแบบอัลตร้าโซนิคสาหรับชุดทันตกรรมเคลื่อนที่ | en_US |
dc.type | Thesis | en_US |
dc.contributor.emailauthor | arit@rmutp.ac.th | en_US |