Design of Portable Phototherapy using PL-S UVB Lamp for Psoriasis Therapy

Fitria Hidayanti,M Syafaat,Sunartoto Gunadi

doi:10.35940/ijeat.d7412.049420

Abstract

This research aims to design portable phototherapy using PL-S UVB lamp. The transformer DC power supply range used is step down transformer with 220 Volt primary input and 12 volt secondary output. The series of Driver Relay serves to control the mechanical relay in the on-off position, which corresponds to the changes received by the counting circuit, the circuit uses a BC 547A transistor and a 12V/5 pole DC relay and the diode used IN 4002/ IN4004. Resistance in this relay of 400 Ω. From the measurement results using digital multimeter obtained the voltage value in the IC LM7812 of 12.11 Volt and on IC LM7805 of 5.02 Volt. Ultraviolet radiation spectrum can penetrate the base layer of the dermis. Ultraviolet rays B can penetrate the base layer of epidermis skin.

Highlights

Every year people with especially psoriasis disease are increasing [1]
According to Indonesian Psoriasis Foundation, the number of psoriasis sufferers in Indonesia reaches about 2-6 million people [6]
Ultraviolet therapy [7-9] that uses artificial ultraviolet rays can treat psoriasis and has a return period of more than 50 years if the treatment is done in a fix dose, distance and precise timing, where a large dose is highly dependent on human skin type, age of the patient and disease conditions when treated [10, 11]

Summary

INTRODUCTION

Every year people with especially psoriasis disease are increasing [1]. With the increasing number of psoriasis sufferers and the heightened human awareness of health, various efforts continue to overcome the disease [2]. Ultraviolet therapy [7-9] that uses artificial ultraviolet rays can treat psoriasis and has a return period of more than 50 years if the treatment is done in a fix dose, distance and precise timing, where a large dose is highly dependent on human skin type, age of the patient and disease conditions when treated [10, 11]. In Indonesia, the number of psoriasis patients treatment using ultraviolet phototherapy tends to increase in accordance with increased human consciousness in healthy living [12, 13]. This is not balanced with the Revised Manuscript Received on April 25, 2020.

Syafaat, Bachelor Degree at Engineering Physics Department, Universitas Nasional

Power Supply Circuit

Power Supply Circuit Testing

CONCLUSION