Abstract:Abstrack: Wireless usage is no longer only able to send data or files, power delivery or power transfer can be applied using wireless networking technology system or also called wireless energy transfer. Research purposes,…
s, to make prototype power wireless transfer by using royer oscilator circuit, and turning the load to the maximum with the minimum possible input. Using the 9.8 V input from Trafo 5A and changing the capacitor value of 6.8nf / 100v x10 C on the transmitter (coil transmitter bigger than coil receiver). Installation of each capacitor with a distance of 7 cm, give effect to maximal value increase, with Voltage 14.2 V, current 0.02 A, power 0.284 W and Decrease Freq 610.5 KHz. As for the distance of 12 cm also get a maximum value of 11.8 V voltage, current 0.02 A, and a decrease in Frequency 614 Khz. The greatest efficiency at both distances is obtained, and . To turn the load to the maximum (7 lamps used 7 W lamps with a total load 28 W), PWT connected to USB 5V, and connected to battery and booster converter circuit so the distance is 12 cm, obtained input voltage 2.2 and output voltage 47.8 V, with output power of 1.43 W, current 0.03 A, and percentage increase of 2072 voltage. Installation of capacitors affects the voltage values, current, distance and power on the receiver. To light a large load, used a series of booster converter to power 28 W load, with 3.7 V input on battery packed on USB 5V, type TP-4056.
Keyword : Royer Oscillator circuit, Power wireless transfer, Booster converter circuit
Abstrak: Penggunaan Wireless saat ini tidak lagi hanya bisa mengirim data atau file, pengiriman daya atau perpindahan daya bisa diterapkan menggunakan sistem teknologi jaringan nirkabel atau disebut juga wireless energy transfer. Tujuan penelitian, untuk membuat prototype power wireless transfer dengan menggunakan rangkaian royer oscilator, dan menyalakan beban secara maksimal dengan input seminimal mungkin. Dengan menggunakan input 9.8 V dari Trafo 5A dan perubahaan nilai kapasitor 6,8nf / 100v x10 C pada bagian transmitter (coil transmitter lebih besar dari coil receiver). Pemasangan tiap-tiap kapasitor dengan jarak 7 cm, memberi dampak peningkatan nilai maksimal, dengan Tegangan 14.2 V, arus 0.02 A, daya 0.284 W dan Penurunan Freq 610.5 KHz. Sedangkan untuk jarak 12 cm juga mendapatkan nilai maksimal tegangan 11.8 V, arus 0.02 A, dan penurunan Frequensi 614 Khz. Efisiensi terbesar pada kedua jarak tersebut didapat, dan . Untuk menyalakan beban secara maksimal (beban digunakan lampu 7 W sebanyak 4 lampu dengan total beban 28 W), PWT dihubungkan ke USB 5V, dan terhubung ke baterai dan rangkaian booster converter, sehingga jarak 12 cm, didapat input tegangan 2.2 dan keluaran tegangan 47.8 V, dengan daya keluaran 1.43 W, arus 0.03 A, dan Persentasi kenaikan tegangan 2072. Pemasangan kapasitor mempengaruhi nilai tegangan, arus,jarak dan daya pada receiver. Untuk menyalakan beban yang besar, digunakan rangkaian booster converter untuk menyalakan beban 28 W, dengan input 3.7 V pada baterai yang dicas pada USB 5V, jenis TP-4056.
Kata Kunci : Rangkaian Royyer Oscillator, Power wireless transfer , Rangkain Booster
Abstract:This study investigates the stress concentration factor in an infinite steel plate with a thickness of 1 cm, containing an elliptical hole, subjected to biaxial loading at infinity. The elliptical hole has semi-axes a=5.0 cma…
0 cma = 5.0 \, \text{cm}a = 5.0 cm (major axis) and b=2.5 cmb = 2.5 \, \text{cm}b = 2.5 cm (minor axis). The applied stresses at infinity are a tensile stress of σ1=100 kg/cm2\sigma_1 = 100 \, \text{kg/cm}^2= 100 kg/parallel to the major axis and a compressive stress of σ2=−100 kg/cm2\sigma_2 = -100 \, \text{kg/cm}^2= -100 kg/ perpendicular to the major axis. The material properties include Young's modulus E=2.1×106 kg/cm2E = 2.1 \times 10^6 \, \text{kg/cm}^2E = 2,1. kg/ and Poisson's ratioν=0.3\nu = 0.3 = 0.3. Using analytical solutions from classical elasticity theory, the maximum tangential stress at the edge of the ellipse is calculated as σmax=600 kg/cm2\sigma_{\text{max}} = 600 \, \text{kg/cm}^2= -600 kg/, yielding a stress concentration factor of kσ=σmax/σ=6k_\sigma = \sigma_{\text{max}} / \sigma = 6 = =6. Additionally, a finite element (FE) analysis based on the Salerno and Sahoni problem for a quarter section of the plate results in kσ=3.1125k_\sigma = 3.1125 = 3.1125 for a configuration with s/r=5s/r = 5s/r = 5, showing a discrepancy of 1.3% compared to the theoretical value of kσ=3.1k_\sigma = 3.1= 3.1 from Peterson's Stress Concentration Factors. The results demonstrate good agreement between the calculated model and theoretical predictions, validating the accuracy of the FE approach for stress concentration analysis in such configurations.
Abstract:The Gondoriyo 1-phase network has a network length of 3.2 km supplied by a 1-phase network that is charged in phase S on BSB 1. The extent of the service area makes the load on phase S jump high. The measurement results…
obtained by the load current during peak load reached a total of 62A. While the load current of the repeater at the time of peak load is phase R of 32A, phase S of 98A, and phase T of 44A. With such conditions, it is necessary to expand the medium voltage distribution network in the Gondoriyo area with the aim of balancing the load on the BSB 1 extension. To facilitate load sharing in the expansion of the Gondoriyo area, the ETAP powerstaion 7.5.0 simulation program is used. which consists of 1 phase simulation before expansion and 3 phase simulation after expansion. From the results of this engineering shrinkage simulation, the total engineering shrinkage value in the 1-phase network before the expansion was 6480 kW, after the network expansion, the total engineering shrinkage changed to 2510.4 kW. With the simulation that has been made, it is expected to produce a load sharing plan that will make it easier for PT PLN (Persero) Rayon Boja to share the load on the network after the expansion.
Abstract:Load balancing is one of the things that must be considered by reducing the value of voltage drops or power losses that occur in distribution channels. It is necessary to know the characteristics of the load in an area or…
r area with a balanced supply so that each phase is burdened evenly. Calculating the voltage drop on the distribution network conductors, the voltage drop on the KBN09 Slawi feeder was calculated. What will be calculated here is from the line to the transformer furthest from the GI, namely from the three-phase 20 kV main line, single-phase branching. The results of power calculations from GI Kebasen Tegal show differences between R, S and T phases with three 20 kV phases in pre-balance and post-balance conditions. As written, the value for R wire is 82661.52 W, for S 52613 W, while for the T phase the value is 60127.06 W. Meanwhile, the calculation of power losses from GI Kebasen Tegal shows differences between the R, S and T phases with 1 phase voltage in the conditions before balance and after balanced. On the 3-phase line for the R wire, the power loss decreases from 34,198 W to 17,0425 W, for S it increases from 11,540 W to 19,077 W, while for the T phase the value remains 15,274 W.
Abstract:The self-registration machine helps patients register them selves. The use of APM machines at Wava Husada Hospital has not been carried out properly for several reasons, such as Man, Method and Machine. The aim of this research…
esearch is to evaluate the performance of APM users to identify the components and effects to increase the effectiveness of APM. Qualitative research methodologies were used in this study. Data was obtained from APM officers and medical records officers. The results of the research show that the presence of APM officers has helped the patient registration process, but there are several things that make the use of APM less effective at Wava Husada Hospital, namely in terms of staff, the lack of APM officers, in terms of the method of using APM is not carried out in accordance with the SOP, in terms of Machine errors or loading often occur. Consequently, there are too many patients, the registration process is thrown off, services are provided non-procedurally, and registration is completed by hand. Efforts made by officers to ensure that the use of APM runs well are adding APM officers, training APM officers on APM use, and improving internet quality so it doesn't load frequently.
Abstract:The study aims to gain a better understanding of the role of Order Taker in improving the quality of Housekeeping services at the The Sunan Hotel. In addition, the study also tries to identify problems faced by staff and…
ways to address them. The research was designed using a descriptive qualitative approach. The theory used is the quality of service. The data obtained was collected through interviews, observations, and literary studies. The result of this research is that Order Taker helps improve the quality of Housekeeping services by receiving and processing guest requests in a timely and efficient manner. Handle guest complaints in a friendly and professional manner. Give me a polite and friendly service. Create a positive relationship with the guests. Using technology to be more efficient. Maintain the comfort and hygiene of the guest room. The obstacles faced are the Order Taker facing many challenges, including high work pressure, lack of technological support, incompatibility with Housekeeping staff, and lack of training and motivation. As for the strategy used to tackle this problem is to keep up with trends using technology, manage workloads, and improve communication. Team coordination, training, and incentives.
Abstract:Medical personnel are a group of workers who are at high risk of experiencing work accidents and occupational diseases. One type of occupational disease that is often experienced by medical personnel is mental illness. Mental…
ental illnesses experienced by medical workers can have a negative impact on their quality of life, performance and productivity. Therefore, medical personnel who suffer from mental illness have the right to receive protection and guarantees from the government and employers. However, in practice, medical personnel who suffer from mental illness often experience difficulties in submitting claims. The research entitled "Recognition of Mental Illness as a Consequence of Medical Personnel in Work Accident Insurance Claim Procedures in Indonesia" is normative-qualitative research. Medical workers face a lot of stress and workload, especially during the COVID-19 pandemic, and mental illness is one of the consequences. Mental illness can impair their performance, health, and well-being, and place them at risk to patients and their work environment. With the recognition of mental illness as a consequence of medical personnel in the JKK claim procedure in Indonesia, JKK is a social security program organized by BPJS Employment. This program provides guarantees to workers or laborers to receive health services and cash compensation due to work accidents or work-related illnesses. So it is hoped that it can provide benefits for medical personnel in the form of getting proper protection, increasing the productivity of medical personnel and improving the quality of health services.
Abstract:PT Berau Coal as one of the National Coal mining companies operating in Berau Regency, East Kalimantan, is always trying to increase its coal production. PT Berau Coal's production target in 2014 is 23 million tons (Source:…
ce: PT Berau Coal's 5-year long-term plan document). This increase in production can basically be achieved in 2 (two) ways, namely: 1. This is done by adding heavy equipment such as loading equipment and production transportation equipment so that production capacity becomes greater. 2. This is done by maximizing the productivity of mechanical equipment, namely existing loading and transport equipment. Increasing production capacity by maximizing the productivity of existing mechanical equipment is a relatively cheaper way than adding heavy equipment. Efficiency is the key to increasing the productivity of existing mechanical tools. Based on considerations of the company's need to increase production, one of which is by maximizing the productivity of existing mechanical equipment, this research aims to conduct a study on the productivity of PC1250 loading equipment and HD465 transportation equipment carried out at the Agaru Pit mining block 44-50 at the Samabarata site. PT Berau Coal so that the results of this study can determine the productivity of each mechanical device. The research method is carried out using direct computation, tabular method, and comparison between theoretical and actual and using the theory of calculation equations. Where the supporting data for analysis is in the form of field data as primary data and literature data as supporting (secondary) data. The results of this research study are the productivity of PC1250 loading equipment and HD465 transportation equipment where there are deviation values between actual and theoretical, both positive deviation (the optimum positive deviation between actual and theoretical is 97.3%) and negative deviation (optimum negative deviation between actual and theoretical is -11.8 %).
Abstract:Introduction: WHO's global health sector strategy 2022–2030 on HIV goals to reduce HIV infections from 1.5 million by 2020 to 335,000 by 2030, and deaths from 680,000 in 2020 to below 240,000 by 2030. The Southeast Asia…
sia Regional Action Plan (RAP) for HIV (2017–2021) provides a clear vision of "zero new infections, zero HIV-related deaths, and zero discrimination" and a goal to "End the AIDS epidemic as a health threat by 2030". Methods: Qualitative research by understanding the phenomenon of what the research subjects experienced, In this study, the authors used a descriptive method, which aims to describe the facts of the Indonesian government's policy and the Thai government's policy in tackling HIV AIDS cases in each country. Results: People diagnosed with HIV should be offered and associated with antiretroviral treatment (ART) as soon as possible after diagnosis and monitored periodically using clinical and laboratory parameters, including tests to measure the virus in the blood (viral load). Indonesia's policies in dealing with HIV AIDS are: Government Policy, Treatment, treatment and support for PLHIV, Conducive Environment, Sustainability of Countermeasures. Meanwhile, Thailand's state policy is: Prevention, Treatment and treatment, Cooperation in countermeasures and creating a conducive environment for PLHIV. Conclusion: It is known that in principle, the prevention and treatment of HIV AIDS refers to the world health organization and is developed based on the needs of each local government by looking at several ethnicities, races and religions as strategies in accelerating their prevention
Abstract:Tujuan dari penelitian ini adalah untuk Optimalisasi Sistem Manajemen Persuratan Dalam Meningkatkan Efisiensi Kerja Organisasi Di Ikhwanul Muslimin. Hasil penelitian yang dilakukan menunjukkan bahwa Manajemen surat masuk…
dan surat keluar di Ikhwanul Muslimin melalui Sistem Informasi Surat antara lain: (1) Manajemen surat masuk dan surat keluar di Ikhwanul Muslimin dikelola secara elektronik menggunakan Siradi (Sistem Informasi Surat Dinas), (2) Pada pengelolaan surat masuk, surat diterima secara terpusat pada Sub Bagian Tata Usaha, Bagian Umum BUHK Ikhwanul Muslimin, (3) Pada tahap pencatatan surat masuk, masih terdapat unit kerja yang membutuhkan buku agenda untuk mencatat surat masuk. Surat masuk yang berbentuk fisik akandiscan terlebih dahulu dan fisik surat akan disimpan oleh pihak yang tertuju dalam surat masuk, (4) Pada tahap penyiapan konsep surat keluar dilakukan secara manual (Fisik) kemudian surat akan diproses melalui Siradi. Surat keluar yang berwujud fisik akan dikirim oleh caraka menggunakan buku ekspedisi, (4) Terdapat kendala seperti faktor jaringan dan Sumber Daya Manusia (SDM) yaitu masih ada unit kerja yang tidak melakukan digitalisasi pada surat yaitu dengan meng-scan dan mengupload file surat serta kesalahan input dalam memberikan kode klasifikasi / nomor surat.