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Induction heating is a non-contact method of producing heat which can be used to perform various processes like hardening, annealing, tempering, welding, brazing, melting, forging, etc. This paper discusses the design and implementation of induction heating on a given work-piece, using an LLC resonant circuit and a transformer for impedance matching, so as to transfer a maximum power of 5KW to the load. The load parameters are found out using ELTA software which calculates the values based on the dimensions of the work piece, operating frequency and temperature. The inverter used is based on SiC MOSFETs which minimizes the losses at high frequencies and high temperatures. The theoretical and simulated results from MATLAB are analysed and verified. The hardware is implemented for the LLC circuit with transformer and the results are presented.

Induction heating is a non-contact method of producing heat which can be used to perform various processes like hardening, annealing, tempering, welding, brazing, melting, forging, etc. This paper discusses the design and implementation of induction heating on a given work-piece, using an LLC resonant circuit and a transformer for impedance matching, so as to transfer a maximum power of 5KW to the load. The load parameters are found out using ELTA software which calculates the values based on the dimensions of the work piece, operating frequency and temperature. The inverter used is based on SiC MOSFETs which minimizes the losses at high frequencies and high temperatures. The theoretical and simulated results from MATLAB are analysed and verified. The hardware is implemented for the LLC circuit with transformer and the results are presented.

Induction heating is a non-contact method of producing heat which can be used to perform various processes like hardening, annealing, tempering, welding, brazing, melting, forging, etc. This paper discusses the design and implementation of induction heating on a given work-piece, using an LLC resonant circuit and a transformer for impedance matching, so as to transfer a maximum power of 5KW to the load. The load parameters are found out using ELTA software which calculates the values based on the dimensions of the work piece, operating frequency and temperature. The inverter used is based on SiC MOSFETs which minimizes the losses at high frequencies and high temperatures. The theoretical and simulated results from MATLAB are analysed and verified. The hardware is implemented for the LLC circuit with transformer and the results are presented.

This article is from Journal of Functional Biomaterials , volume 3 . Abstract To develop a novel ablation therapy for human solid cancer, the heating properties of a ferromagnetic carbon steel rod and a prototype Ti-coated needle using this carbon steel rod, were investigated in several high-frequency outputs at 300 kHz. In the former, the heating property was drastically different among the three inclination angles (θ = 0°, 45° and 90°) relative to the magnetic flux direction as a result of the shape magnetic anisotropy. However, the effect of the inclination angles was completely eliminated in the latter. It is considered that the complete non-oriented heating property relative to the magnetic flux direction allows the precise control of the ablation temperature during minimally invasive thermotherapy without a lead-wire connected to a fiber-optic thermometer. This newly designed Ti-coated device will be suitable for clinical use combined with its superior biocompatibility for ablation treatments using high-frequency induction heating.

Potential use of high frequency induction heating for high temperature liquid metal heat transfer testing

260 PG. OF CLASSIC MACHINE DESIGN AND FABRICATION. HEAT TREATING,WELDING,DIELECTRIC HEATING,AND MUCH MORE.

1Yankee Girl at Fort Sumter

By Alice Turner Curtis

Sylvia Fulton is a ten-years-old girl from Boston who stayed in Charleston, South Carolina, before the opening of the Civil War. She loves her new home, and her dear friends. However, political tensions are rising, and things start to change. Through these changes, Silvia gets to know the world better: from Estrella, her maid, she starts to understand what it is to be a slave, from her unjust teacher she learns that not all beautiful people are perfect, and from the messages she carries to Fort Sumter she learns what is the meaning of danger. However, this is a lovely book, written mostly for children.(Summary by Stav Nisser)

2Little Maid of Province Town

By Alice Turner Curtis

Plucky eight year old Anne Nelson, living in Provincetown on the tip of Cape Cod, is determined to bring the Revolutionary War to an end so that she can be reunited with her soldier father. Will she succeed in carrying an important message from Boston to Newburyport, warning the American troops to be prepared, or will she be caught by the English ships patrolling the harbor? (summary by wildemoose)

3From the Easy Chair Vol. 1

By George William Curtis

George William Curtis was a writer and public speaker. He was editor of Harper's Weekly and one of the founders of the American Republican party, and served Ulysses S. Grant; although he split from the party in the 1880s over the choice of presidential candidate. He was an original member of the New York Board of Education. This anthology of essays is the first of a three volume work, showing his broad knowledge and interest. - Summary by Lynne Thompson

4From the Easy Chair Vol. 2

By George William Curtis

The second volume of essays and observations From the Easy Chair of William Curtis, editor of Harper's Weekly and one of the founders of the American Republican party, and served Ulysses S. Grant; although he split from the party in the 1880s over the choice of presidential candidate. He was an original member of the New York Board of Education. - Summary by Lynne Thompson

5From the Easy Chair Vol. 3

By George William Curtis

The third volume of essays and observations From the Easy Chair of William Curtis, editor of Harper's Weekly and one of the founders of the American Republican party, and served Ulysses S. Grant; although he split from the party in the 1880s over the choice of presidential candidate. He was an original member of the New York Board of Education. ( Lynne Thompson)

This is a collection of poems by American poet Irene Curtis. These poems were collected by friends and family after her death in 1916, at only 26 years of age. This book of poems is divided into two parts. The first is a collection of poems in dialect, lending an extra voice to the community of people of colour with which she grew up in the South of the United States. The second is a collection of miscellaneous poems. All of the poems shine with a special warmth and love, which make it a pleasure to read them. - Summary by Carolin

A doll tells the story of her adventuresome life in rural England. This story, written by an 11 year old girl in the style of a dolls autobiography these stories are delightfully fresh and childlike at the same time. We follow her from her start in a long box in a store in Soho through several 'mothers', travels, illnesses and adventures. Enjoy. - Summary by phil chenevert

8North American Indian, Volume 1

By Edward Sherriff Curtis

Edward Sherriff Curtis was an American photographer and ethnologist who was funded by J.P. Morgan to produce a series on Native Americans. He was to produce 20 volumes and 1,500 photographs for the work. Curtis's goal was not just to photograph but also to document as much of Native American traditional life as possible before that way of life disappeared. He took over 40,000 photographic images of members of over 80 tribes. He recorded tribal lore and history, and he described traditional foods, housing, garments, recreation, ceremonies, and funeral customs. He wrote biographical sketches of tribal leaders. His material, in most cases, is the only written recorded history. - Summary by Wikipedia