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power supplies
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220047
EISBN: 978-1-62708-341-6
... addresses the selection of power supplies in terms of these two factors as well as the operational features of different types of sources. The six different types of power supplies for induction heating applications covered in this chapter are line-frequency supplies, frequency multipliers, motor-generators...
Abstract
Besides the induction coil and workpiece, the induction generator (source of ac power) is probably the most important component of an overall induction heating system. Such equipment is typically rated in terms of its frequency and maximum output power (in kilowatts). This chapter addresses the selection of power supplies in terms of these two factors as well as the operational features of different types of sources. The six different types of power supplies for induction heating applications covered in this chapter are line-frequency supplies, frequency multipliers, motor-generators, solid-state (static) inverters, spark-gap converters, and radio-frequency power supplies. The chapter discusses the design and characteristics of each of the various types of power supplies.
Image
Published: 01 August 2015
Fig. 10.16 Dual-frequency contour, two power supplies with coils: multifrequency induction-hardening machine with coils designed for static heating of gear. AF: audio frequency; RF: radio frequency. Source: Ref 6
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Published: 01 June 1988
Fig. 1.1 Conversion efficiency of induction heating power supplies. From R. W. Sundeen, Proceedings, 39th Electric Furnace Conference , Houston, TX, AIME, New York, 1982, p. 8 ( Ref 1 )
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Image
Published: 01 June 1988
Fig. 1.2 Change in cost of induction heating power supplies since 1948. From R. W. Sundeen, Proceedings, 39th Electric Furnace Conference , Houston, TX, AIME, New York, 1982, p. 8 ( Ref 1 )
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Image
Published: 01 November 2019
Figure 27 GMR-based MCI image of power supply short current density from 5 µm ultra-thin silicon surface [34] .
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in Induction Heating Power Supplies
> Elements of Induction Heating: Design, Control, and Applications
Published: 01 June 1988
Fig. 4.3 Test data sheet for recording performance of an RF power supply with a calorimeter Source: Ameritherm, Inc.
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in Induction Heating Power Supplies
> Elements of Induction Heating: Design, Control, and Applications
Published: 01 June 1988
Fig. 4.6 Capacitor bank for a 3-MW line-frequency power supply; capacitors are located in a chamber beneath the induction coils Source: American Induction Heating Corp.
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in Induction Heating Power Supplies
> Elements of Induction Heating: Design, Control, and Applications
Published: 01 June 1988
Fig. 4.27 Remote tank circuit for use with an RF power supply, including work coil, output transformer, and tank capacitors Source: Lindberg Cycle-Dyne, Inc.
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in Process Design for Specific Applications
> Elements of Induction Heating: Design, Control, and Applications
Published: 01 June 1988
Fig. 6.21 Selection of power-supply frequency for coreless induction melting furnaces as a function of furnace size. A = recommended frequency regime. B = acceptable frequency. C = furnace frequencies which have been used but which do not provide good results. D = unusable furnace frequencies
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Image
Published: 01 August 2015
Fig. 3.2 Induction heat-treat power supply basic diagram. ac: alternating current; dc: direct current. Source: Ref 2
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Published: 01 August 2015
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Published: 01 August 2015
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Published: 01 August 2015
Fig. 3.19 Power supply output at resonant frequency. S.P.: set point; LF: low frequency; HF: high frequency. Source: Ref 3
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Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220027
EISBN: 978-1-62708-341-6
... Abstract This chapter focuses on the transfer of energy between the power supply and the induction heating coil. The most efficient transfer requires that the induction heated load and coil be matched to the power supply and that the electrical circuit containing these elements be properly...
Abstract
This chapter focuses on the transfer of energy between the power supply and the induction heating coil. The most efficient transfer requires that the induction heated load and coil be matched to the power supply and that the electrical circuit containing these elements be properly tuned. The chapter describes these procedures, including the processes involved in tuning induction heating circuits and load matching, impedance matching by means of a transformer, and tuning used for specific types of power supplies.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050025
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the basic components in an induction heat treating system. It describes the design and operating characteristics of power supplies, load-matching transformers, tuning capacitors, power regulators, controllers, process monitors, and diagnostic systems. It also...
Abstract
This chapter discusses the basic components in an induction heat treating system. It describes the design and operating characteristics of power supplies, load-matching transformers, tuning capacitors, power regulators, controllers, process monitors, and diagnostic systems. It also provides information on fixtures and work-handling devices, quench systems, and load matching and tuning procedures.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220077
EISBN: 978-1-62708-341-6
... Abstract This chapter describes two types of auxiliary equipment required in most induction heating installations: cooling systems and device timers. Water- and vapor-based systems used for cooling the power supply and the induction coil are described. The chapter concludes with a brief...
Abstract
This chapter describes two types of auxiliary equipment required in most induction heating installations: cooling systems and device timers. Water- and vapor-based systems used for cooling the power supply and the induction coil are described. The chapter concludes with a brief discussion of timers, with emphasis on open-loop timing systems.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220185
EISBN: 978-1-62708-341-6
... and describes some of the most widely used coils and common design modifications. Specialty coil designs for specific applications are also discussed. The chapter concludes with sections devoted to coil fabrication and design of power-supply leads. induction coil design induction heating inductors...
Abstract
Coil design for induction heating has been developed and refined over time based on the theoretical principles applied in practice to several simple inductor geometries such as the classical solenoidal coil. This chapter reviews the fundamental considerations in the design of inductors and describes some of the most widely used coils and common design modifications. Specialty coil designs for specific applications are also discussed. The chapter concludes with sections devoted to coil fabrication and design of power-supply leads.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050293
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the maintenance needs of major components in induction heat-treating systems, including power supplies, heat stations, capacitors, high-frequency output stages, induction coils, water systems, quench systems, and fixturing. induction heating systems...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110613
EISBN: 978-1-62708-247-1
... of bridges, opens, and parametric delay defects, which is essential for understanding the symptoms of a failing IC. These electronic principles are then applied to a CMOS failure analysis technique using a power supply signature analysis. CMOS failure analysis electronics failure analysis MOSFET...
Abstract
Electronics spans a number of devices, their configurations, and properties. A challenge is to identify those electronic subjects essential for failure analysis. This article reviews the normal operation and terminal characteristics of MOSFET. It describes the electronic behavior of bridges, opens, and parametric delay defects, which is essential for understanding the symptoms of a failing IC. These electronic principles are then applied to a CMOS failure analysis technique using a power supply signature analysis.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050001
EISBN: 978-1-62708-311-9
... to melt metals. Induction heat treating came into prominence in the 1930s, when high-frequency motor-generator sets were developed and used for the induction hardening of crankshaft journals and bearings. In 1938, Caterpillar installed a power supply for induction hardening track links, and by 1943...
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