Topic
RLC circuit
About: RLC circuit is a research topic. Over the lifetime, 14490 publications have been published within this topic receiving 142697 citations.
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TL;DR: This paper presents an induction heating high power supply composed by a single inverter circuit and a specially designed output resonant circuit that supplies simultaneously both medium- and high-frequency power signals to the heating inductor.
Abstract: The induction surface hardening of parts with nonuniform cylindrical shape requires a multifrequency process in order to obtain a uniform surface hardened depth. This paper presents an induction heating high power supply composed by a single inverter circuit and a specially designed output resonant circuit. The whole circuit supplies simultaneously both medium- and high-frequency power signals to the heating inductor. An initial study is made to select the most appropriated topology for this application. The resonant output circuit is analyzed, and a design procedure is presented. The selected inverter operation is described and simulated. Simulations are experimentally verified on a 10-kW dual-frequency resonant inverter operating at 10 and 100 kHz using MOSFETs of silicon (Si) and silicon carbide (SiC) technology. A comparative study is presented based on the measurements of power losses and the energy efficiency of the inverter using both types of MOSFETs.
43 citations
01 Jan 2008
TL;DR: The memristor is a two-terminal circuit element characterized by a relationship between the charge q(t) s St% i(7J d7 and the flux-linkage as discussed by the authors.
Abstract: A new two-terminal circuit element-called the memrirtorcharacterized by a relationship between the charge q(t) s St% i(7J d7 and the flux-linkage (p(t) = J-‘-m vfrj d T is introduced os the fourth boric circuit element An electromagnetic field interpretation of this relationship in terms of a quasi-static expansion of Maxwell’s equations is presented Many circuit~theoretic properties of memdstorr are derived It is shown that this element exhibiis some peculiar behavior different from that exhibited by resistors, inductors, or capacitors These properties lead to a number of unique applications which cannot be realized with RLC networks alone I + ” -3 nl Although a physical memristor device without internal power supply has not yet been discovered, operational laboratory models have been built with the help of active circuits Experimental results ore presented to demonstrate the properties and potential applications of memristors (a) I 1NTR00~cnoN I + Y -3 T HIS PAPER presents the logical and scientific basis for the existence of a new two-terminal circuit element called the memristor (a contraction for memory (b) resistor) which has every right to be as basic as the three classical circuit elements already in existence, namely, the resistor, inductor, and capacitor Although the existence of a memristor in the form of a physical device without internal power supply has not yet been discovered, its laboratory realization in the form of active circuits will be presented in Section II’ Many interesting circuit-theoretic properties possessed by the memristor, the most important of which is perhaps the passivity property which provides the circuit-theoretic basis for its physical realizability, will be derived in Section III An electromagnetic field interpretation of the memristor characterization will be presented in Section IV with the help of a quasi-static expansion of Maxwell’s equations Finally, some novel applications of memristors will be presented in Section V 1 + ” -3
43 citations
TL;DR: In this article, a position sensor is used as an interval determining means which determines an interval of sounding by varying in resistance value with a position pressed by the player, and its position information is inputted to a 1st parameter generating means 14 to calculate the value of a parameter for determining a resonance frequency from the position information (resistance value), and the value is outputted to the resonance circuit 15 as a sound source part together with the signal from a pickup 3.
Abstract: PROBLEM TO BE SOLVED: To obtain the electronic musical instrument which has nearly the same sesuous expressing power with an acoustic musical instrument by inputting a sound that a player has played to a resonance circuit as it is. SOLUTION: This instrument has a position sensor 13 as an interval determining means which determines an interval of sounding by varying in resistance value with a position pressed by the player. Its position information is inputted to a 1st parameter generating means 14 to calculate the value of a parameter for determining a resonance frequency from the position information (resistance value), and the value is inputted to the resonance circuit 15 as a sound source part together with the signal from a pickup 3. This resonance circuit 15 is obtained by electronically simulating a resonance body and has its resonance frequency determined according to the value of the parameter from the 1st parameter generating means 14, thereby exciting vibration with the signal inputted through the pickup 3. The signal generated by the resonance circuit 15 is outputted as a sound signal after a body sounding signal is added by a body simulator 16.
43 citations
Patent•
19 Sep 1974
TL;DR: An intrinsically safe system for monitoring the condition of materials includes a low power, stable frequency RF oscillator of the class C type comprising a resonant circuit which is coupled to a bridge network including the admittance of materials between a probe electrode and a grounded support member juxtaposed to the materials as mentioned in this paper.
Abstract: An intrinsically safe system for monitoring the condition of materials includes a low power, stable frequency RF oscillator of the class C type comprising a resonant circuit which is coupled to a bridge network including the admittance of materials between a probe electrode and a grounded support member juxtaposed to the materials. The output of the network generates an AC error signal which is applied to a phase sensitive detector including a chopper and a low power chopper drive for generating a DC signal representing the magnitude of the AC signal at a predetermined phase angle. The bridge network which may be linearly calibrated is isolated from the oscillator and the output error signal circuitry so as to allow the oscillator and the output error signal circuitry to float with respect to the grounded support member and the power supply associated therewith. The rms voltage across the admittance representing the condition of materials is limited so as to permit the system to comprise a two-wire transmitter wherein the sole source of power for the transmitter is derived from a 4-20 milliamp current drawn by the transmitter.
43 citations
TL;DR: In this article, a symmetric reciprocal gain-compensated negative group delay circuit is presented, operating at 310 MHz and exhibiting a group delay of -0.5 ns.
Abstract: We present a symmetric reciprocal (bilateral) gain-compensated negative group delay circuit, operating at 310 MHz and exhibiting a group delay of -0.5 ns. The circuit allows the conditionally stable gain-compensated propagation in both directions. The analytically predicted results are validated with frequency domain measurements, and stability is examined. Application of the circuit to a bilateral, gain-compensated constant phase shifter design is demonstrated.
43 citations