Topic
Common collector
About: Common collector is a research topic. Over the lifetime, 1651 publications have been published within this topic receiving 7410 citations.
Papers published on a yearly basis
1 / 2
Papers
22 Jun 1997
TL;DR: In this article, an active common-noise canceler (ACC) is proposed to eliminate the common-mode voltage produced by a PWM inverter, which can prevent an electric shock on a nongrounded motor frame and suppress motor shaft voltage.
Abstract: This paper proposes an active common-noise canceler (ACC) that is capable of eliminating the common-mode voltage produced by a pulsewidth modulation (PWM) inverter. An emitter follower using complementary transistors and a common-mode transformer are incorporated into the ACC, the design method of which is also presented in detail. Experiments using a prototype ACC, whose design and construction are discussed in this paper, verify its viability and effectiveness in eliminating common-mode voltage in a 3.7 kW induction motor drive using an insulated gate bipolar transistor (IGBT) inverter. Some experimental results show that the ACC makes significant contributions to reducing a ground current and a conducted electromagnetic interference (EMI). In addition, the ACC can prevent an electric shock on a nongrounded motor frame and can suppress motor shaft voltage.
417 citations
Patent•
28 Feb 2003TL;DR: In this article, a disk drive is disclosed comprising a voice coil motor (VCM) for actuating a head radially over a disk, and a VCM driver comprises first and second transistors forming a common collector amplifier for sensing a current flowing through the voice coil of the VCM.
Abstract: A disk drive is disclosed comprising a voice coil motor (VCM) for actuating a head radially over a disk. A VCM driver comprises first and second transistors forming a common collector amplifier for sensing a current flowing through a voice coil of the VCM. The common collector amplifier improves the accuracy of the current sense measurement when the VCM is driven in a pulse width modulated (PWM) mode.
109 citations
Patent•
17 Sep 2002TL;DR: In this article, a dual-mode envelope restoration architecture is proposed for wide-band applications such as WDCMA and GSM/EDGE, where a switchmode amplifier is used to provide an envelope signal for amplitude modulation.
Abstract: An RF transceiver having dual-mode envelope restoration architecture. In narrow-band applications such as GSM/EDGE, a switch-mode amplifier is used to provide an envelope signal for amplitude modulating the phase-modulated signals. To achieve required modulation bandwidth in wide-band applications such as WDCMA, an analog amplifier is used to provide the envelope signal. Furthermore, in the wide-band mode, the envelope modulation is applied through the base of an emitter follower while the collector voltage is scaled to achieve a desired power output in the amplitude-modulated signals.
70 citations
1 Jul 1998
TL;DR: In this article, the authors compared two control strategies for direct AC-AC matrix converters: namely, the Venturini method and the space vector modulation (SVM) method, with regard to operation under unbalanced/distorted supply voltage, output voltage and input current harmonics, and converter losses.
Abstract: The authors contrast two control strategies for direct AC–AC matrix converters: namely, the Venturini method and the space vector modulation (SVM) method. Comparison of the relative performances is made with regard to operation under unbalanced/distorted supply voltage, output voltage and input current harmonics, and converter losses. Measured results are given using a converter for which each bidirectional switch consists of two IGBTs and two diodes in a common collector configuration. The SVM method uses a simpler method to control the input power factor and involves lower switching losses. The Venturini method can compensate input voltage unbalance and/or distortion and gives slightly superior performance in terms of input current and output voltage harmonics.
69 citations
TL;DR: In this article, the inverted common collector transistor resonator filters were analyzed in terms of the input immittance parameters, and a design procedure for the resulting circuitry was suggested, and the stability of the resultant circuitry was discussed.
Abstract: In this paper "inverted common collector" transistor resonator filters will be analyzed. Simple formulas will be presented for the input immittance parameters, in terms of the bridged-T equivalent network and in terms of the common-emitter Y parameters. A design procedure is suggested, and a design example given. Stability of the resultant circuitry is discussed.
65 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2022 | 1 |
| 2021 | 2 |
| 2020 | 11 |
| 2019 | 12 |
| 2018 | 21 |
| 2017 | 15 |