Results 1 to 10 of about 18,910 (240)

Bipolar Pulse-Drive Electronics for a Josephson Arbitrary Waveform Synthesizer

IEEE Transactions on Instrumentation and Measurement, 2008
A Josephson arbitrary waveform synthesizer (JAWS) has been developed in order to generate quantum-based ac voltage signals. The key component of this JAWS is a modified commercial 30-Gb/s pattern generator that can generate ternary patterns (containing the values 1, 0, and 1, resulting in bipolar pulses).
Helko E. van den Brom, Ernest Houtzager, Bernd E. R. Brinkmeier, Oleg A. Chevtchenko   +3 more
openaire   +2 more sources

Programmed driving waveforms for quick-response liquid powder displays

IEEE Transactions on Consumer Electronics, 2010
A low optical contrast ratio is the major drawback of quick-response liquid powder displays (QRLPDs). In this paper, the electro-optical response of the QRLPD is analyzed, and better optical contrast is found to be obtained if the display is driven by pulse number modulation (PNM). However, PNM driving requires a longer driving duration.
Chang-Jing Yang, Yung-Fang Chen
openaire   +1 more source

Modeling of a linear ion trap with driving rectangular waveforms

Journal of Mass Spectrometry
AbstractWe consider the operation of a digital linear ion trap with resonant radial ejection. A sequence of rectangular voltage pulses with a dipole resonance signal is applied to the trap electrodes. The periodic waveform is piecewise constant, has zero mean, and is determined by an asymmetry parameter : one value is taken on interval and another on ,
A. I. Ivanov, A. A. Sysoev, A. N. Konenkov, N. V. Konenkov   +3 more
openaire   +2 more sources

Pulse Drive Electronics for Josephson Arbitrary Waveform Synthesis

2004 Conference on Precision Electromagnetic Measurements, 2004
Two sets of dedicated electronics for driving Josephson arbitrary waveform synthesizers (JAWS) have been manufactured as part of a European collaboration. Their different architectures are described in detail.
L. Palafox, E. Houtzager, J.M. Williams, H.e van den Brom, T.J.B.M. Janssen, O.A. Chevtchenko   +5 more
openaire   +1 more source

On the selection of the supply voltage waveform in induction motor drives

IFAC Proceedings Volumes, 1974
SUMMARY When the induction motors are supplied by static inverters alternating currents in the d.c. supply of the inverter are produced. In some applications it is necessary to satisfy prefixed constraints on the amplitude and bandwidth of these alternating currents.
A. Bellini, A. De Carli
openaire   +1 more source

20.2: Drive Waveforms for Active Matrix Electrophoretic Displays

SID Symposium Digest of Technical Papers, 2003
Abstract Microencapsulated electrophoretic (MEP) displays are promising candidates for smart handheld applications, where ease of reading and ultra‐low power consumption are of primary importance. A thorough study of the electro‐optic response characteristics of MEP systems has led to the development of a variety of novel drive ...
Robert Zehner, Karl Amundson, Ara Knaian, Ben Zion, Mark Johnson, Guofu Zhou   +5 more
openaire   +1 more source

The Effects of Driving Waveform and Frequency on the Droplet Formation Process

Volume 11: Micro and Nano Systems, Parts A and B, 2007
For a piezoelectric stack (PZT) driven droplet generator, the driving waveform and driving frequency effects on liquid filament shape and droplet characteristics have been studied. A lumped element model (LEM) is developed to study the acoustic-mechanical behavior and the volumetric rejection of the droplet generator.
G. Yang, J. A. Liburdy
openaire   +1 more source

Digitising and measurement of variable-frequency waveforms in thyristor drives

Transactions of the Institute of Measurement and Control, 1985
On-going research within our department concerns the testing of thyristor drives for traction use. As a result of this work it became necessary to digitise the repetitive variable-frequency signals produced by the drives, to obtain by software processing root-mean-square and average values of current and voltage waveforms. This was undertaken primarily
J.G. Martin, C.A. Roebuck
openaire   +1 more source

A study on driving waveform of a piezoelectric inkjet print head

SPIE Proceedings, 2007
Inkjet printing technology with a drop-on-demand (DOD) inkjet head has been recognized as one of the versatile and low cost manufacturing tools in the electronics industry. However, general strategy to optimize jetting stability has not been understood well, because of the inherent complex multi-physics nature in inkjet phenomena.
Jun Y. Hwang, Myong Ki Kim, Sang Ho Lee, Kyungtae Kang, Heuiseok Kang, Young June Cho   +5 more
openaire   +1 more source

Terahertz waveform considerations for nonlinearly driving lattice vibrations

Journal of Applied Physics, 2019
High-field terahertz (THz) spectroscopy is applied to nonlinearly excite the E phonon-polariton vibrational coordinate in LiNbO3. We compare three THz sources to show that by optimizing the THz waveform, we can drive the atomic motion to large amplitudes and observe nonlinear effects.
Brittany E. Knighton, R. Tanner Hardy, Courtney L. Johnson, Lauren M. Rawlings, Joel T. Woolley, Coraima Calderon, Alexa Urrea, Jeremy A. Johnson   +7 more
openaire   +1 more source