Results 251 to 260 of about 1,007,835 (292)
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A constant voltage constant current wheatstone bridge configuration
Sensors and Actuators, 1988Abstract For many measurement applications a Wheatstone bridge configuration can be used to measure physical quantities, such as pressure, force or velocity. Offset behaviour plays a vital role in the overall accuracy. Often, ambient temperature changes cause undesired changes in parameters that are supposed to be constant.
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Constant voltage constant frequency control for single phase three level inverter
2012 International Conference on Renewable Energy Research and Applications (ICRERA), 2012This paper proposed a single-phase three-level inverter that has constant voltage constant frequency (CVCF) operation system. Harmonic analyses with linear and nonlinear loads have been realized to measure the robustness of the proposed technique. It has been shown that the proposed technique has 15% less harmonic distortion and better performance than
Öztürk, Nihat +2 more
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A low voltage CMOS constant current-voltage reference circuit
2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512), 2004The proposed CMOS current-voltage reference circuit consists of a traditional bandgap circuit based on the use of PMOS transistors in weak inversion. Its current is stabilized by an on-chip resistor with positive temperature coefficient. The voltage reference is produced by compensating the positive temperature coefficient of a resistor by the negative
I. Nissinen, J. Kostamovaara
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SQUID Operation at a Constant Voltage
IEEE Transactions on Applied Superconductivity, 2007We have studied the operation of a superconducting quantum interference device (SQUID) at a constant voltage. A SQUID was coupled directly to the low noise preamplifier without any flux modulation. The deviation of the SQUID voltage from the reference voltage is amplified and produces a feedback current into the SQUID. We evaluated a flux change in the
Mizushi Matsuda +2 more
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Constant-Voltage High-Tension Generators
The British Journal of Radiology, 1929Many Practical problems of scientific interest in connection with X rays and the fundamental properties of matter, as well as many of the problems of modern radiological practice, demand a source of high constant voltage and, in view of this, it is thought possible that a survey of modern methods of obtaining such voltage supplies may be of value.
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Constant frequency and constant voltage control of induction generator
Electrical Engineering in Japan, 1992AbstractA doubly fed induction generator is useful for a local‐use water power plant. Setting it in nonconstant water flow, we can use it as a constant‐frequency power generator. This paper shows how to control this generator system.This paper has two important points. One is that this generator system is always excited at primary winding.
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Constant-Current versus Constant-Voltage Stimulation
Journal of Neurosurgery, 1985R, Prass, H, Lüders
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Impulse-generator voltage charts for selecting circuit constants
Electrical Engineering, 1937It is suggested in this paper that impulse generator voltage waves for commercial testing may be compared not only on the basis of wave shape but also on the basis of relations between circuit constants. The charts and graphs included are intended to show how desirable this is, and they may be used to facilitate both front-of-wave and full-wave testing.
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A highly efficient constant-voltage triboelectric nanogenerator
Energy and Environmental Science, 2022Xinyuan Li, Chuguo Zhang, Yikui Gao
exaly