Results 241 to 250 of about 13,374,736 (310)

A stable current-to-frequency convertor

Journal of Physics E: Scientific Instruments, 1972
This note describes a current-to-frequency convertor which provides continuous integration of an analogue input signal to give a digital output suitable for input to a scaler. The extremely stable peak-point voltage of a unijunction transistor is utilized to give an output stability of less than 0.05% and a short-term equivalent voltage drift of less ...
J F Williams, B A Willis, C R Devlin
openaire   +1 more source

The field-free Josephson diode in a van der Waals heterostructure

Nature, 2021
The superconducting analogue to the semiconducting diode, the Josephson diode, has long been sought with multiple avenues to realization being proposed by theorists1–3.
Heng Wu, Yaoji Wang, Yuanfeng Xu, P. K. Sivakumar, C. Pasco, Ulderico Filippozzi, S. Parkin, Yujia Zeng, T. McQueen, Mazhar N. Ali   +9 more
semanticscholar   +1 more source

A magnetic-modulator-type current-dividing highly stable DC current transformer for large currents

IEEE Transactions on Instrumentation and Measurement, 1991
A highly stable current-dividing DC current transformer system using a second-harmonic type of magnetic modulator has been developed for a several-hundred-ampere highly regulated current source which is required for nuclear magnetic resonance measurements.
M. Abe, H. Tsujimura, J. Nakazoe
openaire   +1 more source

Temperature Stable Radiation-Resistant Current Reference Based on FET

Radioelectronics and Communications Systems, 2021
The influence of temperature and ionized radiation on the properties of current stabilizers, based on JFETs with p–n-junction as a gate and MOSFETs in saturation mode at two-pole connecting when the gate and source are closed, is experimentally investigated.
I. M. Vikulin, L. F. Vikulina, V. E. Gorbachev, N. S. Mikhailov   +3 more
openaire   +2 more sources

Non-Existence of Stable Currents in Hypersurfaces

Southeast Asian Bulletin of Mathematics, 2000
Let \(M\) be an \(m\)-dimensional compact hypersurface in the Euclidean space. The author studies the non-existence of stable integral \(p\)-currents in \(M\). The method is due to \textit{H. B. Lawson} and \textit{J. Simons}, Ann. Math. (2) 98, 427-450 (1973; Zbl 0283.53049)]. Related results can also be found in the reviewer's paper [Colloq. Math. 73,
openaire   +1 more source

rf generation of stable high bootstrap current equilibria

Physical Review Letters, 1990
Self-consistent calculations of radio-frequency (rf), current-drive requirements are presented for tokamak, magnetohydrodynamics equilibria which have been tested for stability. These stable equilibria include ones which have been chosen to have a large fraction of the current generated by the neoclassical bootstrap effect, greatly reducing the ...
, Ehst, , Evans Jr, , Klasky
openaire   +2 more sources

Ultrasensitive and Robust 120 keV Hard X‐Ray Imaging Detector based on Mixed‐Halide Perovskite CsPbBr3−nIn Single Crystals

Advances in Materials, 2022
The relatively low resistivity and severe ion migration in CsPbBr3 significantly degrade the performance of X‐ray detectors due to their high detection limit and current drift.
Peng Zhang, Yunqiu Hua, Yadong Xu, Qihao Sun, Xia Li, Fucai Cui, Lin Liu, Yanxiao Bi, Guodong Zhang, X. Tao   +9 more
semanticscholar   +1 more source

Stable source of AC voltage and current

Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510), 2004
A stable source of AC voltage up to 120 V and current up to 6 A is developed and built. The stability of the source monitored over several minutes is far under 10 ppm of full scale for voltage, current and power, and in the range of 10 ppm of full scale for voltage and current and 20 ppm of full scale for power over several hours, with the phase angle ...
Z. Mitrovic, I. Zupunski
openaire   +1 more source

1-volt ratiometric temperature stable current reference

Proceedings of 1997 IEEE International Symposium on Circuits and Systems. Circuits and Systems in the Information Age ISCAS '97, 2002
This paper presents a current reference achieving excellent behavior with regards to its temperature stability, which is able to operate under ultra-low voltage supply conditions (down to 0.9 V). Simulated results are verified by measurements on a full-custom integrated circuit.
Y. Deval, J. Tomas, J.B. Begueret, S. Dugalleix, J.P. Dom   +4 more
openaire   +1 more source

[Current Treatment of Stable Angina].

Praxis, 2015
Current therapy for stable angina includes surgical and percutaneous revascularization, which has been improved tremendously over the last decades. Smoking cessation and regular exercise are the cornerstone for prevention of further cerebrovascular events. Medical treatment includes treatment of cardiovascular risk factors and antithrombotic management,
Stefan, Toggweiler, Peiman, Jamshidi, Florim, Cuculi   +2 more
openaire   +1 more source