High-frequency pulse generators based on SOS diodes with subnanosecond current cutoff time

2000 ◽  
Vol 43 (3) ◽  
pp. 331-338 ◽  
Author(s):  
S. K. Lyubutin ◽  
S. N. Rukin ◽  
B. G. Slovikovskii ◽  
S. N. Tsyranov
Keyword(s):  
High Frequency ◽  
Pulse Generators ◽  
Current Cutoff ◽  
Frequency Pulse

scholarly journals Concepts and Capabilities of In-House Built Nanosecond Pulsed Electric Field (nsPEF) Generators for Electroporation: State of Art

2020 ◽  
Vol 10 (12) ◽  
pp. 4244
Author(s):  
Paulius Butkus ◽  
Arūnas Murauskas ◽  
Sonata Tolvaišienė ◽  
Vitalij Novickij
Keyword(s):  
Electric Field ◽  
High Frequency ◽  
Pulsed Electric Field ◽  
Cell Permeabilization ◽  
Pulse Generators ◽  
Nanosecond Pulsed Electric Field ◽  
Forming Characteristics ◽  
State Of Art ◽  
Frequency Pulse

Electroporation is a pulsed electric field triggered phenomenon of cell permeabilization, which is extensively used in biomedical and biotechnological context. There is a growing scientific demand for high-voltage and/or high-frequency pulse generators for electropermeabilization of cells (electroporators). In the scope of this article we have reviewed the basic topologies of nanosecond pulsed electric field (nsPEF) generators for electroporation and the parametric capabilities of various in-house built devices, which were introduced in the last two decades. Classification of more than 60 various nsPEF generators was performed and pulse forming characteristics (pulse shape, voltage, duration and repetition frequency) were listed and compared. Lastly, the trends in the development of the electroporation technology were discussed.

scholarly journals Four Channel 6.5 kV, 65 A, 100 ns-100 µs Generator with Advanced Control of Pulse and Burst Protocols for Biomedical and Biotechnological Applications

2021 ◽  
Vol 11 (24) ◽  
pp. 11782
Author(s):  
Aleh Kandratsyeu ◽  
Uladzimir Sabaleuski ◽  
Luis Redondo ◽  
Andrei G. Pakhomov
Keyword(s):  
Electric Fields ◽  
High Frequency ◽  
Short Circuit ◽  
Pulse Generation ◽  
Computer User ◽  
Pulse Generators ◽  
Advanced Control ◽  
New Research ◽  
Scientific Tool ◽  
Frequency Pulse

Pulsed electric fields in the sub-microsecond range are being increasingly used in biomedical and biotechnology applications, where the demand for high-voltage and high-frequency pulse generators with enhanced performance and pulse flexibility is pushing the limits of pulse power solid state technology. In the scope of this article, a new pulsed generator, which includes four independent MOSFET based Marx modulators, operating individually or combined, controlled from a computer user interface, is described. The generator is capable of applying different pulse shapes, from unipolar to bipolar pulses into biological loads, in symmetric and asymmetric modes, with voltages up to 6.5 kV and currents up to 65 A, in pulse widths from 100 ns to 100 µs, including short-circuit protection, current and voltage monitoring. This new scientific tool can open new research possibility due to the flexibility it provides in pulse generation, particularly in adjusting pulse width, polarity, and amplitude from pulse-to-pulse. It also permits operating in burst mode up to 5 MHz in four independent channels, for example in the application of synchronized asymmetric bipolar pulses, which is shown together with other characteristics of the generator.

scholarly journals The Effect of High Frequency Pulse on the Discharge Probability in Micro EDM

2017 ◽  
Vol 281 ◽  
pp. 012031
Author(s):  
Y Liu ◽  
Y Qu ◽  
W Zhang ◽  
F Ma ◽  
Z Sha ◽  
...  
Keyword(s):  
High Frequency ◽  
Micro Edm ◽  
Frequency Pulse

scholarly journals Transfer of diclofenac sodium across excised guinea pig skin on high-frequency pulse iontophoresis. I. Equivalent circuit model.

1990 ◽  
Vol 38 (4) ◽  
pp. 1019-1021 ◽  
Author(s):  
Tamotsu KOIZUMI ◽  
Masawa KAKEMI ◽  
Kazunori KATAYAMA ◽  
Hirohiko INADA ◽  
Kazuyoshi SUDEJI ◽  
...  
Keyword(s):  
Guinea Pig ◽  
Equivalent Circuit ◽  
High Frequency ◽  
Diclofenac Sodium ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Pig Skin ◽  
Frequency Pulse

scholarly journals Power MOSFET Linearizer of a High-Voltage Power Amplifier for High-Frequency Pulse-Echo Instrumentation

Sensors ◽  
2017 ◽  
Vol 17 (4) ◽  
pp. 764 ◽  
Author(s):  
Hojong Choi ◽  
Park Woo ◽  
Jung-Yeol Yeom ◽  
Changhan Yoon
Keyword(s):  
Power Amplifier ◽  
High Voltage ◽  
High Frequency ◽  
Power Mosfet ◽  
Pulse Echo ◽  
Frequency Pulse

The Effect of HFPD Thermally Sprayed WC-Co Coatings on the Fatigue Behavior and Deformation of Al 2024-T4

2000 ◽  
Author(s):  
A. Ibrahim ◽  
C.C. Berndt
Keyword(s):  
High Frequency ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cycle Fatigue ◽  
Pulse Detonation ◽  
Deformation Behaviors ◽  
Life Distributions ◽  
Thermally Sprayed ◽  
Al 2024 ◽  
Frequency Pulse

Abstract The effect of high frequency pulse detonation (HFPD) and HVOF thermally sprayed WC-Co coatings on the high cycle fatigue (HCF) behavior of 2024-T4 aluminum was investigated. The fatigue life distributions of specimens in the polished and coated conditions are presented as a function of the probability of failure. The monotonic and cyclic deformation behaviors of the as-received and as-coated specimens were investigated. The conclusions show that, (i) the HFPD sprayed specimens exhibited slightly higher fatigue lives compared to the uncoated specimens, (ii) the HVOF sprayed specimens exhibited significantly higher fatigue lives compared to the uncoated specimens, and (iii) the as-coated specimen was cyclically stable.

signals, namely the measurement of the partial dis-charge pulse current. The Roche coil works in mag-netic coupling, and the detecting circuit and the high-voltage circuit has no direct contact, so it is very suitable for the partial discharge site inspection in the high-voltage switchgear. 3 APPLICATION OF HIGH-FREQUENCY PULSE CURRENT SENSOR IN THE WAIST STATION FOR 35 KV SWITCH CABINET A 220 KV waist station is located on a hill, which is far from about 2 km to the north of Yang street , 4 DATA DETECTION AND ANALYSIS OF Lufeng town, Lufeng country of Chuxiong city , alti-SWITCHGEAR HIGH FREQUENCY FOR tude 1923 km, which covers an area of 22876 m PARTIAL DISCHARGE and put into production on December 25, 2009. It is one of the most important substation of Chuxiong During the 2-month testing for the Chuxiong waist Lufeng area. The main power source is supplied by station , we selected the data from April 23 to May 220 KV and 500 KV peace waist I changed back 25 in 2014 for effective analysis, and found that the line, 220 kV and waist II loop power. current data of the eight high-frequency pulse cur-rent sensor is normal, so we selected three sensor

2015 ◽  
pp. 71-73
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Direct Contact ◽  
Pulse Current ◽  
Partial Discharge ◽  
Current Data ◽  
Data Detection ◽  
The North ◽  
Effective Analysis ◽  
Frequency Pulse

High-frequency pulse currents in treatment of pressure sores. (Polish)

1979 ◽  
Vol 63 (5) ◽  
pp. 753
Author(s):  
Zygmunt Kratochwil ◽  
A Duma-Drzewinska ◽  
A Buczynski
Keyword(s):  
High Frequency ◽  
Pressure Sores ◽  
Frequency Pulse
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