DC superimposed AC high voltage: A new strategy for transferring stable He atmospheric pressure cold plasma bullets through long dielectric tubes

2017 ◽  
Vol 24 (6) ◽  
pp. 063521 ◽  
Author(s):  
S. N. Siadati ◽  
F. Sohbatzadeh ◽  
Azadeh Valinataj Omran
Keyword(s):  
High Voltage ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
New Strategy

A High-Voltage Terminal for a Field-Emission Gun

1972 ◽  
Vol 30 ◽  
pp. 428-429
Author(s):  
N. F. Ziegler
Keyword(s):  
Field Emission ◽  
High Voltage ◽  
Atmospheric Pressure ◽  
Power Supplies ◽  
High Coherence

A high-voltage terminal has been constructed for housing the various power supplies and metering circuits required by the field-emission gun (described elsewhere in these Proceedings) for the high-coherence microscope. The terminal is cylindrical in shape having a diameter of 14 inches and a length of 24 inches. It is completely enclosed by an aluminum housing filled with Freon-12 gas at essentially atmospheric pressure. The potential of the terminal relative to ground is, of course, equal to the accelerating potential of the microscope, which in the present case, is 150 kilovolts maximum.

scholarly journals Electrical Supply Circuit for a Cold Plasma Source at Atmospheric Pressure Based on a Voltage Multiplier

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2132
Author(s):  
Ovidiu S. Stoican
Keyword(s):  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Plasma Source ◽  
Electrical Circuit ◽  
Jet Formation ◽  
Voltage Multiplier ◽  
Voltage Output ◽  
Intermediate Output ◽  
Electrical Supply ◽  
Lower Voltage

A cold plasma source operating at atmospheric pressure powered by a voltage multiplier is reported. In addition to its usual high voltage output, there is an intermediate output of lower voltage and higher current capability. A discharge current is drawn from both outputs. The ratio of the current supplied by each output depends on the operating state, namely, before or after the plasma jet formation. The electrical circuit is equivalent to two dc sources connected in parallel, used to initiate and sustain the electrical discharge. The plasma source is aimed to study the effect of cold plasma on the surface of various liquid or solid materials, including polymers.

scholarly journals In-package atmospheric pressure cold plasma treatment of cherry tomatoes

2014 ◽  
Vol 118 (2) ◽  
pp. 177-182 ◽  
Author(s):  
Nrusimha Nath Misra ◽  
Kevin M. Keener ◽  
Paula Bourke ◽  
Jean-Paul Mosnier ◽  
Patrick J. Cullen
Keyword(s):  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Cherry Tomatoes

Development of a combinatorial atmospheric pressure cold plasma processor

2004 ◽  
Vol 223 (1-3) ◽  
pp. 259-263 ◽  
Author(s):  
Takeshi Terajima ◽  
Hideomi Koinuma
Keyword(s):  
Atmospheric Pressure ◽  
Cold Plasma

The Research of Atmospheric Pressure Cold Plasma Jet Generated by Auto-Excited-Pulsed DC Discharge

2014 ◽  
Vol 989-994 ◽  
pp. 1200-1203
Author(s):  
Ye Lin Hu ◽  
Qiu Wang ◽  
Zhao Quan Chen
Keyword(s):  
Power Supply ◽  
Discharge Current ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Pulse Frequency ◽  
Dc Discharge ◽  
Pulsed Dc ◽  
Piezoelectric Ceramic Transformer

In order to obtain stable cold plasma jet under atmospheric pressure condition, we designed a high-voltage DC power supply based on the principle of multilayer piezoelectric ceramic transformer (MPT). At the same time, we developed a cold plasma jet device that its shape is similar to the gun structure. The total weight of device, including the power supply and the generator, is less than 500 g. In the experiments of argon plasma under atmospheric pressure, current–voltage measurements show that the discharge actually appears periodically pulsed with a frequency of about 30 kHz. The discharge current has a pulse-width that is about 100 ns, while its peak value reaches about 32 mA. The maximum length of the plasma is about 3 cm. The further study showed that the discharge current pulse frequency is determined by the ion drift mechanism.

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