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Plasma Generators and Resonant Drivers


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This page shows our plasma generators and resonant drivers
These are for energizing capacitive loads as dielectric barriers, corona generators, plasma cells for chemical studies, gas ionization and plasma generation. Unit is designed to tune out the capacity found in complex loads. This feature allows maximum transfer of real power to your intended load. The unit is capable of tuning out low capacitance in the 10-200 picofarad region. They are available for higher capacitance loads.

PVM500 Plasma Power Generator for Conventional and Complex Loads
Circuitry produces up to 300 watts with independent voltage, current, and frequency adjustment.


ADVANCED CIRCUITRY TUNES OUT CAPACITIVE LOADS, ALLOWING MAXIMUM POWER OF RESONANT SYSTEMS

capacitor
PVM500 Instructions
PVM500 Schematic
Duty Cycle Writeup
 Changing The Secondary Transformer

This reliable and flexible Plasma Driver will power conventional resistive loads such as plasma devices with internal electrodes, or Jacob’s ladders, voltage multipliers, arc generators, neon tubing and other similar devices that do not require resonant operation.

It will also power complex reactive (resonant) loads by tuning out the external capacitance to efficiently drive the resonant load, allowing high real-power operation of gas displays ionizing and igniting, DBD, chemical, ion, plasma, ozone cells, vessels, transducers and other research functions. To achieve an equivalent effect without the capacitance-tuning property of this power supply would require an extremely high output voltage. Instead, this is accomplished by simple resonance and observation of when the meter indicates the point of capacitance cancellation in complex loads. You will find this device highly valuable in this type of research. Output power may be adjusted from 10 to 300 watts, and it runs on standard 115V AC wall power (or 220 volts with optional step down transformer).

May also be used for sputtering, plasma etching, chemical vapor deposition (CVD) coating, and physical vapor deposition (PVD) coating, electro-chemical reactions, HHO gas production, and many other research functions.


Advanced Circuitry Features: 
  ● Independent voltage control from zero to maximum output 
         Maximum output depends on secondary transformer. For conventional (non-resonant) loads:
         PVM500-4000 = 20kV 18mA peak (40kV pk-pk)
         PVM500-2500 = 15kV 25mA peak (30kV pk-pk)
         PVM500-1000 = 6kV 60mA peak (12kV pk-pk)
         PVM500-560 = 4kV 90mA peak (8kV pk-pk)
  ● Independent current control from 5% to maximum output while maintaining voltage setting using duty cycle function circuitry 
  ● Independent frequency control from 20 kHz to 70 kHz 
  ● Large 3" ammeter monitors AC line current, indicates resonance peaking 
  ● Tune out the capacitance that is often a problem found in indirect capacitive coupling to plasma systems
         Capacitance load range depends on secondary transformer:
         PVM500-4000 = non-resonant loads only 
         PVM500-2500 = best for <50pfd capacitive (resonant) loads
         PVM500-1000 = best for 5-150pfd capacitive (resonant) loads
         PVM500-560 = best for 150-1000pfd capacitive (resonant) loads
  ● Non resonant voltage 0-10kV rms for direct connections to gas vessels with internal electrodes 
  ● Excellent for driving many types of complex loads 
  ● Maximum output power over 300 watts 
  ● Short circuit proof by built-in leakage reactance 
  ● 120vac 50/60 Hz input (240 vac versions available with auto step down transformer, below) 
  ● Can be used to power the smallest to the largest neon/plasma displays 
  ● Measures 7" x 4" x 10" and weighs less than 5 pounds 
  ● BNC jack for monitoring frequency output 
  ● BNC jack for TTL control
- Mainly for non-resonant loads where electrodes contact plasma (ex: gas vessels with internal electrodes) ... $549.95
- Can be used for non-resonant loads; and for resonant loads it tunes out capacitance up to < 50 pfd ... $549.95
- Can be used for non-resonant loads; and for resonant loads it tunes out capacitance 5-150 pfd ... $549.95
- Can be used for non-resonant loads; and for resonant loads it tunes out capacitance 150-1000 pfd ... $549.95
- Optional step-down transformer for international customers operating at 220VAC wall power ... $32.95
Each PVM500 version can tune out capacitive loads within the operating range of the secondary transformer, and additional secondary transformers are available for capacitances up to 50pf, 150pf and >1000pf.

Operation is made as simple as possible for all applications. Please read all data and downloads which explain the important load capabilities and technical features of these versatile devices. Then if you have any questions about the use of this device, or if your cell capacitance exceeds the listed ranges, please contact us.

PVM2000 Higher Powered Versatile Plasma Generator
Powers Non-Resonant Resistive, and Complex Resonant Capacitive Loads. Provides up to 2000 Watts of high frequency plasma energy, tunable from 20k to 70kHz. With independent voltage, frequency and current control. May be custom made to customers requested specifications.

Unit is intended for the experimenter/researcher working in plasma research physics or other similar fields. A certain amount of knowledge helps to effectively operate the unit as in some cases it must be tuned to the output capacitance and resistance of the load. This is basic boilerplate technology to any electronics engineer and may involve simple impedance matching algebraic formulas.

These units may be built to individual customer requirements. The basic unit as described can be modified within limits. Please contact our tech team to discuss any modifications or options you may need for your project.

Basic Features

  • Input: 220V single-phase
  • Included VARIAC provides total power control to the load up to 2kW
  • Voltage control: ~5kV to 50kV pk-pk output. An analog meter shows DC voltage of the power amplifier.
  • Current control: ~10% to 100% output (duty cycle provides adjustable chopped current pulses at a constant voltage). An analog meter shows current to the power amplifier and indicates resonant rises.
  • Frequency control: ~20kHz to 70kHz. A digital meter displays the operating frequency.
  • Frequency adjust control allows a smooth linear adjustment throughout the frequency range
  • Adjustable over-voltage shutdown for those high Q resonant loads that generate high peak voltage powers at resonance. Maximum voltage will depend on your load parameters.
  • The oil-filled transformer is overbuilt to handle high resonant voltage rises, and includes built-in protection circuitry that will shut the system down should the voltage exceed the transformer's insulated rating.
  • The standard transformer tunes out 10 to 200pfd capacitance, but we can build transformers to other capacitive loads; please contact us and specify your requirements.
  • Heavy-duty power switch switches both sides of the fused 220V lines
  • Optional Built-In Timer, on request
  • Power on and fault indicating lamps 
  • BNC output jack displays wave shape on oscilloscope (scope not included)
  • Dimensions: power supply = 16x12x6", VARIAC = 10x10x10", transformer = 16x8x5"
  • Total weight: ~67 lbs
  • Optional variable 50kV load TEST capacitor and air cooled resistor is available for testing. See downloadable data, and contact us for details.

 

pvm1000

 PVM2000 Instructions

 Tech Data on resonant and non resonant applications


- Ready to use for 10-200pfd capacitive loads, includes external variac for total voltage control ... $5995.00
- variable capacitor and air cooled resistor available for load testing ... $1200.00