Microsecond Pulse Low-Temperature Plasma Experimental Power Supply (CTP-2000KM)
Product Detail
The CTP-2000KM is the microsecond-pulse member of ACS Material's CTP-2000K low-temperature plasma family — a medium-frequency (≈10 kHz) cold-plasma source whose internal pulse-transformer circuit delivers fast, repetitive microsecond high-voltage pulses (≈4 µs rise, ≈10 µs width) at up to 0–20 kV peak-to-peak. The fast-rising pulses suit dielectric barrier discharge (DBD), glow, and jet/spray-gun plasma for surface activation, nanomaterial synthesis, sterilization, and plasma chemistry, with the pulse polarity selectable at the time of purchase.
How the CTP-2000KM works
CTP-2000KM uses an internal high-frequency switching and pulse-transformer circuit to convert the regulated AC input into repetitive microsecond high-voltage pulses. The external voltage regulator controls the pulse amplitude, while the front-panel frequency knob adjusts the pulse repetition frequency around the 10 kHz operating point. The pulse width and polarity are hardware-configured; the polarity can be selected at the time of purchase.
Key features
- Generates repetitive microsecond high-voltage pulses (≈4 µs rise, ≈10 µs width) from an internal high-frequency switching and pulse-transformer circuit.
- Pulse amplitude set by the external voltage regulator; pulse-repetition frequency adjusted around the ≈10 kHz operating point with the front-panel knob.
- Selectable pulse polarity — hardware-configured and chosen at the time of purchase.
- Drives dielectric barrier (DBD), glow, and jet/spray-gun discharge in air and a range of gases.
- Built-in interfaces for HV output voltage and current detection (both resistance-sampling and capacitance-sampling) for oscilloscope waveform, Lissajous-figure, and output-power measurement.
- Ships with a voltage regulator and is compatible with standard DBD reactors.
Applications
The CTP-2000KM's fast microsecond pulses sustain cold plasma at near-ambient temperature for surface and gas-phase processing:
- Surface modification of organic and inorganic materials — improving the compatibility of different polymer surfaces, enhancing the wettability of biological surfaces, and coating or cladding nanomaterials.
- Preparation of organic or inorganic nanoparticles via plasma-assisted routes.
- Cleaning and sterilization of surfaces and components.
Compare the CTP-2000K family
The base CTP-2000K covers most atmospheric-pressure DBD, glow, and arc experiments. The variants below trade frequency, waveform, output configuration, or power for specialized needs — the CTP-2000KM shown here delivers microsecond pulses; other models offer modulated pulse, dual differential output, low-frequency high voltage, or higher power.
| Specification | CTP-2000K Base model |
CTP-2000K/P Modulated pulse |
CTP-2000K/A High power |
CTP-2000K/S Differential output |
CTP-2000KM Microsecond pulse |
CTP-2000KL HV low-frequency digital · New |
|---|---|---|---|---|---|---|
| Output voltage, Vpp (kV) | 0–30 (customizable) | 0–30 (customizable) | 0–20 (customizable) | 0–60 (customizable) | 0–20 | 0–30 (customizable) |
| Output power (W) | 0–500 | 0–500 | Standard 0–500; Premium 0–1000 | 0–500 | 0–500 | 0–500 |
| Frequency type | Medium-frequency | Medium-frequency | Medium-frequency | Medium-frequency | Medium-frequency | Low-frequency |
| Center frequency (Fo)1 | ≈10 kHz (customizable 3–100) | ≈10 kHz (customizable 3–100) | ≈10 kHz (customizable 3–100) | ≈10 kHz (customizable 3–100) | ≈10 kHz | ≈50 Hz |
| Frequency adjustment range | 5–20 kHz (customizable) | 5–20 kHz (customizable) | 5–20 kHz (customizable) | 5–20 kHz (customizable) | 8–15 kHz | 50–200 Hz |
| DBD discharge gap2 | ≤ 8 mm | ≤ 12 mm | ≤ 8 mm | ≤ 30 mm | ≤ 4 mm | ≤ 8 mm |
| Output waveform | Sine wave | Modulated pulse | Sine wave | Sine wave | Microsecond pulse | Sine wave |
| Rise time (µs) | — | — | — | — | ≈4 | — |
| Pulse width (µs) | — | — | — | — | ≈10 | — |
| Output configuration3 | Single HV output | Single HV output | Single HV output (customizable) | Dual HV outputs, equal amplitude, 180° out of phase | Single HV output (customizable) | Single HV output |
| Input power requirement4 | Single-phase 220 V AC ±10% (110 V via step-up transformer) | |||||
| Dimensions W×D×H (mm) | 250×250×360 | 250×250×360 | 250×500×370 | 250×250×380 | 250×250×360 | 400×400×780 |
| Weight (kg) | 8 | 9 | 25 | 12 | 9 | 58 |
| Included components | Main Machine + Voltage Regulator | Main Machine + Voltage Regulator + Digital Pulse Modulator | Main Machine with integrated Voltage Regulator + R16 Control Port (customizable to TTL or other interfaces) | Main Machine + Voltage Regulator | Main Machine + Voltage Regulator | Main Machine with integrated Voltage Regulator + digital control system |
- The ≈10 kHz center frequency is calibrated using the ACS 50 mm DBD reactor (SKU #EPDBD050); customization may incur additional charges.
- DBD-50 reactor compatibility: the CTP-2000K, CTP-2000K/P, CTP-2000K/A, CTP-2000KM, and CTP-2000KL are compatible with the standard DBD reactor; the CTP-2000K/S requires a customized DBD reactor.
- Custom configurations are available on request to meet specific experimental requirements.
- For 110 V AC sources, a step-up transformer is recommended to convert 110 V to 220 V; if powering both the main unit and voltage regulator through the same transformer, use one rated at 2000 W or higher.
What's included
Each CTP-2000KM ships as a two-part set, with the DBD reactor available as an optional accessory:
- Main unit (2000KM) — the microsecond-pulse high-voltage plasma power supply, with a front-panel pulse-repetition-frequency knob and HV output voltage/current detection interfaces.
- Voltage regulator — rated input 220 V, 1 kVA, 50/60 Hz; output range 0–250 V; rated output current 4 A; single phase; 6.5 kg; insulation class F.
The matching dielectric barrier discharge cell used to operate the CTP-2000KM. Compatible with the CTP-2000K, CTP-2000K/P, CTP-2000K/A, CTP-2000KM, and CTP-2000KL. ACS Material also offers coaxial DBD reactors and additional DBD reactor cells for different geometries.
Frequently asked questions
What kind of output does the CTP-2000KM produce?
Repetitive microsecond high-voltage pulses — roughly a 4 µs rise time and 10 µs pulse width, at a repetition rate around 10 kHz. An internal high-frequency switching and pulse-transformer circuit converts the regulated AC input into these pulses.
How are the pulse amplitude and frequency controlled?
The external voltage regulator sets the pulse amplitude, and the front-panel frequency knob adjusts the pulse-repetition frequency around the 10 kHz operating point. The pulse width is hardware-configured.
Can I choose the pulse polarity?
Yes. The pulse polarity is hardware-configured and can be selected at the time of purchase (see the selectable-waveform figure above).
Which discharge types and gases does it support?
Dielectric barrier (DBD), glow, and jet/spray-gun discharge in air and a range of gases, across DBD discharge gaps up to about 4 mm.
How do I measure the output voltage and current?
Connect an oscilloscope to the HV output voltage detection interface and the HV output current detection interface. The resistance-sampling interface (50 Ω sensing resistor) reads the instantaneous current; the capacitance-sampling interface (0.47 µF) reads the current integral for Lissajous-figure and output-power measurement. The voltage detection divider is approximately 1:1000 (47 pF / 47,000 pF), so calibrate for precise voltage readings.
What dielectric and reactor should I use?
A quartz-glass dielectric, 90 mm diameter (or 90 × 90 mm square), 0.5–3 mm thick. If the dielectric is too thin, creeping (edge) discharge may occur. The matching DBD-50 reactor is recommended.
What power input does it need?
Single-phase 220 V, ±10%. For 110 V supply regions, use a step-up transformer; when powering the main unit and voltage regulator together, a 2000 W transformer is recommended.
How does it differ from the other CTP-2000K models?
See the comparison table above: the CTP-2000KM delivers microsecond pulses (≈4 µs rise, ≈10 µs width); the CTP-2000K/P adds digital modulated-pulse output (1–1000 Hz, 1–99% duty); the CTP-2000K/A offers higher power (up to 1000 W); the CTP-2000K/S provides dual differential (180° out-of-phase) output; and the CTP-2000KL is a low-frequency (≈50 Hz) digital model.
What warranty applies?
Every model includes a one-year warranty with free remote maintenance support (excluding shipping). All plasma power supply models are sold as nonrefundable items.
Related products & resources
- Learn the fundamentals: What Is Plasma? Cold Plasma, DBD Reactors, Applications & Power Supplies and Dielectric Barrier Discharge (DBD): Reactors, Physics & Power — our complete guides to cold-plasma generation, DBD reactor physics, and choosing a power supply.
- Browse the full line: Plasma Power Supply series, including CTP power supplies, DBD reactors, parametric supplies, plasma-jet generators, and plasma-torch systems.
- Pair it with a reactor: DBD experiment device (DBD-50) and coaxial DBD reactor.
- Other power supplies: CTP-2000K base model, CTP-2000K/P modulated pulse, CTP-2000K/A high power, CTP-2000K/S differential output, and CTP-2000KL low-frequency digital.
Return policy: all plasma power supply models are sold as nonrefundable items. Each model includes a one-year warranty with free remote maintenance support (shipping costs excluded); after the first year, remote maintenance is available at an additional charge based on the equipment's needs. Disclaimer: ACS Material LLC believes the information on this page is accurate and current but makes no warranties, express or implied, regarding suitability for any purpose or the accuracy of the information, and will not be responsible for damages resulting from its use.