Differential Output Low Temperature Plasma Experimental Power Supply (CTP-2000K/S)
Product Detail
The CTP-2000K/S is the differential-output member of ACS Material's CTP-2000K low-temperature plasma power supply family — a medium-frequency (≈10 kHz) high-voltage AC source that delivers two high-voltage outputs of equal amplitude, 180° out of phase. This balanced dual drive places up to 0–60 kV (Vpp) across the electrodes, sustaining stable cold (non-thermal) plasma by dielectric barrier discharge (DBD) in reactors with large discharge gaps (up to ≈30 mm) in air, oxygen, nitrogen, and inert gases. It is built for surface modification, nanomaterial synthesis, sterilization, and plasma chemistry that call for a wide electrode gap or a balanced, floating drive.
Key features
- Dual differential high-voltage output — two outputs of equal amplitude, 180° out of phase, doubling the effective voltage across the gap for a balanced, floating drive.
- Sustains long-term, stable DBD discharge across large gaps (up to ≈30 mm) in air, oxygen, nitrogen, and other inert gases.
- Drives a wide range of DBD gas reactors and gas–solid reactors with wide electrode gaps.
- Built-in interfaces for input-power measurement and high-voltage output voltage/current detection.
- High conversion efficiency — above 90%.
Applications
Cold plasma from the CTP-2000K/S activates surfaces and drives gas-phase chemistry at near-ambient temperature, which makes it useful across materials science, surface engineering, and life-science labs:
- 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 CTP-2000K/S provides dual differential (180° out-of-phase) output for large-gap and balanced-drive experiments. The base CTP-2000K and the other variants below trade frequency, waveform, output configuration, or power for different needs — pulse modulation, microsecond pulse, 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.
Estimated frequency adjustment range by center frequency:
What's included
Each CTP-2000K/S ships as a two-part set:
- Main unit (2000K/S) — the dual differential-output high-voltage plasma power supply.
- Voltage regulator (TDGC2-1) — 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.
Because of its large discharge gap and dual differential output, the CTP-2000K/S uses a customized DBD reactor rather than the standard 50 mm DBD reactor (DBD-50, SKU#EPDBD050). ACS Material designs and supplies DBD reactor cells and coaxial DBD reactors matched to your electrode gap and geometry — contact us with your requirements.
Frequently asked questions
What does “differential output” mean on the CTP-2000K/S?
The CTP-2000K/S provides two high-voltage outputs of equal amplitude that are 180° out of phase. Driving both electrodes in opposite polarity — a balanced, floating configuration — roughly doubles the voltage across the gap compared with a single grounded output, which is what lets it sustain discharge across a larger electrode gap.
Why can it drive a larger discharge gap?
Because the differential drive places up to 0–60 kV (Vpp) across the gap, the CTP-2000K/S sustains DBD across gaps up to ≈30 mm — considerably wider than the ≤ 8 mm typical of the single-output base model.
Is the CTP-2000K/S a continuous-discharge power supply?
Yes. It delivers continuous output for long-term, stable DBD or glow discharge.
Which discharge types and gases does it support?
Dielectric barrier (DBD) and glow discharge in air, oxygen, nitrogen, and other inert gases, including operation under reduced pressure.
What is included in the package?
The main unit (2000K/S) and a voltage regulator. See the specifications above for the regulator's ratings.
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.
Which DBD reactor should I use?
The CTP-2000K/S requires a customized DBD reactor matched to its large gap and dual differential output — the standard 50 mm DBD reactor (DBD-50, SKU# EPDBD050) is used with the single-output models (CTP-2000K, /P, /A, KM, KL). ACS Material can design and supply a suitable reactor; please contact us with your experimental needs, or see our DBD Reactor page for options.
Can the frequency or power be customized?
Yes. The center frequency can be customized from 3–100 kHz, and the output power can also be customized upon request. Since the adjustable frequency range depends on the selected center frequency and configuration, please use the frequency range calculator on this product page to check the estimated range. For custom power or special frequency requirements, please contact us with your application details.
How do I measure the output voltage and current?
The supply displays input current and voltage, from which you can calculate input power. To measure the high-voltage output, use an oscilloscope with a suitable high-voltage probe; for the differential output, measure each output relative to ground or differentially across the two electrodes.
Is there an operating-temperature limit?
If the reactor is made of quartz, keep it below about 200 °C — quartz can fail by thermal breakdown above that. The power supply itself is unaffected.
How does it differ from the other CTP-2000K models?
See the comparison table above: the CTP-2000K/S provides dual differential (180° out-of-phase) output for large-gap experiments; the base CTP-2000K is the single-output medium-frequency model; the CTP-2000K/P adds modulated-pulse output; the CTP-2000K/A offers higher power (up to 1000 W); the CTP-2000KM delivers microsecond modulated pulses (~4 µs rise, ~10 µs width); 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: the base CTP-2000K, CTP-2000K/P modulated pulse, CTP-2000K/A high power, CTP-2000KM microsecond pulse, 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.