Nanosecond Pulse Generators

The Nanosecond Pulse Generator (NSP) series by Eagle Harbor Technologies (EHT) is available in either low or high power variants to easily drive capacitive loads, like dielectric barrier discharges and other low-temperature plasmas.

In a very user-friendly format, the three key output parameters of short pulses can be independently and continuously controlled by the user, on the front panel or by fiber-optic trigger. The range of adjustments are:

Voltage (kilovolts) 0 to 30
Pulse Repetition Frequency (kHz) 1 to 100
Pulse Width (nanoseconds) 20 to 500

Adjusting these values gives the user excellent pulse control with high precision timing.

All units operate at a fast rise time of 20 ns. Dielectric capacitive loads vary from 0 to 100 A current output.

EHT NSPs achieve fast output repetition rates of ultra short high voltage pulses with continuously variable output pulse lengths. High voltage isolation is integrated into the design. The units can be controlled via a fibre optic gate.

A clean square wave form is produced, although the exact pulse shape depends on the load. Further, different pulse waveforms can be achieved by adding a magnetic compression stage.

Options

Please consider the options that are necessary or advisable for your aplication, and feel free to call or write us to discuss.

Grounding Options

Floating output (cannot be grounded): This option is the standard and strongly recommend as it reduces electromagnetic noise, makes voltage measurements cleaner, and produces the fastest rise times
Positive referenced output: For applications that require grounded pulsers, the output can be internally grounded at the factory so that the pulser produces a positive voltage
Negative referenced output: For applications that require grounded pulsers, the output can be internally grounded at the factory so that the pulser produces a negative voltage

Price Range

Low power models range in price from approximately US$30,000 to over US$40,000, and high power models start around US$80,000 and exceed US$175,000 at the highest specification.

Please contact us for a quote for your specification, as each enquiry is handled individually depending on circumstances.

EHT Bilevel/Dual-Channel Pulse Generator

Two Channels for Bilevel Output Waveforms | Biomedical Plasma, Electrode Driving, Grid Biasing

The EHT BDP dual-channel pulse generator produces high-voltage square-pulses for electrode driving, grid biasing applications, and plasma sources. The two channels can be used together to produce bilevel waveforms or independently to drive two separate loads. These units are simple to operate, and allow the user to rapidly install a robust pulsed power system for plasma or biomedical applications.

Use the two channels seperately, or together to generate bilevel output waveforms
Independent, user control over pulse width and pulse repetition frequency
Fiber-optically isolated gate control
Overcurrent protection with latching logic
Operates with user's DC power supplies
Output voltage: 0 - 1000 V
Output current: 0 - 20 A
Pulse width: 100 ns - DC (droop set by energy storage and user's load)
Max pulse repetition frequency:
- 100 kHz (up to 800 V)
- 70 kHz (up to 1000 V)
Duty cycle: 0 - 100%
Control: fiber-optically isolated external gate
Number of input channels: 2
Number of output channels: 2

The Spartan

The EHT Spartan is a high-power nanosecond pulser designed to bias electrodes, capacitive discharges, and grids often used in industrial applications such as semiconductor, accelerator, surface treatment, or water purification.

Spartan features adjustable waveforms by user controlled independent pulse repetition frequency, output voltage, and pulse width. This flexibility allows the user precision control over industrial processes. The Spartan system can be directly triggered by a fiber-optic triggers or with EHT's controller that can be configured with a variety of industrial protocols.

Water cooling allows high pulse repetition frequencies at high average power levels.

Specifications

Spartan is designed to efficiently drive capacitive loads. The system has the following specifications:

Output voltage: 0-8 kV (adjustable)
External DC power supply: 15 kW
Pulse repetition frequency: 0-400 kHz (adjustable pulse to pulse)
Pulse Rise Time: <70 ns (load dependent)
Pulse Width: 50-150 ns (adjustable)

Cooling requirement: Facility Water (or 7.5 kW and 200 kHz air cooled)

Controller

The EHT controller is designed to integrate with Spartan and peripheral systems.
- Integrated pulse control
- Programmable pulse repetition frequency, number of channels, phasing
- Programmable pulse width with resolution < 1 ns, jitter < 500 ps
- Programmable duty cycle
- Readily expandable/adaptable
External DC power supply control
- Arbitrary number of DC supplies via LAN eXtensions for Instrumentation (LXI) or limited RS-232
- Configurable safety parameters
  - Current balancing for >1 DC supply
  - Voltage deviation for >1 DC supply
  - VDC soft-start/stop
Monitors operating status and system health with configurable sensor suite
- Temperature, coolant flow, relay states, interlocks, etc.
- Automatic safe shut-down and reporting on fault condition
Integrated programmable safety interlock features
Single, reconfigurable industrial interface to control entire system
Field-updatable firmware
Provides networked control and feedback via common industrial protocols

Product Spectrum

The EHT NSP range of nanosecond pulsers allows continuous and independent adjustment of voltage (kV), pulse repetition frequency (kHz), and pulse width PW (ns), apart from which it shares characteristics with fixed-value units from FID GmbH, particularly the FPG-N series, at a lower delivery lead time.

In the pulsed power category, Behlke Power Electronics GmbH make fast solid-state high voltage switches using MOSFET and IGBT technology.