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Our products include wideband AC power amplifiers, AC power sources, linear frequency converters, and high frequency transformers. We also manufacture plasma power supply systems, high power piezo drivers and test systems.

The frequency range which our products cover is from 5 Hz – 800K Hz. The power ratings of our products range from 50 watts to 1500 watts as individual units. Multiple units can be combined for higher power ratings or for multiple-phase configurations.

Our products are utilized in applications such as testing of Helmholtz coils, piezo elements, circuit breakers, protective relays, lamps, watt-meters, transformers, inductors, capacitors, ferrite cores, etc. Our products are ideal for highly inductive loads and capacitive loads which require PD free powering.

Wideband Power Amplifiers

Wideband Power Amplifiers

The "HF-A" series wideband AC power amplifiers are with frequency response from 5 Hz to 800K Hz. The output voltage is 0 - 28 V rms. Custom output transformer(s) can be provided to achieve other output voltage (or current) ranges.

AC Constant Current Sources

Constant current sources provide steady output current independent of the load and input power line with variations.

AC Constant Current Power Amplifiers

Constant current power amplifiers take an input AC signal and provide steady output current independent of the load and input power line with variations.

AC Constant Voltage Sources / Amplifiers

Constant voltage sources and amplifiers provide a steady output voltage independent from the load and input power line with variations.

DC-coupled Wideband Constant Current Power Amplifier

DC-coupled Wideband Constant Current Power Amplifier

The DC-Coupled wideband constant current amplifiers have frequency response from DC to 10K Hz. The maximum output current is 0 - 5 A rms. Other output current ranges can be specified.

Multi-Phase Programmable Power Sources

Multi-phase programmable power sources are phase angle adjustable constant current mode or constant voltage mode power sources.

DC-coupled Wideband High Voltage Constant Voltage Power Amplifier

DC-coupled Wideband High Voltage Constant Voltage Power Amplifier

The DC-Coupled wideband constant voltage amplifiers provide a steady output voltage independent of variations of the loads and input power line. They have frequency response from DC to 10K Hz.

Linear Frequency Converters

Linear Frequency Converters

The linear circuitry frequency converters are fixed frequency AC power sources. They are extremly useful for powering up capacitive and inductive loads which cannot stand the switching noises.

3-phase and 6-phase Oscillators

3-phase and 6-phase Oscillators

The 3-phase and 6-phase digital oscillators are industrial grade function generators. Typical application of these phase angle adjustable 6-phase oscillators are in industrial testing and military manufacturing fields.

High Frequency Output Transformers

High Frequency Output Transformers

Custom high frequency transformers in the frequency range of 30 Hz to 800K Hz are avaialbe upon request.

High Power Piezo Drivers (Amplifiers)

High Power Piezo Drivers (Amplifiers)

High Power Piezo DriversHigh power piezo drivers are wideband AC power amplifiers with frequencies ranging from kilo Hertz to tens of hundreds of kilo Hertz. They are usually with adjustable DC bias function.

Plasma Power Supply Systems

Plasma Power Supply Systems

Plasma power supplies are high frequency high voltage systems for scientific research applications.

Digital Panel Meters

Digital Panel Meters

The ALC digital panel-mount voltage and current meters are designed with high engineering flexibility. The key features of these digital volt and amp meters are their compatibility for different output ranges and their ability for high frequency voltage and current measurements.

Test Systems

Test Systems

We produce Rate Check, Time Check, Ramp Check, Ultimate Trip, and Voltage Trip test systems using our programmable constant current sources as the core component.

Wideband Power Amplifiers (Copy)

Wideband Power Amplifiers (Copy)

The "HF-A" series wideband AC power amplifiers are with frequency response from 5 Hz to 800K Hz. The output voltage is 0 - 28 V rms. Custom output transformer(s) can be provided to achieve other output voltage (or current) ranges.