http://www.jinstartech.com/

General Attributes:

AE Techron 7548 very good price

Up to 100 Ap/195 Vp, DC to 100 kHz, Three-Phase

• Field-selectable controlled-voltage or controlled-current operation
• Can be switched between rail supply modes to optimize for various load impedances
• Protection circuits guard against over/under voltage, over current, over temperature, and circulating ground currents

Key Performance Capabilities:

• Over 12,000 watts peak for 40 ms and 5,500 watts peak continuous into a 1Ω load
• 40 ms pulses of up to 105 Ap into a 1Ω load
• Frequency bandwidth of DC-50 kHz at rated power; DC-100 kHz at reduced power
• Continuous system output of 800 Vp or 170 Ap maximum are possible with multiple, interconnected amplifiers

OVERVIEW

The 7548 amplifier is a DC-enabled, high-powered unit designed to provide very low noise and fast slew rates. A single 7548 has an output capability of 100 amperes peak and 200 volts peak when driving typical MRI gradient coil loads. It can output a 40 ms pulse with up to 105 amperes peak current into a 1-ohm load. If more current is needed, up to four amplifiers can be combined in series or parallel and operate as a single system.

The 7548 can operate in either voltage or current mode and features robust output devices and a power range of over 3300 watts RMS. It can safely drive a wide range of resistive, inductive loads.

Typical use includes as a power source for EMC testing in applications that require both continuous AC or DC signals and significant short term (burst) signals. It can be combined in a three-phase system ideal for MIL-STD-704F (AC and 28V DC tests).