DANFYSIK Part of Danish Technological Institute

Description

The Model 892 Shim Amplifi er is capable of dealing with the challenge brought by fast MRI imaging: maintaining a constant shim current in the presence of extremely strong gradient pulses. The Shim Amplifi er is based on high-gain, dual stage current amplifi ers with linear output stages, capable of high-current DC drive and high-bandwidth AC compliance controlling the injection of energy into the RT shim system.

Data

• Current stability

• - short (30 min.)

• -long (8 hours)

  ±25ppm

• Max. output current

  ±10 A

• Max. output voltage

  ±60 V

• Max. output power

  600 W

• Output ripple voltage

• Current setting

  15 bit+ sign

• Air cooled version

  no

• Std. remote control*

  RS232

• Technology

  Linear output stage with a switch mode pre-regulation

• Options:

• - Polarity reversal sw

  no

• - Energy dump circuit

• Application example

  Steers and (up to 6 output channels in one rack)

• 19 inch rack mount