General Description

The VR545 Linear Power Amplifier is a high quality, air-cooled, direct-coupled audio amplifier primarily intended for use with vibration systems. Although this amplifier has been designed to directly drive low impedance loads, it can be used in any application requiring continuous duty, high quality, audio power. There are two operational modes. The amplifier can be used as either a wide-band, highly damped voltage source, or as a high impedance current source. DC and AC coupled signal inputs are provided. In order to insure long term reliability, the VR545 features protection from both over current and over temperature. Full interlock circuitry is also included. Peak voltage and RMS current bar graphs monitor output conditions. Optional, internal DC field power supplies are available for use in conjunction with Vibration Research Corporation shakers. These options provide the convenience of a single chassis power source, as well as a fully integrated power-up and cooling interlock circuitry with the power amplifier. Switched 115Vac power is provided for shaker cooling blower and control instrument requirements. The VR545 is designed for standard 19 inch rack mounted installation and can be operated on 100, 120, 200, 220 or 240V, 48-62 Hz power.

Features

• Output: 50V, 1000 VA
• Direct coupled input and output allows DC operation
• Linear output stage provides low noise and distortion
• Optional internal shaker field supplies
• Automatic over temperature and over current protection
• Two operational modes, voltage or current source
• External interlock circuitry

Amplifier Parameters