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TREK Model 677B-L-CE High Voltage Power Supply / Amplifier — ±2kV, ±5mA
Offered for sale is a genuine Trek Model 677B-L-CE high-voltage power supply and amplifier, manufactured in the USA by Trek, Inc.
This precision laboratory instrument is designed for applications requiring accurately controlled high-voltage output. The Model 677B offers both standalone high-voltage power supply operation and amplifier operation, making it suitable for research, industrial testing, and specialized scientific applications.
Specifications:
Manufacturer: Trek, Inc.
Model: 677B-L-CE
Type: High Voltage Power Supply / Amplifier
Output Voltage Range: 0 to ±2,000 V DC or peak AC
Output Current Range: 0 to ±5 mA DC or peak AC
Amplifier Input Voltage Range: 0 to ±10 V
Nominal Voltage Gain: 200 V/V
Large Signal Bandwidth: DC to greater than 1.2 kHz
Small Signal Bandwidth: DC to greater than 5 kHz
Input Power: 90–127 VAC, 48–63 Hz (per rear label)
Operating Modes: Power Supply / Amplifier
Adjustable Voltage and Current Limit
Selectable Output Polarity
Digital Display and Monitoring Functions
High-Voltage Output Connector
BNC Monitoring and Control Connections
Country of Manufacture: USA
Typical Applications:
Electrostatic research and testing
Piezoelectric driving and control
Electro-optic research
High-voltage laboratory voltage control applications
Condition:
The instrument is in good overall used condition. It shows normal signs of prior laboratory use, including minor surface wear.
A previous calibration sticker is present on the rear panel, but the instrument is not being represented as currently calibrated.
Physical Details:
Dimensions: 4.25\" H × 8.5\" W × 16\" D
Weight: Approximately 11 lbs
Serial Number: 343
Revision: A3
Included:
One Trek Model 677B-L-CE supply/amplifier, as photographed. Any cables or accessories not specifically shown or described are not included.
Please examine the photographs carefully, as they form part of the item description.
This is specialized high-voltage laboratory equipment intended for qualified personnel familiar with appropriate electrical safety precautions.

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