Thermo Finnigan Voltage Amplifier 5V/15KV for LCQ Duo

Thermo Finnigan 97000-98042 Conversion Dynode Voltage Amplifier (5V / 15kV)

The Thermo Finnigan 97000-98042 is a specialized high-voltage amplifier module designed for the LCQ Duo, LCQ Advantage, and LCQ Deca mass spectrometry systems. This module serves as the primary power supply for the conversion dynode, converting low-voltage input into the regulated ±15 kV required for post-acceleration ion detection. By accelerating ions toward the conversion dynode with high kinetic energy, this amplifier enables the efficient secondary emission of electrons (or ions), which are then measured by the electron multiplier. This process is fundamental to the instrument's ability to maintain high sensitivity and rapid polarity switching during complex LC/MS/MS analyses.

Technical Performance and Design

• Bipolar High-Voltage Output: Capable of generating up to ±15,000V (15 kV), allowing the mass spectrometer to detect both positive and negative ion polarities with high efficiency.

• Precision Signal Scaling: Utilizes a 5V control input to accurately scale and regulate the high-voltage output, ensuring stable detection parameters and reproducible spectral data.

• Rapid Polarity Switching: Engineered with fast-settling circuitry to support the LCQ Duo’s ability to switch between positive and negative ion modes within a single chromatographic run.

• Encapsulated Safety Design: The high-voltage components are typically potted or encapsulated to prevent electrical arcing and protect the surrounding low-voltage control electronics in the LCQ electronics bay.

Product Specifications

• Catalog Number: 97000-98042 (Revision C or similar)

• Description: Conversion Dynode Power Supply / High Voltage Amplifier

• Input Voltage: 5V DC (Control Signal)

• Output Voltage: ±15 kV DC (Maximum)

• System Compatibility: Thermo Finnigan LCQ Duo, LCQ Advantage, LCQ Deca, and TSQ Quantum series.

• Manufacturer: Thermo Finnigan (Thermo Fisher Scientific)

Key Benefits & Maintenance Applications

• Detection System Restoration: The primary replacement part for instruments failing "Conversion Dynode" diagnostics or experiencing "No Signal" errors despite a functional electron multiplier.

• Sensitivity Recovery: Essential for correcting issues where ion counts have significantly dropped due to unstable or insufficient post-acceleration voltage.

• Polarity Stability: Corrects failures where the instrument can only detect one ion polarity or experiences "Voltage Readback" errors during polarity switching.

• OEM Integration: Direct-fit replacement module designed to interface with existing Thermo high-voltage cabling and system interlocks.

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Used, excellent condition.