Pulsed DC Optics Power Supply (Model 115)

Overview

The Pulsed DC Optics Power Supply (Model 115) is a high-speed, three-channel switching high-voltage system designed for dynamic ion optics control in advanced mass spectrometry applications. It is engineered for precision gating and fast voltage transitions, with synchronized control of ion trapping, release, and beam steering elements.

Key Features

• Three independent fast-switching outputs
• High-speed TTL-controlled gating capability
• Broadband amplifier functionality on each channel
• Front-panel precision controls with digital voltage display
• Comprehensive external control and vacuum interlock protection

Three Independent Fast-Switching Outputs

• Standard +/-200 V per channel
• 200 V/microsecond slew rate
• Less than 1 microsecond typical rise time
• Ripple less than 0.1% of maximum output voltage
• Designed to drive capacitive loads up to several nanofarads

High-Speed Gating Capability

• TTL-controlled High/Low state switching (0 V = Low, +5 V = High)
• Ideal for ion trap gating prior to orthogonal TOF extraction
• Multiple internal jumper configurations for flexible gating architecture
• Master gating and channel grouping options

Broadband Amplifier Functionality

• Each channel operates as a gain-of-40 broadband amplifier
• +/-5.0 V external command yields +/-200 V output
• Compatible with fast DACs and arbitrary waveform generators
• Supports high-frequency operation (hundreds of kHz)

Front Panel Precision Control

• Six ten-turn potentiometers (High and Low levels per channel)
• Manual gating and level selection
• Digital voltage display with channel selector
• Internal/External switching for both level and gating control

Comprehensive External Control

• DB15 connector for individual channel level and state commands
• Dedicated BNC external gating input
• Internal jumper selection for custom gating logic
• Supports dynamic waveform substitution and synchronized pulsing

Vacuum Interlock Protection

• Rear-panel DB9 vacuum interlock I/O
• +5 V logic enable/disable control
• Relay echo for daisy-chain interlock integration
• Interlock override switch for commissioning and diagnostics

Rack-Mount Design

• Standard 19-inch rack configuration (19 in W x 3.5 in H x 15 in D)
• Universal AC input: 100-240 VAC, 50-60 Hz
• 600 W rated input
• Proper chassis grounding required
• Approx. 15 lb (with cables)

Typical Applications

• Linear ion trap gating
• Orthogonal extraction TOF synchronization
• Ion guide offset modulation
• Quadrupole deflector pulsing
• Pre-filter/post-filter voltage switching
• Fast ion beam steering applications

Operating Modes

• Manual level and manual gating control
• Manual level with external TTL gating
• Fully external level and state control
• Dynamic waveform input with static or TTL gating
• Hybrid configurations for advanced synchronization

Important Note

This unit is designed to gate ions into the extraction region of a TOF system; it is not intended to replace a dedicated high-voltage TOF extraction pulser.

The Pulsed DC Optics Power Supply delivers the speed, voltage range, and architectural flexibility required for dynamic ion optics control in modern research and custom mass spectrometry systems, while maintaining intuitive front-panel usability and robust interlock protection.