Horiba / PTI LPS-220B Lamp Power Supply

The Horiba / PTI LPS-220B is a regulated DC lamp power supply engineered for scientific and analytical instrumentation. It delivers stable, adjustable power to mercury, xenon, mercury/xenon, and tungsten-halogen compact arc lamps rated 75–150 W, with automatic voltage regulation and precision current control. The supply generates approximately 100 V across output terminals before ignition and requires an external lamp igniter for arc lamp operation. Manual and automatic ignition modes are selectable via front-panel controls; the IGNITE button applies 100 V to the igniter to generate a 30 kV pulse to the lamp. A digital meter displays lamp volts, watts, or amps via selector switch. Input voltage is user-selectable between 115 V and 220 V with corresponding fuse ratings (slow blow: 4 A at 115 V, 2 A at 220 V; fast blow: 10 A internal). Current regulation stabilizes lamp output after a five-minute xenon warm-up period. The unit features air cooling with internal fan ventilation through a rear-panel heat sink and color-coordinated connectors for lamp housing connections.

## Technical Specifications

• Output voltage: Up to 100 V DC prior to ignition
• Output current: Adjustable and regulated
• Lamp wattage range: 75–150 W
• Ignition pulse: 30 kV
• Input voltage (selectable): 115 V or 220 V
• Slow blow fuse ratings: 4 A at 115 V, 2 A at 220 V
• Fast blow fuse rating: 10 A
• Xenon lamp warm-up time: 5 minutes to stable regulation

## Key Features

• Automatic voltage regulation maintains desired lamp current
• Adjustable current control via front-panel knob
• Dual-mode ignition (manual and automatic switchable)
• Digital meter with selectable display (volts/watts/amps)
• Air-cooled with internal fan and rear heat sink
• Color-coordinated output connectors (red +, black −)
• External igniter interface for arc lamp operation

## Typical Applications

• Fluorescence spectroscopy
• Analytical instrumentation
• Research and laboratory measurements
• Spectrophotometric analysis

## Compatibility & Integration

• Mercury compact arc lamps
• Xenon compact arc lamps
• Mercury/xenon compact arc lamps
• Tungsten-halogen lamps
• External arc lamp igniters (do not use PTI model LPS-221 Igniter if connected via two cables)