10-700-28 - UMA AC/DC Light Inverter 24/28 Volts

10-700-28 – UMA AC/DC Light Inverter 24/28 Volts

Available now on the Airparts.aero Marketplace.

Overview

The UMA 10-700-28 is a solid-state power inverter designed specifically for aircraft instrument lighting systems. Its primary function is to convert the aircraft's 24 or 28 Volt DC electrical power into the high-voltage, high-frequency AC power required to illuminate electroluminescent (EL) lamps. These EL lamps are widely used for backlighting instrument panels, individual gauges, and annunciator panels, providing a cool, uniform, and reliable light source. The 10-700-28 is engineered by UMA Instruments, a leader in aircraft instrumentation, to be a compact, lightweight, and highly reliable power supply for modern and retrofitted cockpits.

Key Features

• Solid-State Reliability: Utilizes modern, solid-state electronics with no moving parts, providing exceptional reliability and a long service life compared to older, mechanical inverter designs.
• Optimized EL Lamp Driver: Specifically engineered to produce the optimal voltage and frequency (typically 115 VAC at 400 Hz) to efficiently drive electroluminescent lamps, ensuring maximum lamp brightness and longevity.
• Compact & Lightweight Design: Its small footprint and low weight make it easy to install behind the instrument panel without adding significant weight or complexity to the aircraft.
• Wide Input Voltage Range: Designed to operate reliably on standard 24V or 28V DC aircraft electrical systems, tolerating the voltage fluctuations commonly found during engine start and alternator load changes.
• FAA-PMA Certified: Holds an FAA Parts Manufacturer Approval, certifying that it meets the stringent quality and safety standards required for installation in certified aircraft.

Technical Specifications

• Part Number: 10-700-28
• Component Type: Solid-State DC to AC Power Inverter
• Application: Electroluminescent (EL) Lamp Power Supply
• Input Voltage: 24 to 28 VDC
• Output Voltage (Nominal): 115 VAC
• Output Frequency (Nominal): 400 Hz
• Power Output: Capable of driving multiple EL lamps, subject to total load.
• Connectors: Typically features solder terminals or a standardized connector for power input and output.
• Construction: Encapsulated electronics for resistance to vibration and moisture.
• Certification: FAA-PMA

Aircraft Compatibility

The UMA 10-700-28 is a universal component not specific to a single aircraft model. It is the preferred power source for any aircraft utilizing electroluminescent lighting panels or instruments that require a 115V, 400Hz AC input.

• Common Applications:
  • Custom Instrument Panels: Powering custom-made EL backlighting panels for a clean, modern cockpit look.
  • Individual Instrument Lighting: Driving the internal EL lamps in specific models of attitude indicators, engine gauges, and other primary instruments.
  • Annunciator & Switch Panels: Illuminating warning light panels and backlit switch labels.
  • Retrofit & Upgrades: A key component when upgrading older post-light or incandescent lighting systems to modern, uniform EL technology.

Applications

The 10-700-28 is essential for specific lighting installations:

• Cockpit Modernization: The foundational power supply for creating internally-lit instrument panels in experimental and certified aircraft.
• Instrument Repair & Overhaul: Used by instrument shops to replace failed or aging inverters for EL-lit gauges.
• New Aircraft Manufacturing: Integrated by various aircraft manufacturers as the standard power supply for their instrument and panel lighting.

Why Choose 10-700-28?

Electroluminescent lamps cannot be powered by the aircraft's native DC voltage. The UMA 10-700-28 inverter is the essential, purpose-built interface that makes this technology work. Its solid-state design provides quiet, efficient, and "clean" AC power, free from the noise and voltage spikes that can interfere with sensitive avionics. By choosing a genuine, FAA-PMA certified UMA inverter, you are ensuring a reliable and certified power source for your critical instrument lighting, enhancing nighttime visibility and safety.

Order Your 10-700-28 Light Inverter Now

Modernize your cockpit lighting with a reliable, certified power source. Visit Airparts.aero to order your UMA 10-700-28 light inverter today.

The UMA 10-700-28 inverter facilitates the phenomenon of electroluminescence. An EL lamp is essentially a capacitor where the dielectric is a layer of phosphorescent material. When a high-voltage AC field is applied across this capacitor by the inverter, the phosphor crystals are rapidly excited and release photons, producing a uniform, glowing light. The 10-700-28 is not just a simple inverter; it is an oscillator and transformer circuit specifically tuned to the capacitive load presented by EL lamps. This ensures a stable output frequency and voltage, which directly affects the color and brightness of the light. Its solid-state design also means it does not produce the high-frequency "whine" often associated with older, less sophisticated inverter technologies.

Note: Installation of this electrical component must be performed by a qualified avionics technician or A&P mechanic in accordance with the manufacturer's instructions and all applicable aviation standards. Ensure the total load of all connected EL lamps does not exceed the inverter's maximum power output rating.