Model Numbers: 

Military Night Vision
Aircraft Instrument Lighting
Run High & Low Power LED's
Run High & Low Power LAMP's

Avionics Lighting Power Supply  

Designed for All Lighting Needs

  VDC output:
5 / 14 / 28 VDC

Made in USA

DC Volts Input:
 19 - 32
 AC Volts Tracking
  0 - 115
0 - 5


Extend your LAMP bulbs life by 5 Years 
with our
Soft Start Electronics 

 DC Volts Tracking

0 - 28


Modes Voltage


output:  0 - 28 Vdc / 0 - 14 Vdc / 0 - 5 Vdc

Amps out:
 See Model

 Short circuit protection
 Over voltage Protection
 Half Bright Dimming
 Humisealed PCB

 Fused Input
 Low EMF
 Programming Voltages
 Vibration Resistance

Power Watts:
 See Model
Weight LB:



High Efficiency  


Size: L 5.5" x W 3.45" x H 1.75"


  0 To 55,000 Feet


  100,000 Run Time Hours    

Night Vision:

  Consult factory for custom slew rates and other options.


  This unit come with a full 1 year guarantee!     


 Built to Meet FAA                  TSO-C71  ( FAA / DOT Obsolete )
 Built to Meet FAA DO-160    EMI / RFI  Testing
 Built to Meet FAA DO-160    Conducted & Radiated Testing
 Built to Meet FAA DO-160    Water & Vapor Testing
 Built to Meet FAA DO-160    Pulsed Voltage Input Testing
 Built to Meet FAA DO-160    All DO-160 unit testing must be done by customer.

  The TPS-28D Meets all required FAA Category's for FAA approval

 Optional Military:  'DO-160  Category Specifications - Call factory for price. 
 Optional Military:  'DO-160  Temperature Range -40 to +85C        Option Z
 Optional Military:  'DO-160  Power Input: Catgory Z  (high surge)  Option X
 Optional Military:  'DO-160  / Options     Z and X     Special Order Only
 Optional Military:  All DO-160 unit testing must be done by customer.!


25 Pin Gold
"D" Connector Kit #18 wire crimp pin (mating)

. .Positronic Connector
   Kit comes with every


Models Continous Current Amps
Peak Max Current 30 sec. Peak Max Current 5 sec
(Special Order)
Category B
2.5 Amps 3.0 Amps 5.0  Amps
Category B
(In Stock)
5.0 Amps 6.5 Amps 10 Amps
Category B
(Low Stock)
(Special Order)
7.0 Amps 8.5Amps 11 Amps

Category  "B"  is for General & Commercial Aircraft
Cat B operation 0 to 28 VOLTS output OPERATION Continous Operation of unit @ -15C to +70C
Operation Input Voltage of 19 - 32 Volts.
Built with 100% Reliable  "Through Hole Technology"   

 The TPS-28D is electrically compatible with the TPS-28C - no wiring changes..!
To sub for the TPS-28C use the TPS-28D-10B


( Requires Adobe Acrobat Reader )
We have updated the TPS-28D Manual   Date: 3/3/2020
Manual & Electrical & Mechanical / PDF / DXF  Horizontal Drawings



What kills most of your bulbs or lamps in an aircraft?  Your startup of the electronics. When you flip the power switch you get a huge inrush of current into the lamps or bulbs until the electron current heats up the filament.  during that heat up time the filament wiggles and wobbles causing  fractures in the filament to start to break.  Then months later you lamp is out and your are back to the avionics shop for a bulb change and a costly repair. 

The TPS-28 eliminates all that cost.  with our soft start circuit, The TPS-28 limits that inrush electron current. Saving you hundreds of dollars and hours of repair time at the avionics shop.  

Tired of having this!

the other guys lighting controller

Then have this!

TPS-28 lighting controller

Cost Saving  - operation of an Aircraft

Here is a typical scenario.  You have 28 V and you want to get to 5 Volts @ 6 Amps, so you think "I will use some power resistors or a linear regulator because they are cheap"!!!  You just cost the customer 200 watts of needless power and heat every hour he runs the aircraft. On top of that you may be burning up your aircraft generator. 

What does it cost in fuel? Well if you do the math, 200 watts comes out to be about 1/4 of a horse power to the engine. It does not sound like much but add that fuel cost in and after hours of flying its like adding another person to the aircraft. You have burned up thousands of dollars of fuel. In the long run, those cheap power resistors ended up costing your customer lots of money.  

Here is the answer

What is the difference between a linear regulator and resistors verses the TPS-28? Well, everything in the world. The TPS-28 is a switching power supply  that only takes a small amount of power to get to the 5 Volts or  to whatever voltage you need.  Switching regulators use charging circuits and do not dissipate large amounts of heat to do the power conversion.  Is there any other way of doing low cost power conversion? NO, not unless you can change physics.  The TPS-28 has an efficiency of about 90%. That's 80% better than power resistors or a linear regulator.  The real answer to the question is this:  In a very short time the TPS-28 more than pays for itself just in lower fuel costs.. 

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