FAA TSO-C71 REGULATED DC TO DC CONVERTER
 LIGHT DIMMER

The LT-SERIES is a pulse width-modulated DC to DC converter that provides regulated DC power.  This converter transforms an unregulated 28 VDC to a regulated and adjustable DC voltage output via a remote control potentiometer.

The LT-SERIES is primarily designed to control the light intensity of incandescent bulbs in aircraft lighting.  The LT-52A, LT-70 and LT-100 converters are FAA TSO-C71 recognized for airborne applications.



 

 




LT-52A, LT-70, LT-100

Features:

  • State of the art design for regulation and positive logic for output overvoltage protection.
  • Other LT-SERIES available in various output voltages and power ratings in the same package size.
  • The LT-SERIES is serviceable, small and lightweight.
  • Maximum output voltage is adjustable with an internal trim pot.
  • Designed to meet various applicable portions MIL-STD 704 notice 3, MIL-STD-202C and MIL-T-5422F class 1A.

Specifications:
Input Voltage: 28 VDC nom., 20 TO 40 VDC.
Output Voltage:   Adjustable with external 5K ohm, 1/2 W rheostat
Regulation:   2% for line, 2% load and 2% temperature.
Output Ripple:   25 mVp-p.
Protection (Overload):   Input and output current pulse when overload exceeds approximately 125% of rating.
Protection (Overvoltage):   Output voltage is limited to approximately 125% of rating even though   remote control rheostat opens or shorts, or internal failure occurs.
Temperature:   -55°C to +71°C (sufficient cooling required @ +71°C ambient)
Altitude:   To 55,000 Feet.
Size:   2.3" H x 2. 3" W x 5.8" L.
  5.7 cm H x 5.7 cm W x 14.6 cm L
Weight:   1.5 lbs. (683 grams).
Compliance:   FAA TSO-C71

 

Characteristics  LT-52A   LT-70  LT-100
Max VA Rating  50 70  100
 Input Voltage (VDC)  20 to 40  20 to 40  20 to 40
 Input Current (ADC)
@20 VDC In
@ 28 VDC In
3.2
2.3
4.0
3.2
5.8
4.2
 Output Voltage (VDC)  0 to 5  0 to 12  0 to 28
 Output Current (ADC)  10  5.8  3.6
 Efficiency  77  78  84

 

Pin Description:
  PIN NO.  DESCRIPTION  REMARKS
 A  +28 VDC input  20 to 40 VDC
 B  Common Ground  Input/output return
 C  + VDC Output  Adjustable DC Output
 D  Remote Control  5K ohm rheostat to ground.
 E  Spare  NC

 

Model  Mating Plug Receptacle
 LT-52A  KPT-06A-14-5S  PT-02E-14-5P
 LT-70  MS3106A14S-5S-X  MS3102A14S-5P-X
 LT-100  MS3106A14S-5S  MS3102A14S-5P

OUTLINE DRAWING

EXTERNAL WIRING

 INPUT VS. OUTPUT VOLTAGE
KGS Electronics Home On-line Catalog Service Centers
Catalog Request info@kgselectronics.com Contact Information