REGULATED AC TO DC POWER CONVERTER
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Pot Control Models: LT-252-400-4,
LT-270-400, LT-2100-400 Voltage Control Models: LT-253-400, LT-253A-400, LT-273-400, LT-2103-400 |
These converters transform an unregulated 115 VAC 400 Hz to a regulated and adjustable DC output via a remote control potentiometer or voltage for voltage controlled models. The LT-2XX-400 Series is a pulse width-modulated AC to DC converter that provides regulated DC power output.
The LT-2XX-400 Series is primarily designed to control the light intensity of incandescent bulbs in vehicle lighting systems. For special orders any two combinations of LT-52A, LT-53, LT-70, LT-73, LT-100 and LT-103 dimmer units may be configured in a single box.
Features:
- State of the art design for regulation and positive logic for output overvoltage protection.
- Other LT-2XX-400 Series available in various output voltage and power ratings in the same package, or special units can be provided for various output combinations.
- A panel mount trim pot is provided for the voltage control series to control 0-5 VDC output via 0-3 to 0-5 VDC.
- A test jack is provided to monitor output voltage.
- Designed to meet various applicable portions MIL-STD 704 notice 3, MIL-STD-202 and MIL-T-5422F class 1A.
- The Model LT-2XX-400 Series is serviceable, small and lightweight (42 watts per pound and 1.7 watts per cubic inch)
Specifications: |
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| Input Voltage: | 115 VAC ± 10% @ 400 Hz. |
| Output Voltage: | Adjustable with external 5K ohm, 1/2W rheostat or voltage 0-3 VDC to 0-5 VDC. |
| Regulation: | 2% for line, 2% load and 2% temperature. |
| Output Ripple: | 25 mVp-p or less. |
| Protection (Overload): | Input and output currents pulse when overload exceeds approximately 125% of rating. |
| Protection (Overvoltage): | Output voltage is limited to approximately 125% of rating eventhough remote control rheostat opens or internal failure occurs. |
| Temperature: | -55°C to +71°C (sufficient cooling required @ +71°C ambient) |
| Altitude: | 55,000 Feet. |
| Size: | 6.5" L x 6.7" W x 2.4" H. 16.5 cm L x 17 cm W x 6 cm H |
| Weight: | 3.6 lbs. (1634 grams). |
| LT-2XX-400 SERIES | LT-252-400-4 LT-253-400 |
LT-270-400 LT-273-400 |
LT-2100-400 LT-2103-400 |
LT-253A-400 |
| Max. Power Rating (watts) | 100 | 150 | 200 | 75 |
| Input Voltage (VAC) @ 400 HZ | 105-125 | 105-125 | 105-125 | 105-125 |
| Input Current (ARMS) @ FL @ 115 VAC | 1.6 | 2.0 | 2.8 | 1.2 |
| Output Voltages DC two parallel | 0 to 5 | 0 to 12 | 0 to 28 | 0 to 5 |
| Output Current (ADC) Total | 0-20 | 0-12 | 0-7 | 0-15 |
CONNECTOR |
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| PIN NUMBER | DESCRIPTION J1 | REMARKS |
| A | 115 VAC 400Hz AC input | 105 VAC to 125VAC |
| B | 400Hz AC input Ret. | Isolated |
| C | Output control | 0-5K Pot or 0-3 VDC to 0-5 VDC * |
| D, E | DC Output | Two output in Parallel Operation |
| F, G | DC Return | Chassis Ground |
| J2 | Output Voltage Test Point | |
* Control range by a panel mount Trim Pot.
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