EM-75 DC-POWER CONTROLLER 12 - 30V 3A FEATURES: • Load regulated adjustments • Adjustable base level • Two wire connection • Small size • High efficiency > 90 % • Wide power range 0.5 - 80 W • EMC -tested ( no radio frequency interference ) • Panel mountable EM-75 is a low voltage DC-power control unit. Unit is connected in series with the load. Load can be any resistive load as light bulbs and resistors, with auxiliary diode even inductive loads as solenoids, valves and motors can be controlled as well. The power is adjusted with pulse ratio method (PWM) which permits high efficiency. The change of load does not have any effect on the adjustments. As an example, if part of the bulb load is turned off it does not effect the brightness of the rest of the light bulbs. This is supposing that the operating voltage does not change. The operating voltage can be DC-voltage or pulsating DC-voltage. The unit can be connected to + or to the - side of the load. The controller can be by-passed for light bulb tests. Power stage is protected against voltage surges, overloads and short circuits. Even the incorrect polarity does not damage the unit. EM-75 causes no interferance on the radio frequency. TECHNICAL DATA: 5mm max. 23mm Supply Idle current Load capacity Load Adjustment range Base level adjustment Operating frequency Efficiency Oper. ambient temp. Dimensions Weight 30mm 12...30 Vdc < 3 mA 3 A max. 0.5 ... 80 W 0 ... 98 % 0 ... 30 % approx. 250 Hz > 90 % 0...60 °C 40*30*30 mm 60 g 10mm 40mm WIDTH 30 mm 12-30V GND (-) (+) 12-30V LOAD 2 1 CONNECTION EXAMPLE 1 S.C. POSITIVE ADJUSTMENT EM-75 GND (-) (+) LOAD 2 CONNECTION EXAMPLE 2 1 S.C. NEGATIVE ADJUSTMENT EM-75 IF LOAD IS INDUCTIVE DIODE IS ADDED (E.G. 1N5404) UNIT CAN BE BY-PASSED WITH TEST SWITCH ELECTROMEN Oy Vähäheikkiläntie 56B, 20810 Turku, FINLAND Tel. +358-2-4693050 Fax. +358-2-4693052