- Published in issue 4/1992 on page 56
Lamp/solenoid driver Type UGQ5140K
The UGQ5140K unipolar Hall effectswitch is a monolithic IC designed for magnetic attenuation of low-power incandescent lamps or inductive loads such as relays or solenoids. Included on the chip is a darlington power output that is capable cf continuously sinking more than 300 mA. Internal protection circuitry lirnits surge (lamp turn ON) or fault currents to about 900 mA. A sensitive magnetic threshold allows the device to be used in conjuncrion with inexpensive magnets or in applications that require relatively large operating distances.