POWER SUPPLY MONITOR SURGE

Brand Owner Address Description
THE HAWK Electronic Protection Devices, Inc. 217 Bear Hill Rd. Waltham MA 02154 POWER SUPPLY MONITOR AND SURGE SUPPRESSOR;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. Disclosed is a liquid crystal driving semiconductor chip capable of preventing an electrostatic-surge originated malfunction. A monitor electrode for monitoring the ground potential of an external power supply circuit is provided as separate from a ground electrode 16 for power supply, the logical level of the monitor electrode is detected by an NMOS transistor in a level monitor section and a NAND gate is controlled by the detected signal. When the ground potential in the semiconductor chip drops due to, for example, a negative electrostatic surge, the logical level of the monitor electrode increases relatively to turn the NMOS transistor on, thereby setting the detected signal to "L". As a result, the NAND gate is closed so that an enable signal from a control electrode stops being supplied to a control section, thereby preventing a malfunction originating from the erroneous enable signal.