SCHMIDT STACY

Brand Owner Address Description
SCHMIDT & STACY Schmidt & Stacy Consulting Engineers, Inc. 400 Cityplace LB 28 2711 North Haskell Avenue Dallas TX 75204 SCHMIDT AND STACY;designing and engineering high performance, low maintenance building support systems, including, but not limited to: HVAC Systems, fire protection systems, energy management systems, industrial venitlation systems, electrical lighting and power systems, uninterruptible power, dual feed and standby power systems, life safety systems, and plumbing systems.;
 

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

    
Technical Examples
  1. A method and apparatus for measuring signals conveyed by a varying the voltage polarity across the tip and ring terminals in a telephone system is disclosed. The invention provides a composite circuit including a first stage in the form of a differential amplifier, a second stage in the form of a low pass filter, and a third stage in the form of a Schmidt trigger. The invention is capable of discerning an intentional polarity reversal telephony signal by eliminating transmission noise, as well as false triggering due to a high frequency (relative to a defined threshold) ring signal.