Richard H Greischar

Title: Richard H Greischar: Innovator in Telecommunication Technology

Introduction

Richard H Greischar is a notable inventor based in Chicago, IL, recognized for his contributions to telecommunication technology. He holds a patent for a unique telecommunication line switching circuit that enhances the functionality of communication devices.

Latest Patents

Greischar's patent, titled "Telecommunication line switching circuit," describes an isolated line switching circuit designed for direct connection of telecommunication instruments such as telephones and teleprinters to a transmission line. This innovative circuit utilizes a solid-state optical cell that includes a light-actuated optical receiver, generating an electrical current when illuminated by an associated light-emitting device (LED). The design incorporates a switching transistor connected in series with the transmission line, ensuring efficient operation. The optical receiver drives the transistor conductive when the LED is energized by an actuation signal initiated in response to a ring signal. Additionally, a high-resistance emitter-to-base circuit for the transistor effectively drains the collector leakage current, maintaining high off resistance even at elevated temperatures.

Career Highlights

Richard H Greischar has made significant strides in his career, particularly through his work at Extel Corporation. His innovative approach to telecommunication technology has positioned him as a key figure in the industry.

Collaborations

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Conclusion

Richard H Greischar's contributions to telecommunication technology through his innovative patent demonstrate his expertise and commitment to advancing communication systems. His work continues to influence the field and showcases the importance of innovation in technology.