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 Expert  724616

Expert in Analog Electronic Circuitry, Semiconductor Products, Triac, Ground Fault Circuitry, Photometry


Available for your Consulting and Expert Witness Needs

North Carolina (NC)
USA
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise: Listed with other top experts in: 
Expert, in his eight years as Application Engineer for GE power semiconductor products, has created hundreds of analog circuits for the products of numerous companies, large and small. He also provided circuit analyses and problem solutions for myriad thyristor (SCR and Triac) applications. He helped create the Triac, and patented the triac circuit used in today's residential lamp dimmers.

Expert was the author of numerous professional papers and magazine articles, and wrote several chapters in GE's SCR MANUAL. He created many circuits and applications for light activated switches and SCRs, becoming adept in basic photometry. Expert was adjunct professor of Electronics at University of Hartford, teaching Fundamentals of Electronics for Junior year students.

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analog circuit

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analog circuit design

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circuit design

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electronic circuit

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electronic circuit analysis

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electronic circuit design

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electronic circuit element

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power semiconductor device

Expert created both discrete-component and custom-integrated-circuit developments and designs for electronic trip units for GE's low voltage molded case circuit breakers: “SelecTrip”; “VersaTrip”; and “MicroVersaTrip". He was also instrumental in the design of the current transformers that provided both signal and power for the trip units. He conducted research into very high speed current interruption that limited short circuit fault current and eliminated arcing.
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arcing fault

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circuit breaker

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custom integrated circuit

Expert developed the photoelectric control for GE's streetlight products using cadmium sulfide photoconductors, replacing the earlier vacuum tube design. He worked closely with CdS vendors in improving the life and reliability of the photoconductors by eliminating the migration of electrode material through the semiconductor. He wrote a "white paper" on photoelectric controls for AIEE, which included photometric data he derived for daylight at twilight hours for the full range of US latitudes.
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cadmium sulfide cell

GE's first Ground Fault Circuit Interrupter circuit breaker, CB-3, electronics was developed by Keith, including a custom linear (analog) integrated circuit chip. He subsequently designed the electronics for the GE GFCI receptacle. He assisted Underwriters Laboratories in development of their Standards for GFCI products in the transient high voltage surge protection criteria and test equipment circuit. Expert also designed the differential current sensor transformers and the grounded neutral signal transformers for the GFCI circuits.
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ground fault protection

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ground-fault interrupter

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linear integrated circuit

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ground


Show Secondary and Basic Areas of Expertise
Localities:
Expert may consult nationally and internationally, and is also local to the following cities: Charlotte, North Carolina;  Asheville, North Carolina;  Gastonia, North Carolina;  Knoxville, Tennessee;  Johnson City, Tennessee;  and Greenville, South Carolina.

Often requested
with this expert:

Electrical Wiring Devices, Circuit Breakers, GFCIs, AFCIs,...
High Voltage Materials
Electrical Power Generation and Control--Design, Project...
AC Motor Drives, Variable Speeds

Education:
Year   Degree   Subject   Institution   Honors
1948   BEE   Electrical Engineering   N. C. State University   With Honors
1951   none   Creative Engineering   General Electric Co.   #1 in class

Work History:
Years   Employer   Department   Title   Responsibilities

1972 to 1987

 

General Electric Co.

 

Distribution Equipment Dept.

 

Consulting Engineer

 

Created electronic circuit and product design for Ground Fault Circuit Interrupters, both circuit breaker and receptacle models. Designed circuits, including custom and semi-custom integrated circuits for GFCIs and for molded case circuit breaker electronic trip units, and designed the current transformers for these. Invented means for arcless and current limiting interruption of short-circuit fault currents.

1969 to 1972

 

General Electric Co.

 

Integrated Circuit Products Dept.

 

Manager, Automotive and Appliance Custom Design Engineering

 

Hired and managed a group of five electronics engineers and one technician. Worked with customers and factory to develop application-specific custom integrated circuits. Company terminated entire department.

1968 to 1969

 

General Electric Co.

 

Semiconductor Products Dept.

 

Manager, Automotive & Appliance Application Engineering

 

Hired and managed five electronics engineers assisting customers in the application of power semiconductors.

1967 to 1968

 

General Electric Co.

 

Radio Receiver Dept.

 

Manger, Transcription Products Engineering

 

Initiated project and led 4 engineers in the development of a telephone answering machine, which was aborted after problems with Bell Telephone restrictions. Negotiated adaptation of Phillips cassette for GE tape recorder, setting the standard in the U.S. market.

1962 to 1967

 

General Electric Co.

 

Semiconductor Products Dept.

 

Application Engineer

 

Developed circuits and assisted in specifications and testing for applications of GE power semiconductors. Participated in the creation of the "Triac" for control of AC power, and created the circuit using it in all present day residential lamp dimmers. Wrote and presented hundreds of industry and technical society technical papers, magazine articles, newsletter items, and co-authored four editions of GE's SCR MANUAL and HOBBY MANUAL.

1955 to 1962

 

General Electric Co.

 

Outdoor Lighting Dept.

 

Advance Development Engineer

 

Researched, developed, and designed GE's first solid state photo-electric control for streetlights, and wrote AIEE tutorial paper on the subject. Created starting and ballasting controls for 2KW and 5KW xenon searchlights. Designed and built instrument for locating short circuits on printed circuit boards used in the manufacturing of electronic traffic signal controllers.

1951 to 1955

 

General Electric Co.

 

Television Receiver Dept.

 

Advanced Development Engineer

 

Developed improved horizontal sweep circuitry. Developed and designed GE's first portable B/W television set. Initiated project to develop a TV remote control, aborted for financial reasons.


Career Accomplishments:
Associations/Societies

Life Senior Member of IEEE

Licenses/Certifications

P. E. license in state of New York

Awards/Recognition

GE's corporate "Steinmetz Award" for technical achievement. GE Research Lab's "Bueche Award" for leading electronics in the circuit protection industry.


Publications:
Publications and Patents Summary

He has received 84 patents and has three more in the application stage. He was awarded 11 patents for GFCI circuits, a joint patent on the Triac, and the circuit for the triac lamp dimmer. He has published numerous technical papers and was co-author of GE's SCR Manual


Consulting Services:
Selected Consulting Examples:
  • Designed electronic control and indications for a humidity control system for musical instruments.
  • Designed and fabricated a two-hand safety control for a small punch press.
  • Developed a calibration testing system for humidistats.
Recent Client Requests:
  • Underwriters Laboratory expert for consulting on UL certification for a prototype.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
He served as expert and friend of the court in explaining to the jury the concepts of equipment ground fault protection in a case of personal injury wherein the plaintiff suffered extensive flash burns from short-circuit arcing in a 600 volt, three phase circuit breaker cabinet. He was also an expert witness involving a GFCI improperly used in a marina, resulting in a fatality.
Recent Litigation Client Requests:
  • GFCI expert needed for consulting regarding a patent issue involving a ieee award gfci.
  • GFCI expert for consulting on patent infringement litigation issues.
  • Air circuit breaker expert witness for consulting on What are your fees?.
  • Expert familiar with circuit breaker device & product design.
  • Expert in switchgear design case.
  • Expert in UL standards and/or CE requirements for litigation case.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

Additional Skills and Services:
Training/Seminars

He created and taught a short overview of Creative Engineering to engineers in his department. He created, scripted, and presented many technical seminars and lectures on the application of power semiconductors all across the US and in Europe. As Adjunct Professor of Electronics at the University of Hartford (CT), he taught junior year Fundamentals of Electronics, and created a senior year elective course on Electronic Devices and Applications.


 

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