COMTRONIX DESIGN

Electronic Design Specialists

Office 352-751-2941

Cell 352-250-1139

Resume of Technical Activities, 1994-2013

Micro-Processor Applications

• Use of the Microchip PIC family of micro-controllers for application in new product development. Currently developing circuit and programming for a telephone appliance using this technology.

Analog Voltmeter Frontend

• An analog circuit design which provides the interface circuit between floating high voltage sources and microprocessor data acquisition circuit.

Component Tester, Visual Basic 6 Driven

• Operator Interface Design and Control Software Development using Visual Basic 6 language for parametric testing and data acquisition in production test equipment.

Non-Contact AC/DC Current  Sensor Front-End

• An analog circuit design which provides inductive connection to AC or DC current carrying circuits. Current ranges for this front-end cover microamperes to many amperes.

RFID -Radio Frequency Tag Identification

• Product Search and Evaluation
• Range Calculation vs. Power/Frequency/Clutter (s/n ratio)
• Antenna Analysis and Evaluation
• System Integration to On-Line Status networked using RS-485

Bar Code Scanners

• Performance Evaluation / Test Design
• Integration Into RF Modem Data Gathering System

Feed Motion Control Design

• Analog Servo and Circuit Design for Computer Control, DC motor driven conveyor bed using a Flux Vector Drive System
• PC controlled using Visual Basic 3 for operator interface

Test System Development, Motion Test System Development

• Digital Interface (CMOS/LSTTL and Discrete Components) to Mainframe Computer for Motion Controls
• Safety Monitoring Circuit Design to Mainframe Computer

Analog Audio Design for Acoustic Feedback Trainer

• Micro-Power audio circuit design for battery operated vocal training instrument.

Precision Temperature Measuring System

• RTD Temperature Measurement electronics design to compensate for the self-heating errors of sensors.

Power Drive Amplifier

• A discrete component, highly cost effective amplifier designed for driving a wide range of inductive loads.

Acceleration Measuring System

• A Non-Contact System used to measure accelerations including analog signal processing and sensor compensation.

Positioning Measurement System

• A proposal / design effort for a non-contact position measuring system using Inductive Proximity sensing along with microprocessor based signal processing.

Current Anomaly Detector

• Frequency Lock Discriminator Circuit design used to locate circuit faults by identifying circuit current anomalies.

Isolated Current Monitor

• A Closed Loop Hall Effect AC/DC current monitor for application where galvanic isolation is required.

Patents:

3,670,228 Digital Fine-Coarse Servomechanism For A Single Element Printer Control System; Inventor

7,363,187 Method And Apparatus For Automatically Testing A Railroad Interlocking; Shared Inventor

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