Michael Koran Email & Phone Number

Greater Boston Area

Mansfield, Ma

Hardware development of Industrial Control System* Developed a line powered isolated switching supply module with power factor correction and a variety of analog I/O circuits.*Performed surge, EFT, conducted RF immunity and RF emissions tests according to IEC standards and determined how to modify the circuit design and layout to meet these requirements.*Solved RF radiated and conducted emissions problems involving fast transitioning power circuits.*Designed chokes, inductors and transformers, choosing cores and specifying windings to provide proper inductance and bandwidth without saturation and significant loss.*Finite element analysis of electric and magnetic fields and currents.4-20mA Loop powered pressure transmitter.* Designed circuit to obtain precision, low-drift, low-noise analog and mixed signal operation in an industrial environment.

Foxboro, Ma

Hardware development4-20mA loop powered analytical instrument (pH and Conductivity)*Substantially redesigned instrument to meet new requirements and to replace many “end of life” and discontinued components.*Created a Hardware Design Specification document to outline the circuit development plans and specifications.*Selected the microcontroller based on peripheral, memory, power and other feature requirements.*Interfaced the main ARM based microcontroller to parallel SRAM, SPI bus memories, keypad, LCD and analog circuits.*Created schematic drawings using Mentor Graphics Viewdraw.*Required to meet Division 1 hazardous area intrinsic safety requirements.*Designed analog and digital circuits for very low power and high precision.*Designed buck, fly back and forward switch mode power supplies.

Hardware (Electronic Circuit) Development3-phase industrial motor and pump monitoring system*Active filter design.*DFMEA (Design Failure Mode Effects Analysis).*Met UL approvals for a Division 2 hazardous area product.*PCB layout review.

Electronic Hardware DevelopmentAircraft and engine monitors*Redesigned an aircraft engine monitor circuit board to meet the requirements for several more discrete inputs, an additional lamp driver circuit and to replace a discontinued CPLD.*Interfaced to thermocouples, rotational speed sensors, analog pressure transducers, switches, and lamp and solenoid drivers.*Solved an RF susceptibility issue through a shielding improvement, verified the fix in a test lab and demonstrated the fix at the customer site.*Required to meet FAA requirements (RTCA DO-160).

Foxboro, Ma

Pressure Products Group- Hardware Design and support

Msee, Electronic Devices And Circuits

Bsee, Electrical Engineering