Public engineering firm profile
Mason, OH
Engineering confidence into every solution.
Millspaw Electronics specializes in custom embedded systems, electronics consulting, and instrumentation and control engineering. The practice provides specialized services including legacy component-level repair, refurbishment, reverse engineering, and commercial grade dedication for highly regulated sectors such as nuclear, defense, and power generation.
Maximizes system longevity by restoring aging or degraded electronic components to full functionality, extending the service life of legacy systems.
Procures hard-to-find or obsolete components and performs full dedication in accordance with nuclear and Department of Energy requirements, complying with NQA-1 and 10CFR50 Appendix B standards.
Accurately replicates and reproduces legacy electronic components that are no longer available, ensuring form, fit, and function are preserved.
Specializes in designing, supporting, and analyzing analog and digital systems critical to process control, safety, and monitoring.
Nuclear Power Plant | Nuclear
Retuned three legacy GE 9T66Y988 power supply modules from 50 Hz to 60 Hz operations, refreshed capacitors, repaired a damaged coil, and completed a 100-hour nuclear-grade burn-in.
View project sourceIndustrial
Restored an ASCO automatic transfer switch damaged by an electrical fire. Replaced the back-plane, main switch assembly, control PCB, solenoid, and wiring harnesses, refreshed capacitors, and performed a 100-hour loaded burn-in.
View project sourceIndustrial
Refurbished a legacy ABB KD-11 distance relay with mechanical damage by sourcing like-for-like surplus parts, replacing the shattered cover and rear terminal-block guard, and performing final functional testing.
View project sourceSteam Electric Station | Nuclear
Restored full functionality to a thermally damaged Rochester isolator card using reverse engineering, Commercial Grade Dedication, and custom board manufacturing without original OEM documentation.
View project sourceNuclear
Reverse engineered and redesigned obsolete circuit boards for critical plant systems to reduce downtime and pass regulatory validation and verification.
View project sourceDepartment of Energy Laboratory | Defense
Built ruggedized signal conditioning boards for a Department of Energy laboratory to ensure spec-compliant, high-fidelity output.
View project sourceFounder & Principal Engineer
Sam Millspaw founded Millspaw Electronics in 2019 to provide reliable solutions for obsolete and custom electronics, particularly in the nuclear industry. He began his career as a Procurement Engineer at Bechtel, supporting the Naval Nuclear Propulsion Program, and later served as Lead Repair Engineer at ATC, where he specialized in component repair and reverse engineering for safety-critical systems.
Senior Engineer
Stephen Hayes joined Millspaw Electronics in 2022 and leads product design and reverse engineering initiatives while providing technical oversight. He previously worked at Paragon Energy Solutions supporting nuclear I&C systems and has several years of experience in product development and control systems in the industrial sector.
Vice President
Leigh Skorupskas joined Millspaw Electronics in 2023, playing a key role in building and implementing the quality assurance program-laying a strong foundation for continued success in the nuclear sector. Her role has since expanded to encompass business development, operations, and long-term growth strategy.
I have worked with Millspaw Electronics and they are great!