Elmer W Madsen

Title: Elmer W Madsen: Innovator in Motor Control and Safety Circuits

Introduction

Elmer W Madsen is a notable inventor based in Bristol, CT (US), recognized for his contributions to the field of electrical engineering. He holds a total of 7 patents, showcasing his innovative spirit and technical expertise. His work primarily focuses on drive and control circuits for brushless DC motors and safety mechanisms for small appliances.

Latest Patents

One of Madsen's latest patents is a drive and control circuit for a brushless DC motor. This invention provides a solution for controlling a single-phase brushless DC motor using an integrated circuit with a maximum rated voltage lower than the overall circuit's maximum net voltage. The internal transistors within the integrated circuit drive the emitters of external power transistors connected to the motor's windings. This design allows for the use of a cost-effective integrated circuit to manage a DC motor operating at a significantly higher voltage.

Another significant patent is a shock protective circuit with an electrical latch designed for small appliances. This immersion detection current interrupter circuit features a sensor wire that detects current leakage when in contact with conductive fluids. When leakage is detected, a relay or solenoid latches, breaking the load lines beyond the relay. The relay remains latched until the power cord is unplugged or reset, ensuring safety by limiting the maximum leakage current through a diode.

Career Highlights

Throughout his career, Elmer W Madsen has worked with prominent companies, including North American Philips Corporation and Nidec Corporation. His experience in these organizations has contributed to his development as an inventor and has allowed him to refine his skills in electrical engineering.

Collaborations

Madsen has collaborated with notable individuals in the field, including Ping-Shih Wang and Charles W Hansen. These partnerships have likely enriched his work and led to innovative solutions in his projects.

Conclusion

Elmer W Madsen's contributions to electrical engineering, particularly in motor control and safety circuits, highlight his innovative capabilities. His patents reflect a commitment to enhancing technology and ensuring safety in electrical appliances. His work continues to influence the industry and inspire future innovations.