Len Bekker

Title: Len Bekker: Innovator in Electrical Systems

Introduction

Len Bekker is a notable inventor based in Central Islip, NY (US). He has made significant contributions to the field of electrical systems, holding a total of 2 patents. His work focuses on enhancing the accuracy and efficiency of fan tachometer readings and voltage references.

Latest Patents

Len Bekker's latest patents include a "Method and apparatus for generating accurate fan tachometer readings." This invention presents a system and method for measuring the speed of a fan in an electrical system. The duty cycle of a pulse width modulated (PWM) signal provided by a signal generator controls the speed of the fan. The fan generates tachometer pulses that are utilized by a tachometer reading unit to monitor the RPM of the fan. Additionally, very low frequency test (VLFT) pulses are generated and provided through a sampling signal multiplexed with the PWM signal. This allows for sampling of the fan-generated tachometer pulses even when the PWM signal is low. The frequency of the sampling signal is determined based on the duty cycle of the PWM signal and is dynamically updated when the duty cycle changes. The sampling signal serves as the clock input to a flip-flop, with the tachometer pulses as the data input. The output of the flip-flop feeds into a pulse counter that counts the number of pulses within a specified time period, ultimately providing the measured RPM of the fan.

Another significant patent is the "Dynamic, digitally controlled, temperature compensated voltage reference." This invention features a voltage reference that is dynamically and digitally controlled by a digital function. The digital function can be implemented as a digital calculation or lookup table. Inputs to this function include a modifiable trim value stored in a trim register and a substrate temperature value. The preset value of the trim register is generated by cutting fuses and/or leaving fuses uncut, with the cutting process performed using laser trimming devices. The output of the digital function is a corrected reference trim value that controls the gain of a voltage reference amplifier, which is based on a band gap voltage reference. The derived voltage reference provides a stable reference voltage that is dynamically and digitally controllable for a host system requiring a voltage reference.

Career Highlights

Len Bekker is currently employed at Standard Microsystems Corporation, where he continues to innovate and develop new technologies. His work has had a significant impact on the efficiency and accuracy