Bio-rad Laboratories, Inc.

Neven Nikolic

Nenad M Kircanski

Amir Sadri

Manja Kircanski

Thanh-Vi Tran

Milija Timotijevic

Gabriel Culinco

Zhiliang Xu

A thermal management system that include an electronic circuit boards having at least two circuit boards with a space in between and further includes one or more air tubes or conduits. The electronic circuit board and air tubes are configured for drawing air into the space to facilitate cooling of the electronic circuit board concurrent with cooling of a heat sink of a heat pump connected with the electronic circuit board. The system can further include a partition to isolate airflow from the heat sink from airflow through the electronics circuit board, and can further include one or more interface components for maintaining isolation and control of air flow, improving air intake and/or supporting auxiliary components.

Thermal management for thermal cyclers using air tubes

A system for controlling an ultrasonic transducer utilizes an indication of the relative phase of the voltage on the transducer and the current passing through the transducer to control the relative phase to a value that has been preselected to correspond to resonance of an electromechanical system that includes the ultrasonic transducer. In one example application, the system includes a waveform generator that produces an oscillating signal, and the frequency of the oscillating signal is adjustable under control of the control processor. The control processor adjusts the frequency of the oscillating signal according to a proportional control law at least some of the time, and according to a proportional-integral control law at least some of the time. The control processor may also control the amplitude of the oscillation of the ultrasonic transducer.

System and method for ultrasonic transducer control

Methods and apparatus for precise positioning of an object using linear actuators based on linear stepper motors operating in microstepping or full step mode, a control algorithm based on compensation table, and a calibration apparatus for obtaining the compensation table.

Method and apparatus for precise positioning of an object with linear stepper motors

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Mississauga, Canada

Neven Nikolic