Implementing a 3-Phase Brushless Direct Current Motor Drive News & Analysis 12/2/2004 Post a comment Brushless dc motors have a straight-line, speed-torque curve similar to that of their mechanically commutated counterparts. BLDC motor internals consist of a multi-pole permanent magnet rotor and a stator with multiple coils linked together using a triangle or star connection. Cypress engineers offer the sequencing codes for driving brushless motors with Hall Effect sensors and an analog controller.
Designing external cabling for low EMI radiation News & Analysis 12/2/2004 Post a comment The advent of equalizer circuits that compensate for cable loss allows systems to send high-speed data over very long copper cables. The use of integrated circuits for equalization of cable loss has enabled a major reduction in the cost of interconnects for communications systems. For optimum performance, such systems must minimize any radiated emissions from the cables and connectors. A Maxim engineer offers this assessment of EMI reduction techniques, including coax, twisted pair cabling and e
Digitally set DC/DCs boost portables Product News 12/1/2004 Post a comment San Jose, Calif. - Summit Microelectronics bills its SMB120 nine-channel DC/DC converter/controller as the first power-with-power-management IC for portable applications that's digitally programmable.