New Products: February 2006
Feb 1, 2006
This issue of Power Electronics Technology features battery-charger ICs, rectifiers, thick film resistors and inductors...
New Products: January 2006
Jan 1, 2006
This issue of Power Electronics Technology features new fan speed controllers, stepdown controllers, power supply kits, automotive-qualified switches, and more...
Then and Now
Oct 1, 2005
In this fourth and final article, we turn our attention to products chosen from the November/December 1975 edition of Solid-State Power Conversion, the...
ICs Protect IGBTs and Sense Currents in Motor Drives
Apr 1, 2005
In industrial and appliance motor-drive applications,
high-voltage ICs can provide full IGBT protection
in the inverters and sensorless measurement
of motor currents at low cost....
Easy Calculation Yields Load Transient Response
Feb 1, 2005
Many electronic circuits can rapidly shift between a sleep state and full load operation, placing a heavy requirement on the power converter to stabilize its output voltage. An excessive voltage variation could cause the electronics to malfunction, reset, latch up or fail....
Sensorless Control For PMDC Motors
Feb 1, 2005
A technique for controlling motor speed without
Hall sensors or other signal-generating devices
saves wear on bearings and brushes, decreases
motor noise, and reduces no-load current....
Testing Open- and Closed-Loop Current Sensors
Aug 1, 2003
Simple construction allows an open-loop Hall effect sensor to beat its closed-loop counterparts in terms of price, weight, and size; yet it may be susceptible to temperature variation and saturation....
