Bias Power Releases Small AC-DC to Eliminate EMI Sans Input Filter

Bias Power Technology Inc. has released its BPS-2 series of universal single- and dual-output 2W ac-dc supplies that feature a patented circuit design that effectively eliminates line EMI without need for an input filter, all in a package measuring under 1"3.

Suited for a variety of low-power consumer and standby mode "drop-in" applications requiring no additional external components, the supply, which is available in 8 or 14Vdc single-output versions, and a 5 and 8 dual-output version, has a line/load regulation of ±1%, ripple of 250mV at 100Hz and nominal efficiency of 73%. Input-to-output isolation is 3kVac. MTBF is greater than 200,000hrs at ±25°C. No-load power consumption of less than 30mW. The module is protected against short-circuits.

The BPS-2 series meets EN55022, FCC Part 15, and UL/CSA specifications. The BPS-2, measuring 1.09 x 1.35 x 0.57 inches and rated for operation over 0 to 70°C, is priced under $6 in small OEM quantities.