The BP5034A12 is an AC / DC converter which can be used to supply +12V, 100mA DC output from a commercial power supply (100V AC). Using this unit enables simple, easy drive of microcomputers, LEDs, and other electronic components without using a transformer. It also allows set PCBs to be kept compact and lightweight, with extremely few attachments.   

FEATUREs
1) Elimination of a transformer enables compact, lightweight power supply boards.
2) Wide input voltage range. (80 to 120V for AC voltage
   conversion)
3) DC circuits can be easily configured, with few attachments.
4) Since no transformer is used, the power supply board
is less vulnerable to splitting or cracking from impact
   or shock.
5) Hybridization of the IC reduces the number of labor
   hours in the assembly process.

APPLICATIONs
   Power supply circuits for vacuum cleaners, washing machines, refrigerators,
   electric carpets, electric rice cookers and hot water pots, irons,
   cordless telephones, air purifiers, humidifiers, dehumidifiers,
   illumination devices and other small household appliances, as well as
   power supply circuits for gas, fire and smoke alarms, DC motors,
   sensors, and other similar devices