This is a design example report of a 10 W power supply employing DPA423P designed for VoIP phone. It operates in an input range of 37 to 57 VDC with 3.3 V/2.0 A, 5 V/200 mA, 12 V/200 mA outputs. This ...

Avaya Inc. this week announced inline power capabilities for its Cajun stackable switch, allowing it to power IP phones through their network cables. The new technology, based on the 802.3af standard ...

Wall-mounted AC Adaptors, sometimes called wall-warts, have been a standard way of providing electricity to low-power devices since the 1970s, powering everything from clock radios to Wi-Fi routers to ...

Switched-mode power supplies are found in electronics all around us. They provide the DC voltages that power our computers, cell phones, chargers, appliances, and myriad other electronic devices.