usb powered

This circuit of multimedia speakers for PCs has single-chip-based design, low-voltage power supply, compatibility with USB power, easy heat-sinking, low cost, high flexibility and wide temperature tolerance. At the heart of the circuit is IC TDA2822M. This IC is, in fact, mono-lithic type in...

The USB powered battery charger circuit is designed to function as a high-power USB mode. To comply with USB specification (Rev 1.1), a position of great power should not take more than 500 mA from the bus during normal operation. The LM3622 utilizes current limiting resistor R1 0.25 to a...

he radio is a very simple media. Just a few electronic components able to transmit on the FM band. Aside of course, make these frequencies is illegal. This FM transmitter, which is powered by USB, recovers output on your computer or your MP3 player to the relay on the tape FM (frequency 108...