USB to Serial Adapter RS-232

Thursday, May 8th, 2008
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USB to Serial Adapter RS-232 Serial Port to USB The USB to Serial adapter (converter) lets you use a serial PDA, GPS, cell, etc. with a standard USB port. This adapter is the easiest way to add a serial port to your computer. Many PDAs, digital cameras, GPS units, barcode scanners, and other equipment require [...]

USB to Serial Interface by MAX213

Thursday, May 8th, 2008
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USB to serial interface is based on the powerful FT232 chip from FTDI. It enables very easy connection of the user’s application to the PC via the USB port, without necessity of any deep knowledge about the complicated USB problems. FT232 chip is capable to transfer data at speeds up to 1M Baud in RS232 [...]

USB-Powered Lithium-Ion Battery Charger by LM3622

Sunday, April 6th, 2008
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The battery-charger circuit is designed to operate as a high power USB function. To be compliant with USB Specifications (Rev. 1.1), a high-power function must not draw more than 500 mA from the bus during normal operation. The LM3622 uses the 0.25 current-limit resistor R1 to set a 400 mA maximum charging current. This leaves [...]