Aladin interface using op-amp:  (schematic / circuit added 2/07)

Aladin interface:  (electronic circuit added 2/07)

AN-42008 / Applications Considerations and Circuits for the ML4861:  Fairchild Application Notes / (app note added 6/06)

AN-42011 / Choosing an Inductor for Your ML4861 Application:  Fairchild Application Notes / (app note added 6/06)

AN-42031 / Multiple Output Design Considerations for the ML4863:  Fairchild Application Notes / (app note added 6/06)

AN-42033 / Boost Regulators for Battery Powered Applications:  Fairchild Application Notes / (app note added 6/06)

AN-42036 / PCB Grounding System and FAN2001/FAN2011 High Performance DC-DC Converters:  Fairchild Application Notes / (app note added 6/06)

AN888: Programming the Palm OS™ for Embedded IR Applications:  Microchip Application Note Published 8-Jan-04   (app note added 2/06)

Apple iPod dock pinout:  (diagram added 2/07)

Application Hint 30:  Micrel Application Note MIC2527 Voltage Drop, Packaging, and PCB Layout (app note added 6/06)

Application Note 17:  Micrel Application Note Universal Serial Bus Power Management (app note added 6/06)

Application Note 32:  Micrel Application Note Dual Current-Limiting Switch for USB Applications (app note added 6/06)

Applications Considerations and Circuits for the ML4861 / AN-42008:  Fairchild Application Notes / (app note added 6/06)

Boost Regulators for Battery Powered Applications / AN-42033:  Fairchild Application Notes / (app note added 6/06)

Casio calculator interface schematic:  (electronic circuit added 2/07)

Casio datalogger (CapeCanaveral):  (diagram added 2/07)

Choosing an Inductor for Your ML4861 Application / AN-42011:  Fairchild Application Notes / (app note added 6/06)

Connecting the MCP2150 to the Palm™ Operating System:  Microchip Application Note Published 30-May-01   (app note added 2/06)

Fitting a JTAG interface to an iPAQ 3600:  (diagram added 2/07)

Interfacing ADXL202 Accelerometer to Palmpilot:  (circuit / schematic design added 6/06)

Luxeon for Camera Phone Flash PDA and DSC Applications:  This reference design outlines the key considerations in the construction of a solid state, high performance flash solution utilizing Luxeon LED technology. This design integrates Lumileds’ high power Luxeon Emitters product with a cost effective lens solution to provide the necessary light output and illumination pattern suited to digital still camera (DSC) and mobile phone camera flash applications. applications.  (added 6/06)

MIDI interface for Palm computers:  This app, written by me,  allows midi messages to be monitored on your Palm Pilot. You can select the messages you wish to recieve and filter on the midi channels. Display in hex or decimal. It is shareware, and there is a small fee for non-evaluation use  (electronic circuit added 5/07)

Mobile Solutions (MP3 Cell phone PDA PMP):  Pericom Semiconductor Application Brief # 046 (app note added 2/06)

Multiple Output Design Considerations for the ML4863 / AN-42031:  Fairchild Application Notes / (app note added 6/06)

Palm Keyboard interface board:  (electronic circuit added 2/07)

Palm Pilot, Palm III, V, VII, VIIx, Handera interface port pinout:  (schematic / circuit added 2/07)

PalmPilot cradle to modem adapter:  (electronic circuit added 4/05)

PalmPilot turbo Boost guage interface:  (electronic circuit added 4/05)

PCB Grounding System and FAN2001/FAN2011 High Performance DC-DC Converters / AN-42036:  Fairchild Application Notes / (app note added 6/06)

Portable Digital Assistant (PDA):  Intersil Application Block Diagram  (app note added 6/06)

Power Conditioning for Notebook and Palmtop Systems:  AN51 Linear Technology Notebook and palmtop systems need a number of voltages developed from a battery. Competitive solutions require small size, high efficiency and light weight. This publication includes circuits for high efficiency 5V and 3.3V switching and linear regulators, back light display drivers and battery chargers. All the circuits are specifically tailored for the requirements outlined above.

Programming the Palm OS™ for Embedded IR Applications:  Microchip Application Note Published 8-Jan-04   (app note added 2/06)

Sharp Palm-Top/Hand-Held to RS-232 Serial Converter:  (circuit / schematic design added 6/06)

TB049: Connecting the MCP2150 to the Palm™ Operating System:  Microchip Application Note Published 30-May-01   (app note added 2/06)

Three Input Supply Powers 3.3 Volt Portables:  The single-ended primary-inductance converter (SEPIC) of Figure 1 accepts input voltages ranging from 3V to over 6V, and produces a regulated 3.3V, 200mA output. It accepts an input voltage from three sources: a 5V dc wall cube, a 3-cell AA battery, and a lithium backup battery. Maxim Application Note 136  (app note added 6/06)

Three input supply powers 3.3V portables:  04/13/95 EDN-Design Ideas / (added 6/06) The single-ended primary-inductance converter in Fig 1 accepts input voltages ranging from 3 to more than 6V and produces a regulated 3.3V, 200-mA output. The converter accepts an input voltage from three sources: a 5V dc wall cube, a three-cell AA battery, and a lithium backup battery. Unlike conventional boost regulators whose battery current continues to flow during shutdown (unless you add a cutoff switch), this circuit's output turns off fully in response to a shutdown command. And, unlike flyback-transformer regulators and combination step-up/linear regulators, Fig 1 requires no transformers. Coils L1 and L2 should be the same type and have the same value, but coupling between them isn't required. You can wind the inductors on the same core for convenience, but the circuit works equally well if they are completely separate....

Wireless local network for PalmPilot (large PDF):  (electronic circuit added 4/05)