Data line filtering:  Coilcraft - Power Magnetics Application Note - (app note added 6/06)

DC Adapter Power Supply:  (Electronic circuit added 4/05)

DC Power Supplies for Base Station Testing, Product Note:  Agilent Application Note   (added 6/06)

DC Power Supply:  simple circuit based on 78xx fixed voltage regulator IC, those ICs are available for some fixed voltages between5 and24V (added 6/06)

DC Power Wire also Carries Clock or Data:  03/13/98 EDN-Design Ideas / (added 6/06)   -- High-side current-sense amplifier, IC1, offers a simple method of combining low-speed clocks or other signals with dc power in cables between subsystems

DC to DC Converter Allows of Single Battery:  Have you ever wanted to circuit to run off a single 9 Volt battery only to find you needed levels like +12 and -12 Volts? The thought of multiple batteries might have put you off. Why not use a simple DC to DC converter? (added 4/02)

DC/DC Conversion Without Inductors:  Maxim App Note #725 (app note added 7/03)

DC/DC Converter Controller using a PICmicro Microcontroller:  Microchip Application Note - Published 3-Aug-00   (app note added 2/06)

DC/DC Converter Drives LumiLEDs White LEDs from a Variety of Power Sources:  DN340 -  Design Notes (Linear Technology) (app note added 2/06)

DC/DC Converter Increases Available Power in Dual Voltage System:  01/08/04 EDN Design Ideas  /  (added 1/05)  The schematic in Figure 1 shows a way to increase the power available from a current-limited 5V supply by adding power from a -5V supply. The dc/dc converter generates a single 12V, 150-mA (1.8W) output from two regulated and current-limited input sources at 5V, 300 mA (1.5W) and -5V, 300 mA (1.5W)....

DC/DC converter operates from phone line :  1/15/98 EDN Design Ideas /  (added 11/05)

DC-DC Converters for Portable Computers:  DN52 -  Design Notes (Linear Technology) (app note added 2/06)

DC-to-DC Converter:  will produce a 85-Volt voltage from +3V, usable for low power applications (added 4/02)

DDR-SDRAM Termination Simplified using a Linear Regulator:  National Semiconductor - Application Note   (app note added 2/06)

Defining Diode Data Sheet Parameters:  This application note will take the reader on a tour of parameters used by Advanced Power Technology in their diode data sheets. In most cases the intent will be to define and explain. In a few cases more discussion will be provided to clarify the usage of data sheet information. The note will be divided into sections corresponding to the sections of the data sheets. Application Note Microsemi APT0301 (app note added 4/08)

Design Considerations for Switched Mode Power Supplies Using a Fairchild Power Switch (FPS) in a Flyback Converter / AN-4105:  Fairchild Application Notes / (app note added 6/06)

Design Guidelines for Off-line Flyback Converters using FPS / AN-4137:  Fairchild Application Notes / (app note added 6/06)

Design Guidelines for Quasi-Resonant Converters Using FSCQ-series Fairchild Power Switch (FPStm) / AN-4146:  Fairchild Application Notes / (app note added 6/06)

Design Guidelines for Quasi-Resonant Converters Using KA5Q-series Fairchild Power Switch (FPStm) / AN-4149:  Fairchild Application Notes / (app note added 6/06)

Design Guidelines for RCD Snubber of Flyback / AN-4147:  Fairchild Application Notes / (app note added 6/06)

Designing A Superheterodyne Receiver Using an IF Sampling Diversity Chipset:  AN-502 - Analog Devices Application Notes  (app note added 6/06)The AD6600/AD6620 Chipset Simplifies Receiver Design

Desktop Power Supply from a PC:  This ATX PS board has leads for +5 (RED), -5 (WHITE), +12 (YELLOW), -12 (BLUE) volts, Ground (BLACK) and switch (GREEN). Dell power supplies manufactured between 1996 and 2000 do not follow the industry standard pinout and color codes. The fan has also been unplugged for better viewing. Since this PS was converted for use in the logic and robotics labs, the selected voltages were tapped. Other users may want combinations of +3.3 V (ORANGE), +5 V and/or +12 V if they are converting one of the newer supplies. For R/C applications, the 5 volt output can also serve as a desktop source to drive receivers and servos. If used as a power source for the micro and sub-micro servos, you must be careful not to drive the servo to either endpoint to avoid stripping the smaller gears in these units. Most standard servos have sufficiently robust gear trains and will simply... (added 2/06)

Determining inductor power losses #2:  Coilcraft - Power Magnetics Application Note - (app note added 6/06)

Determining inductor power losses:  Coilcraft - Power Magnetics Application Note - (app note added 6/06)

Diodes improve inverter efficiency:  04/29/99 EDN-Design Ideas / (added 11/05) In "Switched-capacitor regulator provides gain" (EDN, March 13, 1998, pg 80) a switched-capacitor voltage inverter wired as a supply splitter steps a positive voltage down to an output voltage equal to half the supply voltage. The input current to such a circuit is one-half the output current; thus, you obtain higher efficiency and lower power loss than you would from a linear regulator performing the same function. You can obtain the same benefits while inverting the input voltage. Figure 1 shows the principles of operation. Typical switched-capacitor inverters contain four internal switches. Two switches charge a flying capacitor from the input voltage to ground; the other two switches discharge the capacitor, pulling the positive side to ground and generating a negative output voltage....

DN0002 - MP1580 - Startup and Over-shoot Design Solutions:  Monolithic Power Systems, Inc - Design Note - (added 6/06)

DN0004 - MP1570 - 3A Point-of-Load Power Supplies :  Monolithic Power Systems, Inc - Design Note - (added 6/06)

Drive High Voltage Varactor Diodes from just 5V:  03/27/97 EDN-Design Ideas / (added 3/03)  

Dual DC/DC Converter with Integrated Schottkys Generates ±40V Outputs and Consumes Only 40µA Quiescent Current:  DN359 -  Design Notes (Linear Technology)  (app note added 1/06)

Dual Output DC/DC Converter Solutions for Xilinx FPGA Based Systems:  Design Solutions 41 -  Design Notes (Linear Technology)  (app note added 1/06)

Dual output nonisolated SMPS Powers appliances:  12/07/04 EDN Design Ideas  / (added 1/05)  Modern appliances offer a range of features that rely heavily on microcontrollers and auxiliary circuits. Although conventional iron-core transformers can provide ac line-isolated, low-voltage power for a microprocessor, coupling the processor's control signals to line-side power switches requires yet another layer of electrical isolation, such as optocouplers or pulse transformers.

Easy Xenon DC-to-DC Converters!:  (added 8/02)

Efficient DC/DC Converter Provides Two 15A Outputs from a 3.3V Backplane:  DN278 -  Design Notes (Linear Technology) (app note added 1/06)

EP68 3.3 V 2 a DC-DC Power Supply:  This design kit is a 3.3 V / 2 A (6.6 W) DC-DC converter that is based on a DPA423G device. This design is intended as an evaluation platform for DPA-Switch devices in the low cost surface-mount DIP package. (added 3/05)

EP-71 3.3 V 2 a DC-DC Power Supply:  This design kit is an isolated 3.3 V, 2 A (6.6 W) DC-DC converter utilizing a DPA423G. This design is intended as an evaluation platform for DPA-Switch devices in the 8-pin DIP, low cost surface-mount package. (added 3/05)

EPR-54 LinkSwitch 2.75 W Low Cost Charger/Adapter:  This design kit is a 5.5 V, 500 mA charger/adapter power supply. The power supply utilizes the LinkSwitch LNK520 device, optimized for bias winding feedback. The LinkSwitch integrates a 700 V MOSFET, PWM controller, start-up, thermal shut-down, and fault protection circuitry. (added 3/05)

Filters and Power Dissipation - Using the Power Design Tool - App Note 39:  Apex Microtechnology Corp - App Note - (added 6/06)

Flyback Circuit Provides Isolated Power Conversion:  01/07/99 EDN-Design Ideas / (added 03/03) [Note:  File contains multiple circuits - scroll to find this circuit]  A common requirement in telecommunications systems is to convert an unregulated 48V line to an isolated, accurate dc supply voltage. The circuit in Figure 1 provides a 5V, 15W output. The circuit uses a UCC3809 primary-side controller, which can also control other single-ended converters. The topology uses peak-current-mode control with a fixed-frequency oscillator. The design is cost-efficient, because it assumes that compensation of the voltage loop occurs on the secondary side, where you would place the error amplifier and reference anyway. By eliminating a primary-side amplifier, you reduce system cost and complexity....

Flyback Controller Improves Cross Regulation for Multiple Output Applications:  DN344 -  Design Notes (Linear Technology) (app note added 1/06)

Flyback with V in 36-72 V and V out +/-135 V:  Flyback with Vin 36-72 V and Vout +/- 135 V. The output current is 0.15 A with 20.25 W of output power. (added 3/05)

Function Generator #2:  (Circuit / schematic design added 6/06)