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Directly Parallel This High Power Density Linear Regulator-LT3080 - The LT3080 is a new architecture for linear regulators. it provides better regulation, a simple output adjustment with a single resistor where the output can be adjusted down to zero. Also, this architecture allows easy paralleling of regulators for no heatsink operation in an all surface mount applications. The LT3080__ Linear Technology/Analog Devices App Note, Robert Dobkin-Vice President-Engineering and Chief Technical Officer Sep 15th 2008
Discreet LDO Voltage Regulator - Do you need a simple LDO voltage regulator, but an IC version that meets your needs is not available? Make your own using this circuit. The circuit in the drawing is the actual circuit that I built and used successfully to power a shortwave radio which __ Designed by Andrew R. Morris
Discrete Component Voltage Regulator - While integrated circuits have become a staple of all modern circuit designs, it is still possible to build circuits without IC ’s and still achieve a high level of performance. The circuit in Figure 1 is a high performance 5 volt voltage regulator built using discrete components that are readily available. I have used no IC ’s and I have even substituted a 1N4001 in lieu of a zener diode. The regulator output voltage varies by a mere .4% and has current limiting at 1.5 amps along with short circuit protection. With the exception of thermal shutdown, this circuit closely matches the performance of the 7805 5 volt regulator IC . __ Designed by N1HFX
Discrete Low-drop Regulator - NOTE: Must register on this site __ Designed by Published in Elecktor July/Aug, 2010
Don't Be Fooled by Voltage Reference Long-Term Drift & Hysteresis - DN229 Design Notes__ Linear Technology/Analog Devices
Doozy requiring some parts you can't get at the 'Shack - You can make a doozy of a xenon strobe using the 12 volt DC in, __ Designed by Don Klipstein
Doozy requiring some parts you can't get at the 'Shack. - You can make a doozy of a xenon strobe using the 12 volt DC in, DC output mercury lamp ballast here at http://www. donklipstein. com/ebdc12. html. You may run into a problem with the flashtube arcing continuously after a flash. if you use an open-collector comparator such as a 339 in the overvoltage sensing section of this circuit, you can wired-AND the comparator output with some sort of scheme to disable the circuit for a few to a few tens of milliseconds after a flash (by "pulling down" Pin 5 of the 555). __ Designed by Don Klipstein
Drill Speed Regulator - A mini-drill machine is always needed in drilling the printed circuit board. it is usually powered by batteries that limit the drill’s capacity. Using a power supply adaptor with a speed regulator like the one featured here can certainly improve the performance of the drill. The speed regulator can maintain the speed of the drill no__
Dual +/-25V LAB Supply - Up to 800mA (typical) output current at +/-25V. __ Designed by Rod Elliott ESP
Dual 12V & 3.3V Hot Swap Application for Two Advanced Mezzanine Cards - The LTC4242 Hot Swap controller allows safe board insertion and removal for two independent slots on a Pica Express backplane. External N-channel transistors control the 12V and 3.3 V supplies while integrated switches control the 3.3 V auxiliary supplies. Both 12V and 3.3 V supplies can be ramped up at an adjustable rate. Dual __ Linear Technology/Analog Devices App Note, Mar 26th 2010
Dual 12V Power Supply - Schematic only __ Designed by Tony van Roon VA3AVR
Dual 13A μModule regulator with digital interface for remote Monitoring & control of power - EDN Design Ideas: 04/06/2015 Digital power system management (PSM) enables on-demand telemetry capability to set, monitor, change, and log power parameters of dual high-current Design by LTC Design Note
Dual Buffered ±0.617V Reference Powered by Two AA Batteries - Lower OpAmp is a precision inverter setting outputs to set the outputs at the same magnitude but opposite polarity. The upper OpAmp drives the positive output so that the difference of the two outputs is the reference voltage, so the result is that half the reference voltage is the magnitude of the outputs__ Linear Technology/Analog Devices App Note, Jun 21st 2011
Dual DC/DC Controller for DDR Power with Differential VDDQ Sensing & ±50mA VTT Reference - 11/01/13 EDN-Design Notes Solid-state circuit breaker for microcontrollers. The LTC3876 is a complete DDR power solution, compatible with DDR1, DDR2, DDR3, and DDR4 lower voltage standards. The IC includes VDDQ and VTT DC/ DC controllers and a precision linear VTT reference. A differential output sense amplifier and precision internal reference combine to offer an accurate VDDQ supply. The VTT controller tracks the precision VTTR linear reference with less than 20mV total error. The precision VTTR reference maintains 1.2% regulation accuracy, tracking one-half VDDQ over temperature for a ±50mA reference load. Design by Ding Li
Dual Output Regulator uses Only One Inductor - DN100 Design Notes__ Linear Technology/Analog Devices
Dual Polarity Amplifier has Digital Control - 09/12/96 EDN Design Ideas: The circuit in Figure 1 can amplify a signal either in an inverting or a noninverting mode. When switch S1 is on and S2 is off, the circuit behaves as a regular inverting amplifier. When S2 is on and S1 is off, the circuit feeds the signal to the noninverting input of the op amp; thus, the circuit behaves as a noninverting amplifier. if S1 and S2 are monolithic analog switches, you Design by Rick Downs, Dallas Semiconductor Corp, Dallas, TX
Dual Polarity Output Converter Fits into Tight Spaces - DN318 Design Notes__ Linear Technology/Analog Devices
Dual Polarity Power Supply - This dual polarity power supply is easy to build, requires few parts, and is adjustable from 0-15 volts. it is great for powering op amp circuits, as well as other circuits that require a dual supply voltage.
__ Designed by Aaron Cake
Dual power supply Delivers 8A with no heat sinks - 03/30/00 EDN Design Ideas: The circuit in Figure 1 is a high-current dual supply that provide as 5 and 3.3V at currents as high as 8A. The circuit uses a fixed-frequency, two-output, current-mode synchronous-buck- controller. PFD contains several circuits, scroll to find this one Design by John Seago, Linear Technology Corp, Milpitas, CA
Dual PSU - I reckon that every electronics hobbyist should build at least one general-purpose bench PSU. Apart from being an invaluable piece of kit, the project will cover a reasonably wide range of topics, making it a very worthwhile learning exercise. __ Designed by Mark Hennessy
Dual Regulated Power Supply - in this circuit, the 7815 regulates the positive supply, and the 7915 regulates the negative supply. The transformer should have a primary rating of 240/220 volts for Europe, or 120 volts for North America. __
Dual Regulated Power Supply-PSU - in this circuit, the 7815 regulates the positive supply, and the 7915 regulates the negative supply. The transformer should have a primary rating of 240/220 volts for Europe, or 120 volts for North America. The centre tapped secondary coil should be rated about 18 volts at 1 amp or higher, allowing for losses in the regulator. An application for this type of circuit would be for a small regulated bench power supply __ Designed by Andy Collison
Dual Regulator Handles Two Input Voltages - 03/15/12 EDN Design Ideas: (Originally published in the January 21, 1993, EDN-Design ideas) Use a pair of MOSFETs to switch between 3.3 and 5V regulated voltage. The circuit in Fig 1 supplies both 3.3 and 5V to transitional circuits that employ both the new 3.3 V and older 5V devices. Additionally, because the regulator accepts either 3.3 or 5V inputs, you could plug it into either a new 3.3 V system or an old 5V system. Design by David L Dinsmore, Linear Technology Corp, Dallas, TX
Dual Regulators Power Pentium® Processor or Upgrade CPU - DN122 Design Notes __ Linear Technology/Analog Devices
Dual Supercapacitor Backup Power Supply, 0.5V to 5V - The LTC3122 is a synchronous step-up DC/DC converter with true output disconnect and inrush current limiting. The 2.5A current limit along with the ability to program output voltages up to 15V makes the LTC3122 well suited for a variety of demanding applications. Once started, operation will continue with inputs down to 500mV, __ Linear Technology/Analog Devices App Note, Jun 19th 2013
Dual Switching Regulator Controller Operates from High Input Voltages LTC1267 - DN114 Design Notes__ Linear Technology/Analog Devices
Dual-output nonisolated SMPS powers appliances - 7-Dec-04 EDN Design Ideas: 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 Design by Fabio Cacciotto, STMicroelectronics, Catania, Italy
Dual-Polarity Peak Detector Operates From Single Supply - 05/12/94 EDN Design Ideas: The circuit in Fig 1 can detect the peak of either positive or negative inputs, yet it operates from a single supply. The circuit uses two unity-gain amplifiers to monitor the input signal, one an inverting amplifier and the other a noninverting amplifier. A typical application is driving a VU meter Design by Chester Simpson, National Semiconductor, Santa Clara, CA
Dual-polarity supply provides ±12V from one IC - 29-Apr-04 EDN Design Ideas: Well-regulated, dual-polarity power supplies find wide use in disk-drive, handheld-device, automotive, and notebook-computer applications. in these applications, board space and allowable component heights are continually shrinking. So, power-supply designers face the challenge of providing split rails with as few parts as possible, thus saving board space and cost Design by Keith Szolusha, Linear Technology Corp, Milpitas, CA
Dual-voltage regulator meets USB-power needs - 19-Aug-04 EDN Design Ideas: This design idea stems from the limited availability of IC voltage regulators that can meet key USB-power specs, coupled with the need for turn-on sequencing and rise-time control at each output. As always, for PC-related designs, minimum cost is a primary motivation. USB specs require all loads to limit inrush current to less than 100 mA plus 50 µC of charge when powered on Design by Wayne Rewinkel, National Semiconductor, Phoenix, AZ
Dynamo Current & Voltage Regulator - Useful for lovers of older cars, motorcycles and boats. __ Designed by Manfred Mornhinweg
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