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Regulator Circuits, Page 4
Regulators:  #'s      A      B - C      D - H      I - L      M - Q      R - S      T - Z

Last Updated on: Wednesday, December 20, 2017 02:13 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

DC switching regulator (Mk I) -  Rpidly chops input voltage to produce a lower output voltage. More efficient than a linear regulator. [Rowan from Melbourne, Australia]
DC switching regulator (Mk II) -  A simpler and more efficient version of the above. Uses a 78Lxx device as a voltage reference and a comparator. [Rowan from Melbourne, Australia]
Designing a Boost-Switching Regulator with the MCP1650 -  Microchip Application Note Published 1-Apr-05  (app note added 2/06)
Discrete 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 I have since sold (with the power supply)...[Designed by Andrew R. Morris]
Don't Be Fooled by Voltage Reference Long-Term Drift & Hysteresis -  DN229  Design Notes (Linear Technology) (app note added 1/06)
Dual Output Regulator uses Only One Inductor -  DN100  Design Notes (Linear Technology) (app note added 1/06)
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.
Dual Regulated Power Supply -  In this circuit, the 7815 regulatates 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. ….(electronic schematic added 08/08)
Dual Regulated Power Supply-PSU -  In this circuit, the 7815 regulatates 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.... [Circuit by Andy Collison]
Dual Regulators Power Pentium® Processor or Upgrade CPU -  DN122  Design Notes (Linear Technology) (app note added 2/06)
Dual Switching Regulator Controller Operates from High Input Voltages LTC1267 -  DN114  Design Notes (Linear Technology) (app note added 1/06)
Dual-polarity supply provides ±12V from one IC -  29-Apr-04 Issue of EDN  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 Idea by Keith Szolusha, Linear Technology Corp, Milpitas, CA]
Dual-voltage regulator meets USB-power needs -  19-Aug-04 Issue of EDN 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 Idea by Wayne Rewinkel, National Semiconductor, Phoenix, AZ]
Efficiency Characteristics of Switching Regulator Circuits -  AN46 Linear Technology Efficiency varies for different DC/DC converters.  This application note compares the efficiency characteristics of some of the more popular types. Step-up, step-down, flyback, negative-to-positive, and positive-to-negative are shown. Appended sections discuss how to select the proper aluminum electrolytic capacitor and explain power switch and output diode loss calculations.
Emergency Strobe Flasher Generates 250V -  08/05/99 EDN-Design Ideas....Figure 1 shows a complete circuit for an emergency lamp that operates from a 12V automotive battery. The xenon flash tube requires a 250V-dc anode voltage and a 4-kV trigger pulse. To generate the 250V dc, IC1,  [Design Idea by Jose Luis Arce, Tecnosuma Havana, Cuba]
Extend low-output-voltage switching regulator's input range -  4-Jan-07 Issue of EDN  Switching regulator improves efficiency and allows 36V input.... [Design Idea by Hua (Walker] Bai, Linear Technology, Milpitas, CA; Edited by Brad Thompson and Fran Granville]
Finesse Regulator Noise -  System designers often find themselves battling power supply hum, noise, transients, and various perturbations wreaking havoc with low noise amplifiers, oscillators, and other sensitive devices. Many voltage regulators have excessive levels of output noise including voltage spikes from switching circuits and high flicker noise levels from unfiltered references....(electronic circuit added 7/03)
Fixed Voltage Regulators -  Use a voltage regulator to obtain a fixed voltage supply (at <1.5 Amps) from a variable source…. [REUK - Renewable Energy UK website]
Interference Free Switch Mode Pre-Regulator - I created this circuit to fix an overheating problem with a small Chinese-made stereo set. This simple solution to a perplexing problem worked so well that I felt the need to share it. This circuit can be used for other applications as well...[Circuit designed by Andrew R. Morris]
Floating Input Extends Regulator Capabilities -  DN21  Design Notes (Linear Technology) (app note added 2/06)
Flyback with V in 36-72 V & 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)
Get buck-boost performance from a boost regulator -  11-Jul-02 Issue of EDN  The SEPIC (single-ended, primary-inductance-converter] topology is generally a good choice for voltage regulators that must produce an on output voltage that falls in the middle of the input-voltage range, such as a 5V output from a 2.7 to 6V input, The topology has some disadvantages, however. The efficiency of a SEPIC circuit fares worse than that of buck and boost regulators, and SEPIC desig.... [Design Idea by Tom Gross, Linear Technology Corp, Milpitas, CA]
Hex Inverter Makes Low Cost Switching Regulator -  05/23/96 EDN-Design Ideas....Simple and low-cost circuit converts5V to12V.... EDN is migrating links. This link is not verified.  Google the "title" EDN for new link.
High Current Voltage Regulation -  Connect voltage regulators in parallel to increase the current which can be regulated…. [REUK - Renewable Energy UK website]
High Efficiency 3Battery Chargers Use LM2576 Regulators -  National Semiconductor Application Note 05 Aug1995 (app note added 4/02
High Efficiency Linear Regulators -  AN32 Linear Technology Presents circuit techniques permitting high efficiency to be obtained with linear regulation. Particular attention is given to the problem of maintaining high efficiency with widely varying inputs, outputs and loading. Appendix sections review component characteristics and measurement methods.
High Efficiency Step-Down Switching Regulator -  DN73  Design Notes (Linear Technology) (app note added 1/06)
High Stability Regulators -  National Semiconductor Application Note  (app note added 2/06)
High Voltage Buck Regualtors provide High Current Low Profile Power Solutions for FireWire Peripherals -  DN287  Design Notes (Linear Technology) (app note added 1/06)
High-speed clamp functions as pulse forming circuit -  10-Jan-08 Issue of EDN  You can use a clamping circuit instead of a Schmitt trigger to clean up high-frequency input pulses.... [Design Idea by Marián Štofka, Slovak University of Technology, Bratislava, Slovakia]
Hot Swap Push-Pull Sync. Buck Negative Flyback Dual Sync. Buck Reference Design -  Hot Swap, Push Pull, Sync. Buck, Negative Flyback, Dual Sync. Buck with Vin of -36 V to -72V. Vout of 8 V, 5 V, 3.3 V, 2.5 V and -5 V. The output power is 79.5 W.  (added 3/05)
HT0640 for Electronic Line Switch -  Supertex Semiconductors  (app note added 2/06)
Regulators:  #'s      A      B - C      D - H      I - L      M - Q      R - S      T - Z

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