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Regulator Circuits
Regulators:  #'s - A       B - G       H - Q       R - S       T  - Z


Last Updated: October 24, 2017 02:55 PM
Circuits Designed by Dave Johnson, P.E. :

LM317 adjustable voltage regulator used in Battery Eliminator Circuit - If you use a 1.5v or a 3v battery powered MP3 player for long periods of time, you may get tired of constantly changing batteries.  Some older players do not work will NiMH
rechargeable batteries so changing out batteries can get expensive.  The circuit be . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2005

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HB-LED flashing beacon repurposes switching regulator -  EDN Design Ideas:  08/04/2014     A classic, low-cost “switcher” IC is repurposed to flash a high-brightness LED in this minimal-parts-count Design ideas -  __ Circuit Design by T A Babu

Heavy-duty power supply regulates either voltage, current, or power -  05/05/75  EDN Technical Article:     By combining switching and series-pass techniques, this high-voltage supply's designer achieved 0.01% regulation at power levels to 100W.   __ Circuit Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke.  He was 63.

Hex Inverter Makes Low Cost Switching Regulator -  05/23/96 EDN Design Ideas:  Simple and low-cost circuit converts5V to12V __ Circuit Design by Dimitry Goder, Switch Power Inc, San Jose, CA

High Current Voltage Regulation -  Connect voltage regulators in parallel to increase the current which can be regulated.   __ Designed by REUK-Renewable Energy UK website

High Efficiency Dual 13A or Single 26A μModule Regulator -  Linear Technology's LTM4620 uses a proprietary lead frame design to package high power regulators into a very small form factor with effective thermal conduction through the top and bottom of the µmodule product.  The device can be connected in parallel to support higher current applications with very accurate current sharing__ Linear Technology/Analog Devices App Note, Eddie Beville-Design Manager uModule Products Sep 10th 2012

High Efficiency Linear Regulators -  AN32 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.  __ Linear Technology/Analog Devices

High Efficiency Step-Down Switching Regulator -  DN73 Design Notes__ Linear Technology/Analog Devices

High Efficiency, UltraLow IQ, 42V, 2.5A Sync Buck Regulator -  The LT®8610 step-down regulator integrates key high performance features in one compact IC .  it offers synchronous rectification, for efficiencies up to 96%.  The low quiescent current of 2.5µA extends battery life and saves extra circuitry.  High speed switching minimizes board space and helps avoid EMi problems.  A low dropout __ Linear Technology/Analog Devices App Note, Leonard Shtargot Staff Engineer-Power Products Jun 14th 2012

High Voltage Buck Regualtors provide High Current Low Profile Power Solutions for FireWire Peripherals -  DN287 Design Notes__ Linear Technology/Analog Devices

High-power LED drivers require no external switches -  07/19/07 EDN Design Ideas:  Suiting a variety of applications, these circuits transform a switching regulator into a current source for driving power LEDs __ Circuit Design by Alfredo H Saab and Steve Logan, Maxim Integrated Products, Sunnyvale, CA

High-power shunt regulator uses BJT & reference IC -  EDN Design Ideas:  03/17/2014     This circuit provide as much better performance and higher power handling than a Zener diode __ Circuit Design by Chris Toliver

High-Speed Clamp Functions as Pulse-Forming -  10-Jan-08 EDN Design Ideas:  You can use a clamping circuit instead of a Schmitt trigger to clean up high-frequency input pulses __ Circuit Design by Marián Štofka, Slovak University of Technology, Bratislava, Slovakia

Increasing Regulator Current -  An outboard pass transistor used to increase the current output of a voltage regulator IC .   __ Designed by Andy Collison

Inductor Selection for Lt 1070 Switching Regulators -  DN8 Design Notes__ Linear Technology/Analog Devices

Inductorless Switching Regulator Boosts Input Voltage -  App Note #5__ Maxim Integrated

Industrial 12V 1MHz Regulator with Custom Input Undervoltage Lockout Thresholds -  The LTC3115-1 is a high voltage monolithic synchronous buck-boost DC/DC converter.  its wide 2.7V to 40V input and output voltage ranges make it well suited to a wide variety of automotive and industrial applications.  A proprietary low noise switching algorithm optimizes efficiency with input voltages that are above, below or__ Linear Technology/Analog Devices App Note, Mar 29th 2012

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.   __ Designed by Andrew R. Morris

Introducing the LT3070 Point-of-Load Regulator for FPGA & Server Backplanes -  Modern FPGAs and servers operating at low voltages are sensitive to subtle supply drops.  The droop may result from a combination of excess regulator noise, insufficient bandwidth in the supply regulator, excess ESR & ESL in the decoupling components, or distributed inductance in the power distribution.  To abate the risk__ Linear Technology/Analog Devices App Note, Kelly Consoer Jan 4th 2011

Isolated flyback regulator with LM2577 -  (5V/150mA, 7.5V/100mA, and -7.5V/70mA).__ hobbyteam @ hobby-hour.com

Last-Gasp 5V Output from 12V to 15V Supply using a Supercapacitor -  The LT3009 is a micropower low dropout voltage (LDO) linear regulators that supplies 20mA output current with a dropout voltage of 300mV.  __ Linear Technology/Analog Devices App Note, Mar 24th 2010

Latching Regulator Prevents Deep Discharge -  03/16/95 EDN Design Ideas:  To avoid a deep discharge that can shorten or destroy a rechargeable battery's life, you need to remove the load at the point of complete discharge.  Because a battery's terminal voltage recovers after load removal, you can't simply disconnect the load when the voltage dips below a threshold and reconnect it when the voltage returns above that threshold __ Circuit Design by Doug Vargha, Maxim Integrated Products, Sunnyvale, CA

LCD Bias (+5V,-7.5V, +12.5V) Plus 8 LED Power Supply -  The LTC3524 is an integrated BiAS and white LED power converter solution for small/medium-sized polysilicon thin film transistor (TFT) liquid crystal (LCD) display panels.  A 1.5MHz synchronous boost converter generates a programmable low noise, high efficiency 25mA TFT supply of up to 6.0V.  Regulated, low ripple charge pumps are used to generate up to +20V and –20V at 2mA.  A second 1.5MHz boost converter powers one or two LED strings with up to five series elements each__ Linear Technology/Analog Devices App Note, May 24, 2010

LDO Buck/Boost 2 Sync Buck Sync Boost Reference Design -  LDO, Buck/Boost, 2 Sync.  Buck, Sync.  Boost with Vin 2.7-4.2 V LiiON or 4.5-6.5 V adapter.  Multiple output voltages of 1.5 V, 2.5 V, 3.3  V and 8 V.  The total output power is 5.5 W.  __ 

LED current regulator has low dropout -  EDN Design Ideas:  05/24/2016    Meet an interesting addition to the field of LED current regulators __ Circuit Design by Peter Demchenko

Limits DV/DTand Capacitor inrush at Regulator Turn On -  10/11/07 EDN Design Ideas:  Adding a simple circuit to the adjust pin of a regulator controls the dV/dt of the output voltage, limiting inrush current __ Circuit Design by W Stephen Woodward, Chapel Hill, NC

linear voltage regulator with ultra Low drop -  The circuit is a MOSFET based linear voltage regulator with a voltage drop of as low as 60 mV at 1 ampere.  Drop of a fewer millivolts is possible with better MOSFETs having lower RDS (on) resistance.  The circuit in Fig.1 uses 15V-0-15V secondary __ Designed by Radio LocMan

LM2940 12V 1A Low Dropout Regulator -  Find out how to use an LM2940 to efficiently regulate voltage.   __ Designed by REUK-Renewable Energy UK website

LM2941 1A Low Dropout Adjustable Regulator -  Find out about the LM2941 - an adjustable regulator with very low dropout voltage.   __ Designed by REUK-Renewable Energy UK website

LM317 adjustable voltage regulator used in Battery Eliminator Circuit -  if you use a 1.5v or a 3v battery powered MP3 player for long periods of time, you may get tired of constantly changing batteries.  Some older players do not work will NiMH
rechargeable batteries so changing out batteries can get expensive.  The circuit be . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2005

LM317 Current Calculator -  A handy online output current calculator for the LM317, LM338, and other linear voltage regulators.   __ Designed by REUK-Renewable Energy UK website

LM317 High Current Voltage Regulator -  Find out how to build an LM317T based high current voltage regulator.   __ Designed by REUK-Renewable Energy UK website

LM317 used as 0 to 3V Adjustable Regulator -  10/02/08  EDN Design Ideas:  LM317 acts as an adjustable regulator __ Circuit Design by Vladimir Rentyuk, Modul-98 Ltd, Zaporozhye, Ukraine

LM317 Voltage Calculator -  A handy online output voltage calculator for the LM317, LM338, and other linear voltage regulators.   __ Designed by REUK-Renewable Energy UK website

LM317T Heatsinking -  Choosing a heatsink for use with an LM317T voltage regulator.   __ Designed by REUK-Renewable Energy UK website

LM317T Voltage Regulator Chip -  Learn about the LM317T and its uses in renewable energy projects.   __ Designed by REUK-Renewable Energy UK website

LM723 Power Supply Voltage & Current Regulated -  A Versatile and Most useful device, Especially for the Beginner __ Designed by G.L. Chemelec

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Regulators:  #'s - A       B - G       H - Q       R - S       T  - Z

 


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