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Voltage Regulator Circuits, Page 5
Last Updated on: Friday, March 12, 2010 12:07 PM
 

 

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

Get Power Out of PC Parallel Port - An article which includes circuits, shares how to us a parallel port to connect to a very wide selection of devices like software protection dongles, removable disks, modems, network adapters, printer sharing units, parallel port extenders, soundcards, electronic telecard readers and many circuits. (added 5/02)

High Current Power Supply (Aaron Cake) - (circuit / schematic added 6/05)

High Current Regulated Power Supply - (electronic circuit added 04/05)

High Current Regulated Supply - Current of LM317 voltage is increased by using an additional power transistors. ….(electronic schematic added 11/08)

High Current Supply uses Standard Three Terminal Regulator - 07/22/04 EDN-Design Ideas:  This Design Idea implements a simple voltage regulator that delivers high output current. The basic idea is to parallel-connect multiple three-terminal regulators.....(design idea added 1/05)

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 Precision GPS/TV Controlled Reference Oscillator - (circuit / schematic added 6/05)

High Stability Regulators - National Semiconductor Application Notes,28-Jun-1996/ (app note added 3/03)

High Voltage Buck Regualtors provide High Current Low Profile Power Solutions for FireWire Peripherals - DN287  Design Notes (Linear Technology) (app note added 1/06)

Hot swap circuit allows two computers to monitor an RS232 channel - 05/29/08 EDN-Design Ideas:  A hot-swap serial-interface circuit allows two computers to monitor all the traffic on an RS-232 port.....(design idea added 06/07/08)

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)

Hot swap structure offers improved redundancy - 01/09/03 EDN-Design Ideas:  For redundancy purposes, a number of power supplies, using ORing diodes, can work into the same load. During maintenance, when you can remove any power supply, the minimum possible power perturbation at the load is desirable. To compensate.....(design idea added 1/05)

HT0640 for Electronic Line Switch - Supertex Semiconductors  (app note added 2/06)

Hysteretic regulators provide high Performance at Low cost - 09/02/04 EDN-Design Ideas:  Hysteretic voltage regulators offer the potential advantages of simplicity, fast response, 100%-duty-cycle operation, high efficiency at light loading, and low cost. They need no loop-compensation components to add delays; thus, response time to a load change is less than one switching cycle. What's the catch?.....(design idea added 1/05)

IC Provides OnCard Regulation for Logic - National Semiconductor Application Note 04-Nov-1995/ (app note added 3/03)

IC Voltage Reference has 1 Ppm Per Degree Drift - National Semiconductor Application Note 04-Nov-1995/ (app note added 3/03)

Improving Power Supply Reliability with IC Power Regulators - National Semiconductor Application Note 04-Nov-1995/ (app note added 3/03)

Increasing Regulator Current - you can boost 78xx regulator output with1-power transistor (added 5/02)

L200 Regulator Circuit - easy to power supply with1-single L200 IC, offers a variable current limit of up to2 A, as well as voltage regulation (added 5/02)

Lantern Flasher/Dimmer - The electronic lantern control circuit adds high-efficiency dimming and flashing to an existing battery-powered lantern or flashlight or to a custom design.  For the car it makes a great lamp for changing a flat tire, back seat reading or emergency engine work.  The flasher mode is useful for warning other drivers of your troubles and it may be adjusted ,... (Tony van Roon's electronic design added 2/06)

Lantern Flasher/Dimmer (techlib) - The electronic lantern control circuit (fig. 1) adds high-efficiency dimming and flashing to an existing battery-powered lantern or flashlight or to a custom design. For the car it makes a great lamp for changing a flat tire, back seat reading or emergency engine work. The flasher mode is useful for warning other drivers....(circuit / schematic design added 6/06)

Lantern Flasher/Dimmer (tomzi.geo) - Basically a high-efficiency dimmer, but can also be used as a flasher. In dimmer mode, the LM358 (dual op-amp) is wired to send pulses at a constant frequency. By adjusting the width of these pulses, brightness of the bulb is controlled. In flasher mode, the same potentiometer(circuit / schematic added 03/0303)

LB-15: Linear Brief 15 High Stability Regulators - National Semiconductor Application Note  (app note added 2/06)

LB-34: Linear Brief 34 a Micropower Voltage Reference - National Semiconductor Application Note  (app note added 2/06)

LB-41: Linear Brief 41 Precision Reference uses Only Ten Microamperes - National Semiconductor Application Note  (app note added 2/06)

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. (added 3/05)

LDO Circuit Provides Smart Power Monitoring - 10/24/96 EDN-Design Ideas:  (design idea added 3/03)

Light Bulb Voltage Regulator  - (circuit added 7/02)

Line Power Supply - This circuit provides a regulated output without a power transformer. It is similar to common circuits, except that a zener diode is replaced with an SCR. This is far more robust against line voltages surges than a zener diode version, plus there is no heat generation. C1 sets the available current (20mA/uF @ 60Hz)....Designed by Andrew R. Morris  (added 09/05)

Linear Brief 41 Precision Reference uses Only Ten Microamperes - National Semiconductor Application Note 02-Mar-1999/ (app note added 3/03)

Linear Regulator Converts 3.3 to 2.9V - 03/16/95 EDN-Design Ideas:  (design idea added 03/03/03)

Linear regulator=Low cost DC/DC converter - 06/13/02 EDN-Design Ideas:  The circuit in Figure 1 is a good choice if you need a power supply with high efficiency and you don't want to use expensive dc/dc-converter ICs. The heart of the circuit is IC1, the common, inexpensive LM7805 linear regulator. The external switch is a pnp transistor; the circuit can easily source more than 1A output current.....(design idea added 1/05)

Linear Regulators Theory of Operation and Compensation - National Semiconductor Application Note 24-May-2000/ (app note added 3/03)

LM105An Improved Positive Regulator - National Semiconductor Application Note 04-Nov-1995/ (app note added 3/03)

LM267X 3A 5A Evaluation Board - The LM267X evaluation board was developed for the evaluation of LM267X SIMPLE SWITCHER series of 3 Amp and 5 Amp high efficiency step-down (Buck) switching voltage regulators.  (app note added 3/05)

LM317 Regulator Circuit - (electronic schematic / circuit added 4/02)

LM317 Regulator with Pass Transistor - (electronic schematic / circuit added 4/02)

LM317 variable power supply - A truly timeless circuit. LM317 is a versatile and highly efficient 1.2-37V voltage regulator that can provide up to 1.5A of current with a large heat sink. It's ideal for just about any application. This was my first workbench power supply and I still use it.  Since LM317 is protected against short-circuit, no fuse is necessary.....(added 10/05)

LM317 Variable Voltage Regulator - (electronic schematic / circuit added 4/02)

LM317T Variable Voltage Regulator - The LM317T is a adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 amps over an output range of 1.25 to 37 volts. The device also has built in current limiting and thermal shutdown which makes it essentially blow-out proof.,.... (added 05/06/07)

LM340 Series Three Terminal Positive Regulators - National Semiconductor Application Note 04-Nov-1995/ (app note added 3/03)

LM385 Feedback Provides Regulator Isolation - National Semiconductor Application Note  (app note added 2/06)

LM78S40 Switching Voltage Regulator Applications - National Semiconductor Application Note  (app note added 2/06)

Logic PSU with OverVoltage Protection - 5 volt regulated power supply for TTL and 74LS series integrated, includes output overvoltage fault protection/ (added 3/03)

Low Battery Detector Preregulates Input Voltage - 08/15/96 EDN-Design Ideas:  (design idea added 3/03)

Low dropout linear regulators deliver constant currents - 5/11/06 EDN-Design Ideas:  High-side current source uses a positive-output linear voltage regulator to deliver 25 mA.....(design idea added 10/06)

Low dropout linear regulators double as voltage supervisor circuits - 03/16/06 EDN-Design Ideas:  You can use this circuit as a voltage supervisor or as a controlled-characteristic linear-voltage regulator.....(design idea added 10/06)

Low dropout regulator SMPS cascade suppress ripple maintain efficiency - 08/03/06 EDN-Design Ideas:  Two regulators work better than one in noise-sensitive applications.....(design idea added 10/06)

Low Voltage High Current Time Delay Circuit - (circuit / schematic added 2/03)

Low-dropout 12V regulator LM324 - (circuit / schematic added 6/05)

LT1580 Fast Response Low Dropout Regulator Achieves 0.4 Dropout at 4 Amps - DN119  Design Notes (Linear Technology) (app note added 2/06)

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)....(added 3/05)


 
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