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Driver Circuits
Drivers:  #'s - A        B - E       F - L       M - R       S - Z

Last Updated on:
Wednesday, November 29, 2017 05:38 AM

Circuits Designed by Dave Johnson, P.E. :
  • Drive a LED with an Intensity Ramping Mode  -  The circuit below was designed to drive a LED with an intensity ramping mode. Two 555 timers generate two different triangle waveforms. The upper device generates a 10KHz signal while the lower unit produces a 1Hz signal. The two signals are fed to a . . . [Hobby Circuit designed by Dave Johnson P.E.,  12/21/07]

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

Data Multiplexer Adds Cursor to LED Display Driver  -  03/30/95 EDN Design Idea   A data multiplexer, IC2, enables the LED-display driver, IC1, in Fig 1 to highlight any selected digit by intensifying its brightness. This cursor function enables the use of the display for data entry as well as readout.. . .  [by Gary Sellani, Maxim Integrated Products, Sunnyvale, CA]

 

Data-Acquisition System Is Cheap and Simple  -  12/31/69  EDN Design Idea   The most important criteria of a data-acquisition system for college science laboratories are simplicity and price rather than precision or speed. The data-acquisition system in Figure 1 offers adequate precision of less than 0. 5% and speed of 1 Hz to rep. . .  [by Tom Lyons Fisher, Juniata College, Huntingdon, PA ]

 

DC Motor Driver with L6203  -  The L6203 is a DMOS full bridge driver, which can handle the high peak current up to 5A and supply voltage up to 48V with RDS (ON) of just 0. 3 ohm. The chip can run the motor at 4A continuous with proper heat sinking. . . . 

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DC/DC converter operates from phone line  -  01/15/98    EDN Design Idea   DC/DC converters for use inside the telephone handset require operation from the high-source-impedance phone line. Additionally, the CCITT specifications call for maximum on-hook power consumption of 25 mA. The DC/DC converter in Fi. . .  [by Gary Shockey, Linear Technology Corp, Milpitas, CA]

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DCC Zero Stretching Simulator (LM555)  -  This circuit is designed to simulate the 'Zero Stretching' function of Digital Command Control systems used by model railroads. This circuit was used drive the booster while testing the operation of block occupancy detectors and DCC signal failure circuits while in the zero stretching mode. . .  [from Rob Paisley's Model Train web site]

 

Deliver Dimming Control for White-LED Driver  -  10/28/04  EDN Design Idea   The demand for power in color cell-phone handsets is constantly increasing. New applications steadily emerge, making it imperative to reduce power consumption in the design. Examination of usage data shows that than 50% of the power. . .  [by Wallace Ly, National Semiconductor, Santa Clara, CA]

 

Design & Program Examples for Lighting MGMT Unit LP5526 (Rev. A)  -  LED lighting designers are challenged with meeting their efficiency and reliability goals faster in advanced LED lighting designs. LED lighting customers seeking the latest in innovative and affordable LED lighting solutions can benefit from TI's broad product portfolio of LED drivers, AC/DC, DC/DC, power management devices, wireless and wired interface control and embedded processors. LED designers have the option of not only controlling the power stage, but regulating LED currents as well, eliminating the need for multiple components and reducing system cost. . . .  [Texas Instruments App Notes, 30-Apr-13]

 

Design Notes: 60V, Synchronous Step-Down High Current LED Driver  -  03/01/14 EDN Design Note   This circuit provides much better performance and higher power handling than a Zener diode The meaning of the term “high power LED” is rapidly evolving. Although a 350mA LED could easily earn the stamp of “high power” a few years ago, it could not hold a candle to the 20A LEDs or the 40A laser diodes of today. High power LEDs are now used in DLP projectors, surgical equipment, stage lighting, automotive lighting, and other applications traditionally served by high intensity bulbs. . .  [by Hua (Walker) Bai, also see Linear Technology Design Note 508]

 

Design Notes: LT3791 Buck-Boost Controller Drives High-Power LEDs, Charges High-Voltage Batteries  -  08/29/13  EDN Design Note The LT®3791 is a 4-switch synchronous buck-boost DC/DC converter that regulates both constant-current and constant-voltage at up to 98. 5% efficiency with a single inductor. It can deliver hundreds of watts and features a 60V input and output rating, making it ideal for driving high power LED strings and charging high voltage batteries when both step-up and step-down conversion is needed. It can also be used as a constant voltage buck-boost regulator with current limiting and monitoring for both input and output. . .  [by Keith Szolusha, Linear Technology Corporation, Design Note 501]

 

Designing Energy-Efficient Handheld Illum Solutions (Rev. A)  -  LED lighting designers are challenged with meeting their efficiency and reliability goals faster in advanced LED lighting designs. LED lighting customers seeking the latest in innovative and affordable LED lighting solutions can benefit from TI's broad product portfolio of LED drivers, AC/DC, DC/DC, power management devices, wireless and wired interface control and embedded processors. LED designers have the option of not only controlling the power stage, but regulating LED currents as well, eliminating the need for multiple components and reducing system cost. . . .  [Texas Instruments App Notes, 30-Apr-13]

 

Determining MOSFET Driver Needs for Motor Drive Applications  -  Application Note Published 31-Dec-03. . .  [Microchip]

 

Differential Amp drives high-speed ADC  -  06/21/01 EDN Design Idea   The schematic in Figure 1 is the discrete-element version of an A/D-converter drive circuit. The circuit converts a single-ended input to a differential output. The ADC's reference voltage determines the common-mode range of the differential outputs. The circuit contains two AD9631 Amplifiers—one connected in noninverting mode, and the other connected in inverting mode. The OP279 amplifiers buffer and scale the ADC's reference voltage to set the common-mode range of the two outputs. . .  [by Chau Tran]

 

Differential driver doubles as versatile RF-switch driver  -  01/06/05    EDN Design Idea   Designed as a high-speed driver for 12-bit ADCs, the AD8137 controls SPDT GaAs (gallium-arsenide] FET-MMIC (microwave-monolithic-IC] and PIN-diode RF switches and thus provides a low-cost and versatile alternative to conventional switch. . .  [by John Ardizzoni, Analog Devices, Wilmington, MA]

 

Digisound ring modulator  -  Dual Ring Modulator based on MC1496. The X and Y inputs are AC coupled and are capable of accepting 10V p-p signals. Comprises two totally independent ring modulators on the same PCB which produces the sum and difference with two input signals. Ideal for the production of a whole range of sounds including bell and gong sounds. . .   

 

Dimming Techniques for Switched-Mode LED Drivers  -  LED lighting designers are challenged with meeting their efficiency and reliability goals faster in advanced LED lighting designs. LED lighting customers seeking the latest in innovative and affordable LED lighting solutions can benefit from TI's broad product portfolio of LED drivers, AC/DC, DC/DC, power management devices, wireless and wired interface control and embedded processors. LED designers have the option of not only controlling the power stage, but regulating LED currents as well, eliminating the need for multiple components and reducing system cost. . . .  [Texas Instruments App Notes, 30-Jul-09]

 

Discrete component buck converter drives HB LEDs  -  03/05/09  EDN Design Idea   With just a few components, you can provide sufficient power to operate a high-brightness LED from a battery. . .  [by Dhananjay V Gadre, Netaji Subhas Institute of Technology, New Delhi, India]

 

Dot/Bar Display Driver  -  The LM3916 is a monolithic integrated circuit that 2 senses analog voltage levels and drives ten LEDs, LCDs, or Vacuum Fluorescents LCDs or vacuum fluorescent displays, providing an electronic version of the popular VU meter. One pin by User changes the display from a bar graph to a moving dot display. . .  [SNVS762B – JANUARY 2000 – REVISED MARCH 2013]

 

Double the protection of a laser driver using a 1V power supply  -  04/09/13 EDN Design Idea   Drive a laser pointer with a single cell discharged to as low as 1V, and improve safety reliability with redundant current control transistors. . .  [by liao taishan]

 

Drive 12 LEDs With One I/O Line  -  02/04/10  EDN Design Idea   Use a binary counter to generate LED-lighting codes. . .  [by Charaf Laissoub, Maisons Alfort, France]

 

Drive 16 LEDs With One I/O Line  -  06/09/11  EDN Design Idea   Over the last few years, several Design Idea     have described how to use just a few microcontroller I/O pins to drive many LEDs (references 1 through 7). The circuit in Figure 1 can drive 16 LEDs with just one pin and two shift registers. You can use the c. . .  [by Zoran Mijanovic and Nedjeljko Lekic, University of Montenegro, Podgorica, Montenegro]

 

Drive 9V Solenoids from 3V Battery  -  08/17/95 EDN Design Idea   At times, it may be necessary to power a solenoid-type pulsed actuator from a low-voltage battery in portable equipment. The circuit in Fig 1 accomplishes this task using a standby current of 10 µA. The design takes advantage of . . .  [by Craig Varga, Linear Technology Corp, Milpitas, CA]

 

Drive a blue LED from a 3V battery  -  02/15/07  EDN Design Idea   Two 1. 5V cells and a few components can light a blue LED. . .  [by Sergi Sánchez, Federal Signal Vama SA, Vilassar de Dalt, Spain]

 

Drive a Complementary Output Stage and Step-Up Audio Transformer  -  File contains several designs, please scroll to find this circuit. T he following circuit uses the flasher circuit to drive a complementary output stage and step-up audio transformer. This circuit is used in a high voltage breakdown tester but it would be useful for a variety of applications. . . .  [Charles Wenzel (unless otherwise noted)]

 

Drive a LED with an Intensity Ramping Mode  -  The circuit below was designed to drive a LED with an intensity ramping mode. Two 555 timers generate two different triangle waveforms. The upper device generates a 10KHz signal while the lower unit produces a 1Hz signal. The two signals are fed to a . . . [Hobby Circuit designed by Dave Johnson P.E.,  12/21/07]

 

Drive a single coil latching relay without an H-bridge circuit  -  03/05/09  EDN Design Idea   Drive current in both directions to cut power consumption. . .  [by Carlos Cossio, Santander, Spain]

 

Drive High Intensity White LEDs Efficiently using the PIC16C781  -  Application Note Published 17-Jul-02. . .  [Microchip]

 

Drive inductive loads  -  05/25/00 EDN Design Idea   In the driver circuit in Figure 1 , the system controller provides the V COMMAND signal. V COMMAND equals the desired load current multiplied by R 8. When the controller applies this voltage to R 1 , the output of IC 1 goes high. . .  [by Carlisle Dolland, Honeywell Engines and Systems, Torrance, CA]

 

Drive latching relays  -  02/01/96  EDN Design Idea   Figure 1 shows a low-parts-count circuit that can drive one- or two-coil latching relays. Latching relays are useful in sensitive analog designs. The 74ACT174 hex flip-flop has Ample capability to drive the Aromat TQ2E series of . . .  [by Roy McCammon, 3M Austin, TX]

 

Drive LCD With Just One Wire  -  12/03/07  EDN Design Idea   A Microchip PIC10F family microcontroller sparks an HD44780 LCD using a single I/O pin. . .  [by Noureddine Benabadji, University of Sciences and Technology, Oran, Algeria]

 

Drive mixed types and quantities of LEDs  -  10/03/02  EDN Design Idea   Portable systems often use LEDs of different colors and in varying quantities of each color. Some examples are white for the display backlight, green for keypad illumination, and red for power. Typically, the LEDs derive power from . . .  [by Mark Pearson, Maxim Integrated Products, Sunnyvale, CA]

 

Drive Single-Coil Latching Relays  -  11/13/08  EDN Design Idea   Five driver circuits operate single-coil latching relays. . .  [by Alfredo H Saab and Tina Alikahi, Maxim Integrated Products, Sunnyvale, CA]

  

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Drivers:  #'s - A        B - E       F - L       M - R       S - Z


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