Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 30,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to material posted by the designer. 
Please let us if you would like us to link to or post your design.
HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

 

Pulse Width Modulators (PWM), page 1
PWM Circuits:  #-A     B-O     P     Q-Z
 Last Updated on: Monday, June 03, 2013 03:34 PM
Circuits Designed by Dave Johnson, P.E. :
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
12V PWM Motor/Light Controller -  The diagrams are for 12V operation only and there are high side (common ground) and low side (common +12V) versions. The low side version of the circuit uses an N Channel FET, the high side version of the circuit uses a P Channel FET. N Channel devices tend to handle more current than P Channel devices, they are also less expensive. The high side version of the circuit is useful when one side of the load has to be grounded.... [G. Forrest Cook]
555 Timer Forms Simple PWM Motor Controller -  Using a CMOS version of the 555 timer, this circuit can be used to control the speed of a motor by adjusting the duty cycle of the pulses sent to the motor.... [Designed by David A. Johnson]
8 Channel PWM Code AVR Controllers -  (circuit schematic added 6/07)
A Simple Circuit for Driving MicroController Friendly PWM Generators -  Microchip Application Note Published 27-Jun-05  (app note added 2/06)
ABR-42023/ PWM Methods for Expanding CCRL Dimming Range Using the ML4877 or ML4878 -  Fairchild Application Notes / (app note added 6/06)

Active Clamp Forward Reference Design -  This reference design is an active-clamp forward converter that can deliver up to 24 A of continuous current at 5 V from an input range of 35 V to 75 V. The active-clamp topology with self-driven secondary synchronous MOSFETs allows  device to achieve high efficiencies....(added 6/06)
Active-clamp/reset PWM IC becomes more versatile -  26-Jun-03 Issue of EDN  The UCC3580 (www.ti.com], IC1 in Figure 1, is an active-clamp/reset-PWM IC that has all the requisites of a power-supply IC except for current limit. You can use the shutdown pin (16] for this purpose (see the UCC3580 data sheet]. But when the shutdown pin activates, the soft-start capacitor normally connected to Pin 15 discharges, and the converter starts again, resulting in hiccup mode.... [Design Idea by Gowripathi and M Sindhu, ITI Ltd, Bangalore, India]

AN268 PWM Amplifier Output Power Calculator -  (app note added 6/07)
AN-292: Applications of the LM3524 Pulse-Width-Modulator -  National Semiconductor Application Note  (app note added 2/06)
AN-4129/ Green Current Mode PWM Controller FAN7601 -  Fairchild Application Notes / (app note added 6/06)
AN538: Using PWM to Generate Analog Output -  Microchip Application Note Published 26-Aug-97  (app note added 2/06)
AN539: Frequency & Resolution Options for PWM Outputs -  Microchip Application Note Published 26-Aug-97  (app note added 2/06)
AN564: Using the PWM -  Microchip Application Note Published 26-Aug-97  (app note added 2/06)
AN-600: Embedding Temperature Information in the ADXL202's PWM Outputs -  AN-600 Analog Devices Application Notes....[App Note]
AN-607: Pulse Width Modulation A/D Conversion Techniques with COP100% Family MicroControllers -  National Semiconductor Application Note  (app note added 2/06)
AN654: PWM, a Software Solution using the 16CXXX Devices -  Microchip Application Note Published 26-Aug-97  (app note added 2/06)
AN655: D/A Conversion using PWM & R-2r Ladders to Generate Sine & DTMF Waveforms -  Microchip Application Note Published 26-Aug-97....[App Note]
AN771: Suppressing Acoustic Noise in PWM Fan Speed Control Systems -  Microchip Application Note Published 27-Jul-04  (app note added 2/06)
AN772: Speed Error in PWM Fan Control Systems TC646, TC647, TC649 -  Microchip Application Note Published 27-Jul-04  (app note added 2/06)
AN-815: Variable Range PWM A/D for COP820CJ -  National Semiconductor Application Note  (app note added 2/06)
AN-824: Eight Channel Eight Bit PWM Controller -  National Semiconductor Application Note  (app note added 2/06)
Analog switch converts 555 timer into pulse width modulator -  15-Feb-07 Issue of EDN  Added CMOS switch enhances a PWM oscillator.... [Design Idea by Jordan Dimitrov, Tradeport Electronics, Vaughan, ON; Edited by Brad Thompson and Fran Granville, Canada]
AN-H23: Avoiding Turn-on Oscillations in HV91 Family PWM ICs -  Supertex Semiconductors  (app note added 2/06)
Apex-AN30 PWM Basics -  6/2002, AN30UREVD : 365 Kb (Apex App Note added 08/08/08)
Apex-AN32 PWM Low Pass Filtering -  2/2001, AN32UREVD : 1508 Kb (Apex App Note added 08/08/08)
Apex-AN33 Spice Model & PWM Amplifier Applications -  6/2007, AN33UREVB : 435 Kb (Apex App Note added 08/08/08)
Apex-AN34 PWM Functionality Test -  2/2001, AN34UREVC : 133 Kb (Apex App Note added 08/08/08)
Apex-AN35 PWM AC/DC Power Supply Design -  12/1999, AN35UREVA : 332 Kb (Apex App Note added 08/08/08)
Apex-AN41 Stability & Biasing for PWM Amplifiers -  11/2004, AN41UREVC : 1766 Kb (Apex App Note added 08/08/08)
Applications of the LM3524 Pulse-Width-Modulator -  National Semiconductor Application Note  (app note added 2/06)
Avoiding Turn-on Oscillations in HV91 Family PWM ICs -  Supertex Semiconductors  (app note added 2/06)

PWM Circuits:  #-A     B-O     P     Q-Z
HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info

 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2013 David A. Johnson & Associates.  All Rights reserved. 
 Linking is welcomed but COPYING any content or graphics to your web site is expressly prohibited.