Web DiscoverCircuits.com

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

DiscoverCircuits.com, has 28,000+ 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 your design.

HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Book Corner Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson &
Associates
My eBay Auctions Faraday Touch Switches

Pulse Width Modulators (PWM), page 3
PWM Circuits:  #-A     B-O     P     Q-Z

Last Updated on: Friday, March 12, 2010 12:07 PM


 

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

PLD code creates PWM generators - 08/08/02 EDN-Design Ideas: The PLD (programmable-logic-device)code in Listing 1 creates arbitrary-resolution, pulse-width-modulated (PWM)generators. PWM generators are useful as low-bandwidth D/A converters in hardware of microprocessor-based systems. When you pass it through a simple RC lowpass filter, a PWM waveform.....(design idea added 1/05)

PPM & VU Meter - A versatile and useful VU meter circuit, can also operate as a Peak Program Meter   (circuit added 6/07)

Processor's PWM output Controls LCD/LED Driver - 05/27/04 EDN-Design Ideas: The PWM (pulse-width-modulation)output available from many microprocessors is based on an internal 8- or 16-bit counter and features a programmable duty cycle. It is suitable for adjusting the output of an LCD.....(design idea added 1/05)

Provide 4  to 20 MPWM Control - 09/01/98 EDN-Design Ideas:   -Are useful when you use4to20-mA current-loop signals to control a PWM signal.....(design idea added 5/02)

Pulse Width Modulation - ...(spice design added 02/09)

Pulse Width Modulation DC Motor Control (Aaron Cake) - controls the motor speed by driving the motor with short pulses (added 5/02)

Pulse Width Modulator 4093 - (Tony van Roon's circuit added 9/04)

Pulse Width Modulator has Digital control - 06/12/08 EDN-Design Ideas: Operating at 1 Hz, this pulse-width modulator has digital control.....(design idea added 09/08)

Pulse Width Modulator, CD4093  - (Tony van Roon's schematic / circuit added 08/09)

Pulse Width Modulator, LM324 - (Tony van Roon's circuit design added 08/09)

Pulse Width Modulator, NE555 - (Tony van Roon's circuit added 9/04)

Pulse Width Modulators - generating PWM waveform is extremely simple with the circuits shown in this page (added 5/02)

Pulse Width-to-Voltage Converter - (electronic schematic / circuit added 4/02)

PWM AC/DC Power Supply Design Apex-AN35 - Apex App Note (added 08/08/08)

PWM ADC is Surprisingly Accurate - 06/09/94 EDN-Design Ideas: The reference voltage in Fig 1a's simple rail-to-rail PWM ADC is the only critical component. The input-voltage range extends from ground to the power rail which also acts as the reference. The circuit is essentially a variation on the classic dual-slope integrator,.....(design idea added 3/03)

PWM Basics Apex-AN30 - Apex App Note (added 08/08/08)

PWM circuit controls sensor's AGC - 03/29/01 EDN-Design Ideas:.....(design idea added 2/06)

PWM Circuit for Motor Speed Control - Sometimes you want to slow down a brush type DC motor. The most efficient way to do this is with a pulse width modulation (PWM) technique. The hobby circuit below can operate from about 3 volts to 15 volts. The frequency is fixed at about 2KHz but the pulse width can be varied from nearly 100% to 0%. ... ….(designed by David A. Johnson)

PWM circuit uses fuse to sense Current - 12/23/99 EDN-Design Ideas:.....(design idea added 3/03)

PWM Circuit uses One OpAmp - 07/06/00 EDN-Design Ideas: circuit delivers a rectangular signal with duty cycle varying between0 and100% in response to an input signal varying from0 to5V dc.....(design idea added 5/03)

PWM Control for  Hydrogen Generators - Unlike conventional PWM Circuits, This circuit also has a special "Current Limit Control". "If your H-Cell gets hotter and tries to draw more current, This circuit won't let it"…..(circuit / schematic design added 11/06)

PWM Controller - 555 Timer based PWM motor control project for electric fan or other DC motor (added 4/02)

PWM Controller Drives LEDs from High Voltage Lines - 03/04/04 EDN-Design Ideas: (design idea added 1/05)

PWM DC Motor Control with SG3525 - This control circuit is ideal for the accurate control of DC motors as well as other applications like lighting levels and small heaters etc. The circuit converts a DC voltage into series of pulses, such that the pulse duration is directly proportion to the value of the DC voltage. The great advantage of such a circuit is that almost no power is lost in the control circuit....(electronic circuit added 4/05)

PWM DC Motor Speed Control - This is a circuit for controlling the speed of small DC motors, it works nicely as a speed controller for an HO or N gauge model railroad….(circuit add 6/07)

PWM fan Controller - I noticed allot of people like to use the 7V fan mod, this is fine I suppose but it is very inefficient, and it doesn't allow for RPM monitoring. I have Built a fan controller out of fairly cheap and readily available parts that is extremely efficient, reliable and doesn't endanger your computers PSU.….(electronic schematic added 06/09)

PWM Functionality Test Apex-AN34 - Apex App Note (added 08/08/08)

PWM Low Pass Filtering Apex-AN32 - Apex App Note (added 08/08/08)

PWM Methods for Expanding CCRL Dimming Range Using the ML4877 or ML4878/ ABR-42023 - Fairchild Application Notes / (app note added 6/06)

PWM Motor Control (mondo-technology) - ….(circuit design added 05/09)

PWM Motor Controller - (electronic circuit added 4/05)

PWM Motor Speed Controller/DC Light Dimmer - DC Light Dimmer using a LM324 IC (circuit / schematic design added 6/06)

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....(electronic circuit added 4/05)

PWM Power Amplifier - Based on the ColdAmp BP4078 400W module, Class-D is here. Definitely worth looking at!  (schematic added 6/07)

PWM Speed Control - includes theory and some example circuits (added 4/02)

PWM Subwoofer Amplifier - Using a ColdAmp BP4078 module, this article has complete construction details  (schematic added 6/07)

PWM using 555 - A simple oscilator with PWM that can be used to control speed of motors or light intensity. (4/29/2006)

PWM Watchdog Circuit Ensures upper Bounds - 11/07/96 EDN-Design Ideas:   With PWM control of power factor, you need a continuous check on excess pulse width and dead periods to protect a variety of systems that may not incorporate such protection. You also need regular pulsed power to ensure good averaged, reconstructed.....(design idea added 5/02)

PWM White LED Drivers - (electronic circuit added 4/05)

PWM with 555 - Some useful circuits using the LM555 IC.Scroll to find the PWM with 555 circuit (11/06)

PWM, a Software Solution using the 16CXXX Devices - Microchip Application Note Published 26-Aug-97  (app note added 06/06/06)

PWMA High Current Pulse Width ControlExcellent & Real Simple! - Newly Revise Design NOW for Either N or P Channel Mos-Fet's....(design added 12/08)


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

 Linking is welcomed but COPYING any content or graphics to your web site is expressly prohibited.

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