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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) |
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PPM & VU Meter - A versatile and useful VU meter circuit, can also operate as a
Peak Program Meter (circuit added 6/07) |
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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) |
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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) |
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Pulse Width Modulation - ...(spice design added 02/09) |
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Pulse Width Modulation DC Motor Control (Aaron Cake) - controls the motor speed by
driving the motor with short pulses (added 5/02) |
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Pulse Width Modulator 4093 - (Tony van Roon's circuit added 9/04) |
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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) |
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Pulse Width Modulator, CD4093 - (Tony van Roon's schematic / circuit added 08/09) |
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Pulse Width Modulator, LM324 - (Tony van Roon's circuit design added 08/09) |
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Pulse Width Modulator, NE555 - (Tony van Roon's circuit added 9/04) |
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Pulse Width Modulators - generating PWM waveform is extremely simple with the
circuits shown in this page (added 5/02) |
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Pulse Width-to-Voltage Converter - (electronic schematic / circuit added 4/02) |
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PWM AC/DC Power Supply Design Apex-AN35 - Apex App Note (added 08/08/08) |
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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) |
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PWM Basics Apex-AN30 - Apex App Note (added 08/08/08) |
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PWM circuit controls sensor's AGC - 03/29/01 EDN-Design Ideas:.....(design idea
added 2/06) |
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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) |
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PWM circuit uses fuse to sense Current - 12/23/99 EDN-Design Ideas:.....(design
idea added 3/03) |
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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) |
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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) |
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PWM Controller - 555 Timer based PWM motor control project for electric fan or
other DC motor (added 4/02) |
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PWM Controller Drives LEDs from High Voltage Lines - 03/04/04 EDN-Design Ideas:
(design idea added 1/05) |
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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) |
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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) |
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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) |
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PWM Functionality Test Apex-AN34 - Apex App Note (added 08/08/08) |
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PWM Low Pass Filtering Apex-AN32 - Apex App Note (added 08/08/08) |
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PWM Methods for Expanding CCRL Dimming Range Using the ML4877 or ML4878/ ABR-42023
- Fairchild Application Notes / (app note added 6/06) |
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PWM Motor Control (mondo-technology) - ….(circuit design added 05/09) |
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PWM Motor Controller - (electronic circuit added 4/05) |
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PWM Motor Speed Controller/DC Light Dimmer - DC Light Dimmer using a LM324 IC
(circuit / schematic design added 6/06) |
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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) |
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PWM Power Amplifier - Based on the ColdAmp BP4078 400W module, Class-D is here.
Definitely worth looking at! (schematic added 6/07) |
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PWM Speed Control - includes theory and some example circuits (added 4/02) |
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PWM Subwoofer Amplifier - Using a ColdAmp BP4078 module, this article has complete
construction details (schematic added 6/07) |
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PWM using 555 - A simple oscilator with PWM that can be used to control speed of
motors or light intensity. (4/29/2006) |
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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) |
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PWM White LED Drivers - (electronic circuit added 4/05) |
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PWM with 555 - Some useful circuits using the LM555 IC.Scroll to find the PWM with
555 circuit (11/06) |
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PWM, a Software Solution using the 16CXXX Devices - Microchip Application Note
Published 26-Aug-97 (app note added 06/06/06) |
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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) |
