Modulators Circuits   Page 4
Modulators:  #-E     F-L      M-N       O-P      Q-Z
Last Updated on: Friday, March 12, 2010 12:07 PM

Phase Shift Radio Direction Finder:  (circuit / schematic added 2/03)

Phase Shifter Yields Slope Polarity Detection:  03/14/96 EDN-Design Ideas / (added 03/03)

Phase Shifter:  (Electronic circuit added 7/03)

Processor's PWM output Controls LCD/LED Driver:  05/27/04 EDN Design Ideas  /  (added 1/05)  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 driver, a negative-voltage LCD driver, or a current-controlled LED driver. cost alternative that provides not only a 4- to 20-mA output,

Provide 4  to 20 MPWM Control:  09/01/98 EDN-Design Ideas / (Electronic circuit added 5/02)   -- Are useful when you use4- to20-mA current-loop signals to control a PWM signal

Pulse Width Modulation A/D Conversion Techniques with COP800 Family Microcontrollers:  National Semiconductor - Application Note   (added 2/06)

Pulse Width Modulation DC Motor Control:  controls the motor speed by driving the motor with short pulses (Electronic Schematic / circuit added 4/02)

Pulse Width modulator 555:  (Electronic circuit added 4/05)

Pulse Width Modulators:  generating PWM waveform is extremely simple with the circuits shown in this page (Electronic Schematic / circuit added 4/02)

Pulse Width-to-Voltage Converter:  (circuit added 7/02)

PWM AC-DC Power Supply Design - App Note 35:  Apex Microtechnology Corp - App Note - (Circuit / schematic design added 6/06)

PWM ADC is Surprisingly Accurate:  06/09/94 EDN-Design Ideas / (Electronic Circuit diagram added 03/03)  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, the slopes being proportional to VIN and VREF-VIN. The circuit works well in µP-based systems that have the spare capacity to perform the mark/space measurement and the necessary calculations.....   

PWM Circuit uses one OpAmp:  07/06/00 EDN-Design Ideas / (added 6/03) circuit delivers a rectangular signal with duty cycle varying between0 and100% in response to an input signal varying from0 to5V dc

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

PWM DC motor Control with SG3525:  (Electronic circuit added 4/05)

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

PWM motor Controller:  (Electronic circuit added 4/05)

PWM Motor Speed Controller/DC Light Dimmer:  (Electronic circuit added 4/05)

PWM Motor/Light Controller Variations:  diagrams are for12V operation and there are high side (common ground) and low side (common +12V) versions (Electronic Schematic / circuit added 4/02)

PWM Speed Control:  includes theory and some example circuits (Electronic Schematic / circuit added 4/02)

PWM Watchdog Circuit Ensures upper Bounds:  11/07/96 EDN-Design Ideas / (Electronic circuit added 5/02)   

PWM White LED Drivers:  (Electronic circuit added 4/05)