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Rectifier Circuits, Page 1
Rectifiers:  #'s - H     I - Z  
Last Updated on:
Friday, August 29, 2008 02:33 PM

 
Circuits Designed by Dave Johnson, P.E. :
  • Full Wave Rectifier
    This is a classic circuit that can accurately convert an AC signal to DC.  At 40KHz the input signal can be as low as 0.05 volts peak to peak. 
    (added 12/04)


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

120 VAC Lamp Dimmer (full wave SCR):  (Circuit / schematic design added 6/06)

120 Volt AC Lamp Dimmer (Full Wave SCR):  (Circuit / schematic design added 6/06)

AB-109: High Speed Precision Rectifier:  AB-109 - Analog Devices Application Notes  (Circuit / schematic design added 6/06) The low offsets and excellent load driving capability of the OP-27 are key advantages in this precision rectifier circuit.

AN-557: Optimizing the Ultra-Fast POWERplanar Rectifier Diode for Switching Power Supplies:  National Semiconductor - Application Note   (Circuit / schematic design added 6/06)

Circuit Forms Constant Current SCR:  02/01/01 EDN-Design Ideas / (Circuit / schematic design added 6/06)

Circuit offers improved active rectification:  02/06/03 EDN Design Ideas  /  (added 1/05)  Rectifiers convert ac signals to dc. You can combine a diode and a load resistor to create a half-wave rectifier, provided that the amplitude of the ac source is much larger than the forward drop of the diode (typically 0.6V). Unfortunately, you can't use this method to rectify signals that are smaller than a diode drop....

Fast Rectifier Circumvents Input Level Effects:  12/22/94 EDN-Design Ideas / (Electronic Circuit diagram added 03/03)

Full wave rectifier has Programmable gain:  11/09/00 EDN Design Ideas /  (added 11/05)

Full wave rectifier operates to 200 MHz:  07/20/95 EDN-Design Ideas / (added 10/05) The circuit in Figure 1 uses current-feedback amplifiers to implement a wideband full-wave rectifier for applications such as a control/AGC system reference or as an amplitude indicator. Putting the full-wave-rectifier diodes in the feedback loop of an op amp works better than does using simple diode-based rectifiers. The op amp's loop gain decreases the distortion and offset voltage that the diodes introduce. Simple diode rectifiers also require large signals and are temperature-sensitive. The op-amp technique works well for signal frequencies to about 500 kHz,...

Full Wave Rectifier uses Current Feedback Amps #1:  03/27/97 EDN-Design Ideas / (Electronic Circuit diagram added 03/03)  Doubling or rectifying a continuous-wave signal by using diode bridges usually causes problems with low inputs or at high frequencies. However, with the use of a 1.2-GHz current-feedback op amp and low-capacitance Schottky diodes in the feedback path, the circuit in Fig 1 can double the input frequency from 100 to 200 MHz. Designing active rectifier circuits with op amps is a well-known technique. Applying this technique to high-speed, current-feedback amplifiers, however, requires slightly different design considerations.
A current-feedback amplifier's bandwidth and stability are dependent on the capacitance of the internal high-impedance node and the external feedback resistor, RF. For a simple gain stage, you select the value of the feedback resistor by plotting open-loop gain vs closed-loop gain for the loop gain of the denominator...

High Speed Precision Rectifier:  AB-109 - Analog Devices Application Notes  (Circuit / schematic design added 6/06) The low offsets and excellent load driving capability of the OP-27 are key advantages in this precision rectifier circuit.

High Speed Rectifier uses No Diodes:  03/30/95 EDN-Design Ideas / (added 03/03)

Rectifiers:  #'s - H     I - Z 



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