Wednesday, August 6, 2008

opamp Precision Rectifier

Hi friends,
this is a simple opamp precision rectifier. Very useful in rectifying or making bipolar signals unipolar, specially in small signals where we cannot afford to have that 0.7v drop across the normal diode bridge rectifier.
The circuit shown here gives rectified output going only in the negative direction, as my application required it that way. But if you want rectified positive output, just reverse the direction of both the diodes and you'll get it!

75 comments:

  1. Is this a full wave rectifier ?

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  2. Can it be altered to a half wave?

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  3. Yes, remove the vertical diode, put the horizontal diode at 1st opamp output terminal, and connect the feedback resistor between pin2 and the other terminal of the diode. Remove the second opamp & remaining parts.

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  4. Can we also amplify the signal in the same circuit?

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  5. Nice project, good thought, keep blogging.

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  6. please put the description about this circuit.....

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  7. please give some decsription about the working of the circuit..

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  8. This has got some really conceptual working. Please provide circuit description!

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  47. An effective method for accurately converting AC signals to DC is the op-amp precision rectifier. Even with low-level signals, accurate rectification is ensured by using operational amplifier topologies. Because to its design, diode voltage dips are effectively eliminated, producing accurate output voltage reproduction. In applications requiring extreme precision, such instrumentation and signal processing circuits, this gadget is indispensable. Its low power consumption and small size add to its versatility. All things considered, the op-amp precision rectifier is a dependable and effective part that accurately converts alternating current to direct current.
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  52. An operational amplifier (op-amp) is a highly efficient precision rectifier that can convert AC signals to DC without causing the voltage drop that is commonly associated with diode rectifiers. It is perfect for signal processing applications where preserving signal integrity is essential because of its high precision and minimal distortion. Its rectifying capacity for tiny signals makes it very useful for precision instrumentation.General law encompasses rules and regulations established by governments to maintain order, protect rights, and ensure justice. It includes civil, criminal, and administrative law, governing areas like contracts, property, and personal conduct. Law serves to resolve disputes, penalize unlawful actions, and provide a framework for societal functioning, ensuring fairness and security within the community.
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  53. When compared to conventional diode rectifiers, a precision rectifier with an op-amp provides better performance, enabling precise signal rectification even at low input voltages. It is perfect for applications like signal processing and AC voltage measurement since it successfully removes problems with diode threshold voltage. Perfect for accurate analog circuits, it is efficient, dependable, and compact
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  58. An opamp precision rectifier is a circuit that uses an operational amplifier (opamp) to rectify signals with high accuracy, even when the input voltage is lower than the typical forward voltage of a diode. This type of rectifier is highly effective in applications requiring precise signal processing, such as audio, instrumentation, and measurement systems, where conventional diode rectifiers may not be suitable due to their non-linear characteristics.Maryland Indecent Exposure Law makes it illegal to knowingly expose one's private parts in a public place or in the presence of others in a manner that could offend or alarm them. The law is designed to protect public decency and prevent unwanted exposure that may be deemed offensive or inappropriate.

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  67. What sets precision rectifiers apart is their ability to work with both positive and negative signals. This makes them ideal for applications where accurate signal processing is critical, such as in audio systems, instrumentation, and high-frequency circuits. The op-amp allows for an ideal rectification process with no voltage drop, making it an excellent choice for low-voltage applications.
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