The image to the right shows one typical configuration for a precision rectifier. This is where the op-amp based precision rectifier comes in. When the diode is operating in forward-bias operation, this voltage is generally referred to as the forward “threshold” voltage ($V_$ from our output signal. While we can usually model diodes as components that either act as an open or a short, a small amount of voltage does get dropped over real diodes. We can take the friction out of design and analysis, and simultaneously empower a new generation of engineers and hobbyists to build the systems that will shape the world of tomorrow. Analyzing the circuit, there is only one possible culprit for the difference: the diodes. Iterate and collaborate: simulate, experiment, adjust, and share the results in just a few clicks. In order to acquire the waveform across the output, you will need to place a separate Voltage Reference on the negative leg of the output terminal.Īfter rectifying the AC signal in simulation and in the actual circuit, you may have noticed a smaller peak voltage in the output signal than the input. Remember that the probes are automatically reference to ground. You can see that Diodes D1 – D4 are laid out in a bridge pattern with their anodes on the left and the cathodes on the right and the load is connected across the joint cathodes and the joint anodes.Ĭompare the output of the bridge rectifier to the input by using probes on the input and output of the bridge rectifier circuit and simulating the circuit in Interactive Mode. The image to the right shows a typical configuration for a bridge rectifier. Many circuits require the use of DC waveforms and the rectifier circuit is an important part of a power supply circuit. This allows us to convert an AC waveform into a DC waveform. Using the forward-biased behavior of diodes, we can force current to flow in the same direction through a load. The bridge rectifier consists of four diodes laid out in a bridge pattern.

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