Half-wave rectifier

As the rectifier voltage, the diode is used to convert alternating voltage (AC) into DC voltage (DC). Rectifier voltage have 2 kinds, namely: 1. Half-wave rectifier (half-wave rectifier) 2. Full wave rectifier (full-wave rectifier) 1. Half-wave rectifier (half-wave rectifier) When used as a half-wave rectifier, diode voltage direction AC

Rectifiers are often called into action to measure signal strength. Rectify an AC signal, pass it through a low-pass filter and the resulting DC level represents some measure of the signal's magnitude. Although the series diode is the classic rectifier, it can't rectify signals smaller that it own forward voltage! But what if your expected amplitude can be as low as 100 mV? Op amps to the rescue! The advantage of op amp circuits lies in their ability to compensate for non-linear devices in the feedback loop. Combining the rectifying action of a diode with the accuracy of an op amp, this circuit creates a precision rectifier.

Half-wave rectifier (half-wave rectifier)
When used as a half-wave rectifier, diode menyearahkan shaped AC voltage into DC voltage sine wave only during the positive cycle of AC voltage only. Meanwhile, during the negative cycle, the diode having panjaran back (reverse bias) so that the load voltage (output) to zero.