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When using a rectifier for demodulation the capacitor and load resistance must be carefully matched: too low a capacitance makes the high frequency carrier pass to the output, and too high makes the capacitor just charge and stay charged.
This is an accepted version of this page This is the latest accepted revision, reviewed on 8 October 2024. Circuit arrangement of four diodes Diode bridge Diode bridge in various packages Type Semiconductor Inventor Karol Pollak in 1895 Electronic symbol 2 alternating-current (AC) inputs converted into 2 direct-current (DC) outputs A hand-made diode bridge. The silver band on the diodes ...
Whereas normal semiconductor diodes have a roughly fixed voltage drop of around 0.5 to 1 volts, active rectifiers behave as resistances, and can have arbitrarily low voltage drop. Historically, vibrator -driven switches or motor-driven commutators have also been used for mechanical rectifiers and synchronous rectification.
[10] [12] Schottky rectifiers are available in numerous surface-mount package styles. [13] [14] Small-signal Schottky diodes such as the 1N5711, [7] 1N6263, [15] 1SS106, [16] 1SS108, [17] and the BAT41–43, 45–49 series [18] are widely used in high-frequency applications as detectors, mixers and nonlinear elements, and have superseded ...
The rectifier produces an unregulated DC voltage which is then sent to a large filter capacitor. The current drawn from the mains supply by this rectifier circuit occurs in short pulses around the AC voltage peaks. These pulses have significant high frequency energy which reduces the power factor.
The Vienna Rectifier is useful wherever six-switch converters are used for achieving sinusoidal mains current and controlled output voltage, when no energy feedback from the load into the mains is available. In practice, use of the Vienna Rectifier is advantageous when space is at a sufficient premium to justify the additional hardware cost.
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