Clippers AND Clampers Zener diode application
Clippers AND Clampers .ppt (Size: 1.76 MB / Downloads: 87)
Clippers or diode limiting is a diode network that have the ability to “clip” off a portion on the i/p signal without distorting the remaining part of the alternating waveform.
Clippers are used to eliminate amplitude noise or to fabricate new waveforms from an existing signal.
2 general of clippers:
a) Series clippers
b) Parallel clippers
The clamping network is to “clamp” a signal to a different dc level. Also known as dc restorers. The clamping cct is often used in TV receivers as a dc restorer.
The network consists of:
c) Resistive element
d) Independent dc supply (option)
The magnitude of R and C must be chosen such that the time constant
= RC is large enough to ensure that the voltage across the capacitor does not discharge significantly during the interval the diode is nonconducting.
Our analysis basis that all capacitor is fully charge and discharge in 5 time constant.
Practical Applications of Diode Circuits
Conversions of AC to DC for DC operated circuits
Battery Charging Circuits
Simple Diode Circuits
Protective Circuits against Overcurrent
Polarity Reversal Currents caused by an inductive kick in a relay circuit
Setting Reference Voltages