ก็อปมาแปะ มีคนในเว็บนอกเค้าคุยเรื่อง full wave แบบใช้ center tab กับใช้ bridge
![[chick-confuse]](http://www.diyaudiovillage.net/Smileys/Shiny_Smiley_Icons/chick-confuse.gif)
Advantages of Full wave rectifier
• Rectifier efficiency is 81.2%.
• Ripple frequency is two times the input frequency.
• Ripple factor of full wave is 0.48.
Disadvantages of Full wave Rectifier
• It is difficult to locate the centre tap on the secondary winding.
• The DC output is small as each diode utilizes only one half of the transformer's secondary Voltages.
• The diodes used have high peak inverse voltage.
BRIDGE RECTIFIERS
It contains four diodes D1, D2, D3 and D4 connected to form bridge . The AC supply to be rectified is applied to the diagonally opposite ends of the bridge through the transformer. Between other two ends of the bridge, the load resistance RL is connected.
Advantages of Bridge Rectifiers
• The need for center tapped transformer is eliminated.
• The output is twice that of the center-tap circuit for the same secondary voltage.
• The PIV is one half that of the center tap circuit.
Disadvantages of Bridge Rectifiers
• The only Disadvantage of using Bridge rectifiers is that it requires four Diodes
