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Entry  Thu Apr 28 22:38:38 2011, Aidan, Update, Green Locking, Electronics schematic for vertex beatbox Canvas_1.pngCanvas_2.png
    Reply  Sat Apr 30 05:14:33 2011, Koji, Update, Green Locking, Electronics schematic for vertex beatbox freq_divider.png
Message ID: 4593     Entry time: Sat Apr 30 05:14:33 2011     In reply to: 4584
Author: Koji 
Type: Update 
Category: Green Locking 
Subject: Electronics schematic for vertex beatbox 

- AC coupling for the comparator circuit of the green locking

In order to relieve the power consumption of the RF buffer, ac coupling circuits have been added.

The ac coupling before the buffer amp helps to relieve the power consumption in the chip.
But because of the distortion of the signal (and the limitation of the bandwidth), the output still has some DC (~0.6V).
Therefore, the output is also AC coupled.

Note that the BW pin of BUF634P should be directly connected to -15V in order to keep the bandwidth of the buffer.

The drawings are also uploaded on the green electronics wiki

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