BRIDGE MODULE Pre-Amplifier
Wrote by Zang 2008.3.29
The bridge module is a update version of the BALANCE LINE DRIVER.the module based on 4 pieces of single opamp,the module can work as a two channel unbalance signal to balance signal converter or a standard stereo pre amp.
the pcb design goal is easy to install into the existing audio gear.
-compact design with smt resistors and capacitors,
-two jumper on the pcb for function switch(standard unbalance stereo or two channel bridge),
-including fixed voltage regulated chips.the module need +/-18VDC to +/-30VDC to run,
-4 X 11 via pads on the pcb for circuit bend.
PCB layout silk layer view
PCB connections for unbalanced stereo system
PCB connections for two channel bridge
Assembled module closeup view
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