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bridging adaptor for single supply amp
bridging adaptor for single supply amp
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Old 26th November 2013, 06:58 PM   #1
rrbadrike is offline rrbadrike  India
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Default bridging adaptor for single supply amp

can i use bridge adaptor for single supply audio amp with capacitor coupled at output? if anyone have schematic show how to use
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Old 26th November 2013, 07:14 PM   #2
Mooly is offline Mooly  United Kingdom
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bridging adaptor for single supply amp
A capacitor coupled amp throws up some "issues".

1. If the amps are DC stable over time (no drift of the mid point voltage and they both have identical mid point voltages) then there is the possibility of connecting the speaker directly between the two amps. However that is unlikely.

2. If option 1 is not possible then the speaker has to be connected with a single non polarised cap between the two amps. The cap would be two large identical electroylitics connected plus to plus or minus to minus with 10k 1watt resistors across each to equalise voltage.

For a simple workable bridge driver that developed to something slightly more complex to address phase and time errors see,
newbee phase splitter question

newbee phase splitter question

newbee phase splitter question
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