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Old 26th April 2013, 06:36 PM   #1
graygem is offline graygem  United States
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Default what is the Output phase

When using a IRS2092 based class d amp in BTL, the 2 inputs are 180 out of phase. If I use 2 IRS2092 amps, using a 90 phase shifter on the inputs, what would the output phase be for the 2 amps? I'm trying to understand what the phase shift does to the output when the inputs are already 180 out of phase.

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Old 28th April 2013, 03:30 PM   #2
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You need a 180 degree phase shift for the signal into the second amplifier.
This gives a voltage swing on full power from b+ to b-.
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