Opa549

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ctardi

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Joined 2005
I'm just learning about making amplifyers. Here is what I have come up with using information from the datasheets, and bigmike216. The input power will be about 18V. The of each channel will first go thru the DRV134, and also a preamp that has not been decided yet. What all changes will need to be made?
 

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bigmike216

Member
Joined 2004
first off, the voltage will be + and - 18v, before rectification.. ;)

When I have the pcb's made, it'll be easy as pie to assemble it, won't have to worry about how to wire anything :)

do a forum earch about bridging, also search for opa549 and drv134, there's a ton of information.

Talk to me on messenger or something and I'll help you out
 
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paulb

Member
Joined 2001
neutron7 said:
if you must use a decoupling capacitor, use it before the DRV because any difference in capacitance will result in different low frequency response on the 2 sides of the bridge. then you will get asymetric output at those frequencies affected
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Why would the capacitance be any different? If you're referring to the tolerance of the capacitors, it will be a very minor effect on frequency response.
But there should be a capacitor, and resistor to ground, before the DRV134.
 
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