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Old 29th May 2012, 02:48 PM   #31
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Join Date: May 2011
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Originally Posted by noSmoking View Post
A balanced B1 is in the works
Well, I just gave you a schematic for one. You're free to use it if you want to. There are better ways to do this, but if you are attached to the B1 concept, that's fine.
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Old 29th May 2012, 03:35 PM   #32
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Originally Posted by dirkwright View Post
Did you consider using the B1 with bipolar supplies and in bridge mode? It would have a balanced output as well. The input transformer may not be required if you have a balanced source. Output here is 970mV into 10k. Bandwidth is very nice with no weird things. The advantage of using a bipolar supply is obviously that no coupling cap is required.
Of course, with this arrangement, neither output can be grounded in the attached equipment, meaning that anything that is connected to this has to have balanced inputs with DC blocking. It will not work with single ended equipment unless you use something like a transformer to convert it.
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Old 28th April 2017, 11:44 AM   #33
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If doing a linear PSU for a balanced preamp, would there be benefit in doing a separate winding, diodes, and regs to each board (crosstalk or other)? Or is that a waste of time, and I should just take the DC output of a single rail and split it to the two boards? Or is there benefit but the main issue then getting matched input to each board, even with LM317 implementation?
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