Hi all,
I am a newbie and I try to do a BR100 amplifier. In web there are mostly the PA configuration so I create this from basic.
What would you suggest to improve?
View attachment Schematic_br100PDF_Sheet.pdf
I am a newbie and I try to do a BR100 amplifier. In web there are mostly the PA configuration so I create this from basic.
What would you suggest to improve?
View attachment Schematic_br100PDF_Sheet.pdf
My suggestions are tw😵ne, is to add a resistor pot to adjust the gain of one of the amps, to match the complementary gain, as they are naturally different. Second, to add a second RL net at the bottom amp to equalize the distribution of parasitic capacitances equally at both amplifiers.
> match the complementary gain, as they are naturally different.
An eighth of a dB. Which makes the clipping level a sixteenth of a dB less than "perfect".
If you are within a dB of clipping, you should get a bigger amp.
Yeah, the parasitics differ. However AFAIK the real key of these amplifiers is LAYOUT. A theme which has been discussed extensively here. I'm not sure we need a new thread until we know the existing posts and expert sites have been digested.
An eighth of a dB. Which makes the clipping level a sixteenth of a dB less than "perfect".
If you are within a dB of clipping, you should get a bigger amp.
Yeah, the parasitics differ. However AFAIK the real key of these amplifiers is LAYOUT. A theme which has been discussed extensively here. I'm not sure we need a new thread until we know the existing posts and expert sites have been digested.
Thank you for the answers.
I did some changes. The gain is now 19. I know the LAYOUT is really important I'll work on it later.
View attachment Schematic_br100PDF_Sheet (2).pdf
add a resistor pot to adjust the gain of one of the amps
I will do this.
Is this a diffrent resulting from a design of amplifier? I mean if I create identical board with identical supply etc. will they all have the same identical difference in gain?
I did some changes. The gain is now 19. I know the LAYOUT is really important I'll work on it later.
View attachment Schematic_br100PDF_Sheet (2).pdf
add a resistor pot to adjust the gain of one of the amps
I will do this.
Is this a diffrent resulting from a design of amplifier? I mean if I create identical board with identical supply etc. will they all have the same identical difference in gain?