hwarentals.blogg.se - Tda7293 parallel circuit layout

The slave power stages are driven by the master device and work in parallel together whileĬlass AB amplifier in Hi-Fi field applications, such as home stereo, self powered loudspeakers and Topclass TV.

In this type of application, one device acts as a master and the others as slaves.

The modular application allows very high power to be delivered to very low-impedance loads.

The modular application is where several devices operate in parallel.

Inverting amps have a different gain factor than a noninverting amp with the same values of components ,so I am a not a big fan of mix/match the two in such a circuit.TDA7293 in parallel power audio amplifier Where as a parallel amp the to signals are added in phaze and the resultant signal is an average of the two ,should one be slightly lower than the other, not causing any added distortions. This is also one method of how THD analyzers work as well. Not that it won't work but any differences may cause some added distortions in the combined output which may be the reason why some say that their bridged amp doesn't sound as good.īecause in a bridged amp the differences are subtracted to combine the final signal because the two are 180 degrees out of phaze,So any slightest difference in signal level or added propagation delay between the two can add some bit of distortions.

When you are making a balanced circuit such as a BTL configuration you must take all measures to assure that the gains on both sides are exactly the same. I was building I voltage divider circuit one day and all I had was some 5% and 10% resistors and I found that many were much more out of spec than what they were rated for.

I would suggest 1% but if you don't have any then it is adviseble to hand match them. In circuits as such of these resistor tolerance is important especialy in the feedback loop just as in the feed back loops of the BPA-200.