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Vand placute amplificator tda7293/7294
Vand placute amplificator tda7293/7294
Vand placute amplificator tda7293/7294
Vand placute amplificator tda7293/7294
Vand placute amplificator tda7293/7294
Postat Azi la 18:38

Vand placute amplificator tda7293/7294

10 lei

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Placutele sunt noi, toate piesele sunt trecute pe placa.NU trimit sub 30lei in tara.Am mai multe buc.
Pret fix 10 lei buc!
Trimit doar prin curier, nu am timp sa ajung la posta! E 22-23 lei prin OLX.

A quick note on C9.

C9 must be configure correctly for the IC you are using.
If a TDA7294 then C9 must be connected ONLY from pin 14 to pin 6 of the IC.

If you use a TDA7293 the C9 (the bootstrap capacitor) the chip manufacturer, ST or STMicroelectronics , says this —

“THE BOOTSTRAP CAPACITOR
For compatibility purpose with the previous devices of the family, the boostrap capacitor can be connected both between the bootstrap pin (6) and the output pin (14) or between the boostrap pin (6) and the bootstrap loader pin (12).
When the bootcap is connected between pin 6 and 14, the maximum supply voltage in presence of output signal is limited to 100V, due the bootstrap capacitor overvoltage.
When the bootcap is connected between pins 6 and 12 the maximum supply voltage extend to the full voltage that the technology can stand: 120V.
This is accomplished by the clamp introduced at the bootstrap loader pin (12): this pin follows the output voltage up to 100V and remains clamped at 100V for higher output voltages. This feature lets the output voltage swing up to a gate-source voltage from the positive supply (VS -3 to 6V).

So you have the option, EITHER pin 14, or pin 12, BUT NOT BOTH!
IMO, the drawing is correct in trying to show both options, however the write-up fails to indicate well that it is an option depending on which IC you are using.
I hope this helps.

C1, 22µF/50V – Electrolytic capacitor
C2 1µF ~ 2.2µF 63V – Capacitor Polyester
C3, C4 10µF/35V – Electrolytic capacitor
C5, C6 100µF/50V – Capacitor Polyester
C7, C8 100nF/100V – Ceramic capacitor or polyester.
C9 22µF/50V – Capacitor Polyester (See text)
C10 100nF/63V – Ceramic capacitor or polyester.
ID: 222787027

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