About Enrico_I

Enrico_I · 2024-11-01

Hello everyone. Regarding an amplifier with two TDA7294 in bridge configuration, looking at the diagram, on IC 1 at pin 3, there is a high pass filter formed by the 0.56uF capacitor C1 and the 22K Ohm resistor. The cutoff frequency is 12,91 Hz. I wou...

Enrico_I · 2024-11-09

The mention of "not feasible" was about the 22uF input capacitor and the related 185000uF and 87000uF capacitors. I then asked if instead of 22uF a 4.7uF was used. I am still waiting for an answer...

Enrico_I · 2024-11-09

Hi Andrew, I simply asked the ST technicians the question: if I raise the input filter capacitor from 0.56uF to 4.7uF for the reasons above, what should be the new value of C bootstrap? I still don't have an answer regarding what formulas should be u...

Enrico_I · 2024-11-09

The speakers are La Scala II made by Klipsch.Are you a musician? Do you know what pedal tones are?THEN we talk about the need to lower the input filter freqs.

Enrico_I · 2024-11-09

2nd copyDear Peter, I do not want to waste your time but back to my question from yesterday, with a 5uF capacitor at the input high pass filter, what are the capacitive values for the bootstrap cap and for the two caps of the power supply? Many tha...

Enrico_I · 2024-11-02

Hello again, it is clear that the switching power supply is not suitable for this amplifier. I have made recently a prototype of a linear power supply that instead of the passive diode bridge, has a LT4320 bridge controller and four power MOSfets. Th...

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TDA7294 Bridge application

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