开云体育

I have just gotten my ubxi40 up and running about a 5 days ago. Has the FCI TDA2822 chip. Running the radio on 13.5V. I did place a 10 ohm resistor in series between the output and the headset/speaker jack, so far no issues.

Ron P.

On Mon, Mar 26, 2018 at 2:08 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:

My impression is that the WX failure mode is one of too high a supply voltage
suddenly puncturing a barrier somewhere.??
There may be no noticeable heating prior to the failure.
Perhaps those cut from the periphery of the silicon wafer are more likely to fail.

Raj reports that with very loud audio coming through while running at 12v,
he can short the output of his FCI TDA2822 and have it get hot but not fail.?
There are likely other poor quality clones beyond the WX,
but TDA2822's from reputable vendors?don't seem to fail even when abused a bit.

Jerry

On Mon, Mar 26, 2018 at 12:39 pm, Arvo KD9HLC wrote:

On Mon, Mar 26, 2018 at 12:00 pm, Tim Gorman wrote:

I have run the tda2822wx for 24/7 over the past week. No problem. The
chip never even gets warm on the strongest signals. This is with 12v
applied to the 2822.

Hi, Tim.

This is consistent with what''s been reported, that some WX chips seem fine while a few suffer early failure.