Re: TDA2822 ill treatment test!


No, the chip on short did not draw a large current.


At 01-03-2018, you wrote:
I suspect the 2A limit on his power supply saved the chip!

Ron W7HD

On 03/01/2018 10:00 AM, Joe Puma wrote:
Thanks for taking one for the team Raj. ðŸ‘ðŸ¼ðŸ‘ðŸ¼ðŸ‘ðŸ¼
On Mar 1, 2018, at 7:04 AM, Raj vu2zap <@Raj> wrote:

Having used TDA2822 for decades and never had a failure of any kind even with the chip running very hot,
I got this urge to short my uBitx audio output and see it the chip blows.

Power supply 13.6V
Current limit 2A

Touching the volume control leads produces a loud 50Hz hum. At this volume I directly shorted the wires
at the EP jack. The chip got mildly warm thats it.

No smoke or explosions ! I think that some may have got bad/defective/BY chips..


Raj, vu2zap
Bengaluru, South India.

W7HD - NAQCC#7587 OMISS#9898 KX3#6966 LinuxUser#415320

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