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Old 15th Oct 2019, 1:55 pm   #23
GMB
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Join Date: Aug 2003
Location: near Reading (and sometimes Torquay)
Posts: 3,101
Default Re: Don't shoot me... but ideas wanted about Bluetooth adaptation of DAC90A

What temperature do you get inside a DAC90?
You might want to check the temperature range that the Bluetooth device can stand.

I would just stick a zener at the bottom of the heater chain and then smooth the resulting asymetric squarewave that results, making sure it was powerful enough to stand the switch-on surge.
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