Continued this morning with the 74AC240. I am skipping input 0 (as it seems to be shorted), so have output 1 going into all the other inputs, and have all those outputs connected together and going through my low pass filter into a dummy load
Am measuring 32.4 V pp, which should be somewhere around 250mw. Which seems about right. Some people claim to get half a watt out, but that is driving the chip with higher voltage, and I don't want to mess with that right now.
I am noticing that the voltage of the signal out seems to jump up and down a bit. Not sure if that is due to the stray wires of my test setup, the fact I'm getting my power from the Arduio's 5v pin at the moment, or something else. But will work for the moment.
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