Of coarse. Wouldn't be good for the tweeters. I didn't mean listening impressions but impressions after using it. Still haven't had time unfortunately.
This looked so easy I just had to try it on a solderless breadboard with a SN74AHC14N, using 1kOhm and 150nF to set the frequency. I used local lm317 and lm337 regulators to produce ~+/- 2.5V (330Ohm resistors all-around) from +/- 15. The top blue trace is the output of the inverter itself measured on a 200 MHz scope (but with the normal 6" ground lead, wires everywhere on the breadboard, etc). As others noted it can ring a lot (either in reality or in the measurement) if you aren't careful, which I wasn't. I then pushed the output through a simple first-order low-pass filter (1kOhm, 220pF) and into a TL072 voltage-follower to slow it down a bit; the red trace is the output of the TL072. The output of the op amp does look more usable - closer to what you would get out of a 1 MHz function generator, although the rising and falling edges aren't symmetric. I wonder if other opamps have better behavior when run this way? In any case I suspect it would need to be soldered-up in order to really understand how well it can work.
Here is a zoom-in of the rising edge with the scope in full-bandwidth mode:
and here with the scope's 20 MHz bandwidth limit engaged
Usability of course depends on what you want to measure, but it was certainly fun to play with.
Jason
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So I ended up getting the signal generator that I ordered quite a while ago. The unit I received had an issue with the main board. They sent out another and I replaced it. I finally got around to using it and It works great!
So I am happy to finally have a nice clear square wave to check for oscillations. Thank you for the recommendations guys.
So I am happy to finally have a nice clear square wave to check for oscillations. Thank you for the recommendations guys.