Sorry for the dumb question and thread resurrection, but I had a quick question about crystal oscillator output waveforms. I played with a whole pile of different web circuits and chips over the past day, and for some reason was never able to get anything resembling a decent square, unless the input signal was square to begin with. I even checked different input voltages with the CD4011, which gave a perfect on or off at its threshold point, with nothing in-between, but with input from a crystal circuit, I get about what you see (those are actually some of the nicer looking ones).
When you guys talk about "square" with some of these oscillator circuits, are you talking real square, like a function generator, or is my output what I should expect? The picture you see is from the OP's circuit in post#8, but like I say, I tried a bunch (oscillators and buffers which were supposed to clean them up). I *think* I had an MC14093B in there at one point (Schmitt trigger NAND gate), but I'm not positive. Frequency was mostly in the 1-20 MHz range. Can't remember if I got any kHz crystals to start.
Oddly, I don't actually need this circuit right now. I was just bothered that I didn't get what I expected.
Much Thanks!
When you guys talk about "square" with some of these oscillator circuits, are you talking real square, like a function generator, or is my output what I should expect? The picture you see is from the OP's circuit in post#8, but like I say, I tried a bunch (oscillators and buffers which were supposed to clean them up). I *think* I had an MC14093B in there at one point (Schmitt trigger NAND gate), but I'm not positive. Frequency was mostly in the 1-20 MHz range. Can't remember if I got any kHz crystals to start.
Oddly, I don't actually need this circuit right now. I was just bothered that I didn't get what I expected.
Much Thanks!