I owe everyone who helped me with this thread an apology...
http://forum.allaboutcircuits.com/showthread.php?t=10936
I dropped the ball. I did do some preliminary measurements with my oscope, but a fellow Mason and DeMolay advisor who does DJ duty with a really nice, expensive, barely portable setup heard I had a oscope and asked if he could borrow it, and of course I said yes. This is what is driving my PC Oscope project on another thread.
Anyhow, I had a brainstorm. Somewhere I've seen this circuit...
Don't remember where. I believe it would use something very close to the standard 555 formula to calculate the frequency.
\(\huge F = \) \(\frac{.7}{RC}\)
Anyhow, using the concept from the previous post, I expanded the idea to this...
And for something that might be usable for a home brewed test equipment, I took it one step further...
I've said this before, but the sine wave isn't pure. You couldn't tell this by looking at it though. I ran a computer program to show the two overlapping each other...
The green line is a reference sine wave, while the blue is the expected output of the above circuit.
It's going to be a while before I can look at it, but this might have possiblities. What do you think?
http://forum.allaboutcircuits.com/showthread.php?t=10936
I dropped the ball. I did do some preliminary measurements with my oscope, but a fellow Mason and DeMolay advisor who does DJ duty with a really nice, expensive, barely portable setup heard I had a oscope and asked if he could borrow it, and of course I said yes. This is what is driving my PC Oscope project on another thread.
Anyhow, I had a brainstorm. Somewhere I've seen this circuit...
Don't remember where. I believe it would use something very close to the standard 555 formula to calculate the frequency.
\(\huge F = \) \(\frac{.7}{RC}\)
Anyhow, using the concept from the previous post, I expanded the idea to this...
And for something that might be usable for a home brewed test equipment, I took it one step further...
I've said this before, but the sine wave isn't pure. You couldn't tell this by looking at it though. I ran a computer program to show the two overlapping each other...
The green line is a reference sine wave, while the blue is the expected output of the above circuit.
It's going to be a while before I can look at it, but this might have possiblities. What do you think?
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