Hello again,
Well, can you report back what frequency range you are actually getting right now, like min before loss of lock, and max before loss of lock?
When i said 'digital logic gates' i did not mean to use gates alone. What i meant was to use 4 chips of the 4046 type and use four ranges (or possibly less but four should work for sure). So the implementation for a 1Hz to 1000Hz would go as follows (just to show how this 1000:1 range might be done):
4046 #1 tuned from 1Hz to 6Hz (that's 6:1),
4046 #2 tuned from 6Hz to 36Hz (that's also 6:1)
4046 #3 tuned from 36Hz to 216Hz (that's also 6:1)
4046 #4 tuned from 216Hz to 1080Hz (that's 5:1)
Then the digital logic gates are connected so that we can select which output we want to use. We would of course then have the extra added complexity of deciding how we want to switch ranges. We might want to use a circuit to do this automatically.
That's just a quick example, but we may actually be going from 1kHz to 1000kHz.
So you have to think about this a little. This may be a bit more than you want to go through for this project and instead find another way of doing this. There have been other suggestions by others in this thread you may wish to consider.
Another little question that comes up is what resolution you need. In other words, if you change from 1Hz to 1.001Hz do you need the output to go from say 1000Hz to 1001Hz (for example) or can you live with just steps in the frequency, like say 5Hz per step?
Did you mention yet what application this will be used for in the end?
Well, can you report back what frequency range you are actually getting right now, like min before loss of lock, and max before loss of lock?
When i said 'digital logic gates' i did not mean to use gates alone. What i meant was to use 4 chips of the 4046 type and use four ranges (or possibly less but four should work for sure). So the implementation for a 1Hz to 1000Hz would go as follows (just to show how this 1000:1 range might be done):
4046 #1 tuned from 1Hz to 6Hz (that's 6:1),
4046 #2 tuned from 6Hz to 36Hz (that's also 6:1)
4046 #3 tuned from 36Hz to 216Hz (that's also 6:1)
4046 #4 tuned from 216Hz to 1080Hz (that's 5:1)
Then the digital logic gates are connected so that we can select which output we want to use. We would of course then have the extra added complexity of deciding how we want to switch ranges. We might want to use a circuit to do this automatically.
That's just a quick example, but we may actually be going from 1kHz to 1000kHz.
So you have to think about this a little. This may be a bit more than you want to go through for this project and instead find another way of doing this. There have been other suggestions by others in this thread you may wish to consider.
Another little question that comes up is what resolution you need. In other words, if you change from 1Hz to 1.001Hz do you need the output to go from say 1000Hz to 1001Hz (for example) or can you live with just steps in the frequency, like say 5Hz per step?
Did you mention yet what application this will be used for in the end?