I found this schemmy of a Ring Oscilliator, and I was wondering if it was possible to replace the 2N7000's with a 2N2907 or a 2N2222. I know this is a useful circuit, and I would like to build it, but could I replace them? Thanks.
I did not get the box into the mail on new years eve. I just tossed an 2n7000 into the bag along with the parts for the new target board. It has cardboard on the leads, the regulator does not.
First I was not paying attention to what you were building. I only sent 1 transitor which would make building a ring osc difficult. You can use it on the junebug.
The computer is only 3 days away, unless that has changed. It would be easy to create a similar device in software and watch the bits change on the port.
Actualy you already know how to do that (at least fake it) if you think about it.
If you are looking for somthing to do I can send you some C related material to study.
Depending on the frequency you want you can use a single inverter, an R and a C to make a relaxation oscillator.
You can also use an od number of inverters to make a ring oscillator whose frequency will be a sensitive function of Vcc, temperature, and the propagation delay of the particular gate you select.
Combining these two concepts you should be able to amuse yourself for a very long time.
Depending on the frequency you want you can use a single inverter, an R and a C to make a relaxation oscillator.
You can also use an od number of inverters to make a ring oscillator whose frequency will be a sensitive function of Vcc, temperature, and the propagation delay of the particular gate you select.
Combining these two concepts you should be able to amuse yourself for a very long time.
I have found that the 2N7000 and its p-channel complement the ZVP2106A to be as useful as the old BJT 2N2222 and 2N2907 parts. I am sure that the 2N7000 will work as I just bread boarded a three stage loop using a 10k ohm drain resistor and it works fine. The frequency tracks the supply voltage nicely from 3 to 24 volts.