Hi all,
I am wanting to build a small pcb for the Time constants for a BA-6A build. I have a collective cases case which has 8 setting marks for the time knob which I assume are for the 2 on the original BA-6A (the bypass is on a separate switch) and 6 spots derived from the Fairchild 670 time constants. I plan on designing the board in Eagle and using OSHpark to fab. That way I can upload the files for public use and contribute a little here. I am thinking I will build around a Grayhill rotary such as this one: Grayhill rotary and treat the BA-6A as in the attached block diagram where it is a pretty simple no-contact on position 1 for the BA-6A "single" setting and an RC to ground for the "double" setting.
I have two questions i am hoping someone can help with:
1. The Fairchild schematic (attached) doesn't have the time constant options going to ground. How would I treat these for this project? Should they just go to ground like the "double" setting?
2. Would there be better options to use for the time constants in this project other than the Fairchild ones? I've read that some of the release times on those are very long.
I am wanting to build a small pcb for the Time constants for a BA-6A build. I have a collective cases case which has 8 setting marks for the time knob which I assume are for the 2 on the original BA-6A (the bypass is on a separate switch) and 6 spots derived from the Fairchild 670 time constants. I plan on designing the board in Eagle and using OSHpark to fab. That way I can upload the files for public use and contribute a little here. I am thinking I will build around a Grayhill rotary such as this one: Grayhill rotary and treat the BA-6A as in the attached block diagram where it is a pretty simple no-contact on position 1 for the BA-6A "single" setting and an RC to ground for the "double" setting.
I have two questions i am hoping someone can help with:
1. The Fairchild schematic (attached) doesn't have the time constant options going to ground. How would I treat these for this project? Should they just go to ground like the "double" setting?
2. Would there be better options to use for the time constants in this project other than the Fairchild ones? I've read that some of the release times on those are very long.