Overestimating fool I am!
I thought I would have the boards done by the end of April, but boy was I wrong! I may need until June to have the BPA300 v3.0 completed. It's an extensive project that will have to wait a little longer to come together, but I will be making kits if it works perfectly!
-Vince
I thought I would have the boards done by the end of April, but boy was I wrong! I may need until June to have the BPA300 v3.0 completed. It's an extensive project that will have to wait a little longer to come together, but I will be making kits if it works perfectly!
-Vince
Re: Overestimating fool I am!
Looking forward to trying them
DJ Exprice said:I thought I would have the boards done by the end of April, but boy was I wrong! I may need until June to have the BPA300 v3.0 completed. It's an extensive project that will have to wait a little longer to come together, but I will be making kits if it works perfectly!
-Vince
Looking forward to trying them
Here's my new DRV134 Circuit - DRV135 compatible too!
That is the highest resolution right there.
An externally hosted image should be here but it was not working when we last tested it.
That is the highest resolution right there.
What are those diodes doing on the output of the positive regulator? The polarity of C5 also needs to be inverted. You have pin 5 (V-) of the DRV chip connected to the regulator ground pins which aren't connected to ground. I'm not sure what would happen if you even built that thing and powered it up!
Make the schematic more readable by making it flow left to right instead of down to up. The schematic here is a good example. Check out datasheets for the 7815/7915 regulators to see how to properly implement them. Don't even start on the layout until you have the schematic correct...
Make the schematic more readable by making it flow left to right instead of down to up. The schematic here is a good example. Check out datasheets for the 7815/7915 regulators to see how to properly implement them. Don't even start on the layout until you have the schematic correct...
Is this any better?
Highest Res once again.
An externally hosted image should be here but it was not working when we last tested it.
Highest Res once again.
I think this is a lot better.
Highest Res once again.
I have no idea why that was the way it was - all messed-up-like-so. All better now.
An externally hosted image should be here but it was not working when we last tested it.
Highest Res once again.
I have no idea why that was the way it was - all messed-up-like-so. All better now.
)
In the latest picture the regulator and DRV grounds are still not connected to the power supply ground.
The anti-reverse diodes are usually connected between the power supply ground and earth ground not between the supply ground and audio ground. Just forget about the diodes for now.
Have a look at the attached schematic. Try to make yours look like that so it is much easier to read. The more readable it is the less likely you are to make connection errors.
The anti-reverse diodes are usually connected between the power supply ground and earth ground not between the supply ground and audio ground. Just forget about the diodes for now.
Have a look at the attached schematic. Try to make yours look like that so it is much easier to read. The more readable it is the less likely you are to make connection errors.
Attachments
http://www.sound.westhost.com/project04.htm
Give that a read through. It won't hurt to use the anti-parallel diodes but it really isn't needed for the low power DRV supply. That's why I said just forget about them for now.
Give that a read through. It won't hurt to use the anti-parallel diodes but it really isn't needed for the low power DRV supply. That's why I said just forget about them for now.
Update of the schematics that are coming along:
An externally hosted image should be here but it was not working when we last tested it.
Click here for hi-res image.
About 60v from V+ to V-.
That would be giving each LM7*15 30v input…hot damn! (No pun intended…well, maybe, but that's beside the point).
Those puppies will be gettin' HOT!
That's definitely going to need heat-sink-age for the regulators - Or I put some LM7*24s in front of them to keep a little more sanity; what does everyone think? Please give me your opinion - I AM going to look at the datasheets for the LM7*xx series soon. I may be back in a few hours if not tomorrow.
That would be giving each LM7*15 30v input…hot damn! (No pun intended…well, maybe, but that's beside the point).
Those puppies will be gettin' HOT!
That's definitely going to need heat-sink-age for the regulators
- Or I put some LM7*24s in front of them to keep a little more sanity; what does everyone think? Please give me your opinion - I AM going to look at the datasheets for the LM7*xx series soon. I may be back in a few hours if not tomorrow.- Status
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