This thread is for discussions about the new Speaker Turn-On Delay and DC Protector boards (V3). This is an updated version of the V2 boards, primarily to make them compatible with the 10x10 grid mounting pattern we've now standardized on so they can be easily mounted to Deluxe chassis baseplate, riser panels, front panels and/or heatsinks. Refer to the V2 discussion thread for additional information.
For more information on this product, please see the product page.
Change History
Information
For more information on this product, please see the product page.
Change History
- 2.0 First Production Release
- 2.0.1 Added Board Dimensions
- 3.0 New Layout
- Double sided board
- Added Keystone connectors as option
- Conforms to 10mm mounting grid
- For future changes
- Add polarity markers for electrolytic capacitors
Information
- Product Page
- BOM - Attached below (Now updated to V3.0.2b) -- 3-paged BOM
- Schematic - Coming soon
- Dimensions - 100mm x 50mm
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Gibbi
Relay spec says 5A @125VAC into a resistive load
However it also says 10A if the Normally Closed connection is not used (it isn't used on the Delay board).
so.....
625W theoretically but I won't be the brave soul who tries out the limit.
🙂
Spec of relay is here
http://www.components.omron.com/com...026C97E862573930070AC4F/$file/G5LA_E_0911.pdf
Relay spec says 5A @125VAC into a resistive load
However it also says 10A if the Normally Closed connection is not used (it isn't used on the Delay board).
so.....
625W theoretically but I won't be the brave soul who tries out the limit.
🙂
Spec of relay is here
http://www.components.omron.com/com...026C97E862573930070AC4F/$file/G5LA_E_0911.pdf
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Is there a link anywhere to see the schematic for these to check if they are suitable for my application ?
This is the current schematic;
It will be on the site shortly
It pretty benign and can be used in applications other than the F5 and F5T.
U1.1 is ground and U1.2 is + supply
It will be on the site shortly
An externally hosted image should be here but it was not working when we last tested it.
It pretty benign and can be used in applications other than the F5 and F5T.
U1.1 is ground and U1.2 is + supply
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Toecutter, what is the issue with this circuit and the F5 and F5T? Is it the impedance of the sense circuit relative to the low impedance feedback circuit of the F5? If so, would it be an issue with other CFB amps as well?
Bob,
I think you misunderstood what I said.
I don't believe there is any issue with this board and the F5 & F5T.
What I was saying is that I believe this would be suitable for many other amplifiers as well.
I think you misunderstood what I said.
I don't believe there is any issue with this board and the F5 & F5T.
What I was saying is that I believe this would be suitable for many other amplifiers as well.
Built mine out today and both LEDs light up continuously from the start, immediately engaging the relays.
Everything look right? I had my LEDs in the opposite from what I expected, I think I got everything else correct.
Everything look right? I had my LEDs in the opposite from what I expected, I think I got everything else correct.
So the 3.0 BOM has Q1,Q2,Q3,Q5,Q6 as 512-KSC945CGBU which are ECB according to http://www.fairchildsemi.com/ds/KS/KSC945.pdf but the board is made for EBC.
It mentions -C is ECB.
• Suffix “-C” means Center Collector (1. Emitter 2. Collector 3. Base)
Also, I pulled mine off and twisted the pins and my board is working now.
• Suffix “-C” means Center Collector (1. Emitter 2. Collector 3. Base)
Also, I pulled mine off and twisted the pins and my board is working now.
Glad you're up and running. Missed that - Guess that was a typo in the BOM. The Honey Badger uses the C versions, too.
From what I can tell, the 2.0 boards required the C version so its probably just carried over. I'm glad I was able to figure it out, hopefully there hasn't been too many people ordering off the 3.0 bom just yet.
Some assembly photos -
Diodes first
Then resistors.
This end of the PCB has shorter things that the other, so I suggest this side to stuff first,
Then add your connections here. You may use the male spades, screw terminals, or bare wire, I used two types here for illustration. The Keystone screw terminals are really nice.
Relays
And finally the tall capacitors in the center.
PLEASE READ -
The current BOM asks for the -C suffix transistors, and I blindly ordered the mouser part number from it. So my transistors need to dance. Thanks bigkraig for spotting this! (Of course, i determined it after they were stuffed, so a bunch of things got un-soldered... 🙂
Hopefully the BOM can be updated with little fuss.
Shimmy shimmy shake shake
And waltz!
That's as far as I got, testing and installation to come.
Diodes first
Then resistors.
This end of the PCB has shorter things that the other, so I suggest this side to stuff first,
Then add your connections here. You may use the male spades, screw terminals, or bare wire, I used two types here for illustration. The Keystone screw terminals are really nice.
Relays
And finally the tall capacitors in the center.
PLEASE READ -
The current BOM asks for the -C suffix transistors, and I blindly ordered the mouser part number from it. So my transistors need to dance. Thanks bigkraig for spotting this! (Of course, i determined it after they were stuffed, so a bunch of things got un-soldered... 🙂
Hopefully the BOM can be updated with little fuss.
Shimmy shimmy shake shake
And waltz!
That's as far as I got, testing and installation to come.
Approximately how much delay is there initially before the relays turn on using the 12V power supply version? What controls this delay?
I was wondering the same thing, along with how much offset triggers the disengage mode. Are these parameters customizable?
My apologies regarding the BOM gents.
The datasheet attached to the currently specified part shows the pin outs as per the board and not as centre collector.
If somebody could confirm that Mouser 512-KSC945YTA is the correct part I will update the BOM.
Regards
Andy
The datasheet attached to the currently specified part shows the pin outs as per the board and not as centre collector.
If somebody could confirm that Mouser 512-KSC945YTA is the correct part I will update the BOM.
Regards
Andy
Oh......
Just read the notes on the datasheet where it does indeed say the C suffix is centre collector.
My bad.
Updating BOM now.
Just read the notes on the datasheet where it does indeed say the C suffix is centre collector.
My bad.
Updating BOM now.
I would be nice if their datasheet showed two pinout images showing both versions. It is quite misleading the way it is... Poorly represented and so easy to miss. I mean at least put an asterisk next to the pinout image or something.
I bought the GTA versions. I hope they will work!