sara2016 v5
I want to relive the post and thank raimond for his scheme and alex for the pcb
clear and beautiful sound
Youtube sound test
I want to relive the post and thank raimond for his scheme and alex for the pcb
clear and beautiful sound
Youtube sound test
hi all
thermal tracking is not enough,
predrivers should leave the main heatsink
or the bias transistor must be darlington
thermal tracking is not enough,
predrivers should leave the main heatsink
or the bias transistor must be darlington
Hi Raimond,
I was very interested in your Sara-2016 amplifier as I see the scheme different from the previous one published here.
I would like to assemble, your great amplifier. Maybe you could add a schematic and a BOM file with details mouser or digikey, because I will not be able to select the details.
I also want to ask:
at what value (about what values) the offset should be adjusted and between what points he was measured.
Advance thanks for the help.
Sorry for my english, goole translate.
I was very interested in your Sara-2016 amplifier as I see the scheme different from the previous one published here.
I would like to assemble, your great amplifier. Maybe you could add a schematic and a BOM file with details mouser or digikey, because I will not be able to select the details.
I also want to ask:
at what value (about what values) the offset should be adjusted and between what points he was measured.
Advance thanks for the help.
Sorry for my english, goole translate.
In the left we have 2x 2n5551 transistors. In the middle, up, we have 1x 2n5551 transistor. In the middle, down, we have 1x 5401 transistor. In the middle-right, we have 6 rectangles. There are emitter power resistors(5W). There are flat power resistors. In the right of the picture, we have 2 x SMD power diode. Finnaly, we have a parallel circuit, LR. Ther is a air-coil with L=1uH-2uH in parallel with a 2w axial 5-10 ohm resistor.
I'll create a BOM file with the components, but there isn't exotic parts. Small resistors are 1% metal. C2,C4,C6,C8 are NPO/COG capacitors at 100v or bigger voltage. C3 is bipolar electrolyte. C19 is NPO/COG at 25v or bigger voltage. C1 colud be any type you wish at any voltage.
I'll be back with more construction details. 🙂
The last PCB
Thank you very much Raimond.
We will wait for the BOM file to respond. I really want to assemble your amplifier. We hope for further help 🙂, because ELFORUM sometimes does not confirm the account, I can only be a guest.
I was still looking at PSU gerber files, missing a big diode and capacitor name on the left side.
I still have a question, I want JLCPCB to order last PCB - PSU and SARA-2016 boards, what PCB thickness should the copper coating be? Will 1.6 or 2 be required?
Thank you very much Raimond.
We will wait for the BOM file to respond. I really want to assemble your amplifier. We hope for further help 🙂, because ELFORUM sometimes does not confirm the account, I can only be a guest.
I was still looking at PSU gerber files, missing a big diode and capacitor name on the left side.
I still have a question, I want JLCPCB to order last PCB - PSU and SARA-2016 boards, what PCB thickness should the copper coating be? Will 1.6 or 2 be required?
What type of parts are indicated by the arrows?
Are there any changes that need to be made?
Thanks...a great job.
Attachments
These are the pre-driver, driver and Vbe-multiplier transistors. Normally, there aren't any changes.
I don't have transistors 2sc3503c, 2sa1381c.
Can I change the pair 2sc3503c 2sa1381c to the pair 2sa1837 2sc4793 ?
Can I change the pair 2sc3503c 2sa1381c to the pair 2sa1837 2sc4793 ?
Last edited:
Yes and no.
Different pinout but if they aren’t touching the heatsink, turn the 4793/1837 backwards and the pins will align.
3503/1381 are ECB
4783/1837 are BCE
Ksa1381 and ksc3503 are the same transistor with 2sa1381 and 2sc3503 (plastic isolated capsule) and you can finde them at mouser.