Goodies came in today! Yessss!!!
Starting this beauty during the weekend.
@bk856er, thanks for the bridge package info! Weird layout!
Ciao!
Do
Starting this beauty during the weekend.
@bk856er, thanks for the bridge package info! Weird layout!
Ciao!
Do
Hi AndriyOL,
The PSU modules was part of a GB Prasi (DIYaudio) and I (QuebecDIY) ran a few weeks ago. You can find it on the Group Buy section of this forum
http://www.diyaudio.com/forums/group-buys/301682-crc-power-supply-class-amplifier.html
Unfortunately, on my side I'm out of PCBs.
For the Mirand softstart, you can find it here :
Softstart V1.1 | Mirand Audio - Solidstate designs
It is a very high quality Softstart.
Thanks
Do
Hi Myles,
I did order the SPO from Rudi but since I already have a spare softstart from Mirand then I don't have to spend another 70$ on parts to build the SPO which I may end up assembling anyways... 😀
Last night I mounted all resistors and diodes, tonight I'll continue the assembly of the main amplifier PCBs.
Ciao!
Do
Another small parts glitch on the SPO. The pdf build guide and PCB shown there offers two options for the transformer, just like the one on post#1 here. I ordered the specified Tamura 3FD-324 for 115V primary. The PCB I have does not have holes for the Tamura, only the EI30 type, so guess there was a change along the way and the guide wasn't updated. 115V primary/12V secondary EI30 type transformers don't seem to be available these days. Any suggestions?
BK
BK
I believe this distributor might have something in the Zettler brand
Search results for "zettler magnetics" - Allied Electronics
I didn't check for lead spacing or anything but they seem to have the type of transformers
Do
Search results for "zettler magnetics" - Allied Electronics
I didn't check for lead spacing or anything but they seem to have the type of transformers
Do
Thanks for that!
My bad - EI38 type, which is a bit larger physically than EI30.
Allied has some low VA EI30 types from what I'm seeing. Weird that this type of transformer is getting harder to find. Tamura type is abundant.
BK
My bad - EI38 type, which is a bit larger physically than EI30.
Allied has some low VA EI30 types from what I'm seeing. Weird that this type of transformer is getting harder to find. Tamura type is abundant.
BK
I just realized that we have to match MJE15034 with MJE15035... Do any of the builders here have matched pairs or can match pairs? I could buy a bunch and match them myself but it can get costly buying multiple pairs.
Thanks
Do
Thanks
Do
I did not matched 15034/15035 as it was almost impossible. If I remember well not so much builders matched this position
Sent from my EVA-L09 using Tapatalk
Sent from my EVA-L09 using Tapatalk
ok thanks!
I will still measure the Hfe of the ones I have and just set the closest pairs together.
Do
ok thanks to all for the feedback!
On another note, there is a small PCB trace missing on the shunt PSU for C9, the 2.2uF film capacitor if you're using 5mm lead spacing instead of the 7.5mm. You will need to make a manual solder bridge between the space 5mm and 7.5mm as there's no connection. It's only 2.5mm distance so very easy to solder a bridge.
Just a heads-up
Thanks
Do
On another note, there is a small PCB trace missing on the shunt PSU for C9, the 2.2uF film capacitor if you're using 5mm lead spacing instead of the 7.5mm. You will need to make a manual solder bridge between the space 5mm and 7.5mm as there's no connection. It's only 2.5mm distance so very easy to solder a bridge.
Just a heads-up
Thanks
Do
Here's my build so far!
All resistors on amplifier modules are Takman Metal Film except for two Dale CMF55
Amplificateur FC-100
Ciao!
Do
All resistors on amplifier modules are Takman Metal Film except for two Dale CMF55
Amplificateur FC-100
Ciao!
Do
Hi pinnocchio,
Very good choice in capacitors. These perform very well. You're doing a nice, neat job and I'm sure it will sound great.
-Chris
Very good choice in capacitors. These perform very well. You're doing a nice, neat job and I'm sure it will sound great.
-Chris
Yes, thanks! I really like to use these in those specific areas. I prefer them over the audio capacitors which are usually higher ESR and low ripple.
Do