The heat sink at those positions is < 50°C.
Using 105°C caps, there is no lifetime issue; not even for industrial products.
Also inside a Class A amp enclosure, the temperature in free space is pretty even.
And I doubt it would be much less than 50°C.
Patrick
Using 105°C caps, there is no lifetime issue; not even for industrial products.
Also inside a Class A amp enclosure, the temperature in free space is pretty even.
And I doubt it would be much less than 50°C.
Patrick
Wow Patrick, just wow!
I'm so glad I was able to join in on this project. Definitely worth the wait! 🙂
I'm so glad I was able to join in on this project. Definitely worth the wait! 🙂
In case you wonder why two separate banks of caps on the left and right.
The two Tx secondaries has a bridge rectifier each, then connected to 2 caps in parallel.
This then goes to either the positive and negative regulator, before going to another 2 caps.
Only then are they connected at the +Vs, -Vs and Gnd connections of the amp PCB.
i.e. there is a single true star Gnd right at the centre of the PCB.
And the different connections around the star Gnd are short as one can imagine for a power amp.
🙂
Patrick
The two Tx secondaries has a bridge rectifier each, then connected to 2 caps in parallel.
This then goes to either the positive and negative regulator, before going to another 2 caps.
Only then are they connected at the +Vs, -Vs and Gnd connections of the amp PCB.
i.e. there is a single true star Gnd right at the centre of the PCB.
And the different connections around the star Gnd are short as one can imagine for a power amp.
🙂
Patrick
Speechless, I was so excited that I even asked my wife whether she could haul this back to me next month while she will be attending her 30th anniversary high school graduation reunion in HK😀 Her response was as cold as the heat sink in the picture 🙁
One off topic question, where did Mark source the transformer plate and screw? The transformers from Richard didn't come with that. I think I will need 2 sets to mount the transformers.
One off topic question, where did Mark source the transformer plate and screw? The transformers from Richard didn't come with that. I think I will need 2 sets to mount the transformers.
All screws, including the ones for the transformers, are supplied.
(In 304 stainless steel, which is non magnetic of course).
Patrick
(In 304 stainless steel, which is non magnetic of course).
Patrick
