Lookin good! Make sure there is zero ohms across those pots (except the middle one). Several folks have blown up boards lately.
Tomcat, if that is the Deluxe chassis, the PSU board can be mounted on the inside of the front panel using the tapped holes that are already there. The toroid may need to be shifted a little to the rear of the chassis to make room.
Hi guys.
I bought a black face plate so it's not drilled and tapped like Diyaudio silver face plate.
I've drilled the pilot holes on the reverse and tomorrow I'll tap them M3/.5, to suit my standoffs.
I've rewired the IEC to save a little space and moved the tx towards the rear of the chassis.
The tx is a toroidy supreme audio 400va with 18v X 2 secondaries.
I assume the blue and black leads are the secondaries. And the white leads are 240v in to the tx.
Thanks for the help.
I bought a black face plate so it's not drilled and tapped like Diyaudio silver face plate.
I've drilled the pilot holes on the reverse and tomorrow I'll tap them M3/.5, to suit my standoffs.
I've rewired the IEC to save a little space and moved the tx towards the rear of the chassis.
The tx is a toroidy supreme audio 400va with 18v X 2 secondaries.
I assume the blue and black leads are the secondaries. And the white leads are 240v in to the tx.
Thanks for the help.
When tapping threads into blind holes, it will be convenient to have a bottom tap in addition to the normal plug tap. I make my own bottom taps by grinding off the tapered end of a plug tap.
Tomcat,
I was going to mount my power supply board on the front too.. but 6L6 recommended against it due to potential noise/hum issues.
https://www.diyaudio.com/forums/pass-labs/341140-f5-v3-36.html#post6036762
and some more about hum here: F5 power amplifier
Although maybe with that fancy transformer it will be okay?
I was going to mount my power supply board on the front too.. but 6L6 recommended against it due to potential noise/hum issues.
https://www.diyaudio.com/forums/pass-labs/341140-f5-v3-36.html#post6036762
and some more about hum here: F5 power amplifier
Although maybe with that fancy transformer it will be okay?
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Good point. Although I'm now kinda committed to this path now. So I think I will stay on it... We'll see how it goes.
Well I put power to the PSU today. Nothing fizzed, popped, smoked or banged.
Output is 24.6 ish so I'm pretty happy. For now.
Output is 24.6 ish so I'm pretty happy. For now.
Hmmmm spoke too soon. The readings were between + and - not between + and ground or - and ground.
Between + or - and ground I get 12.3.
What does this mean???
Between + or - and ground I get 12.3.
What does this mean???
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That green resistor is your bleeder resistor right? What does it say on the side? What's it's value?
Take what I say with a grain of salt.. I've only built one of these and I'm not an expert..
The BOM for the power supply says at least a 4.7k resistor minimum... Could it be bleeding faster than it can supply? But my gut tells me that isn't the problem.
How did you identify which secondary pairs were related? I see you taped them. I used a multimeter resistance setting..
The BOM for the power supply says at least a 4.7k resistor minimum... Could it be bleeding faster than it can supply? But my gut tells me that isn't the problem.
How did you identify which secondary pairs were related? I see you taped them. I used a multimeter resistance setting..
