diyAudio Power Supply Circuit Board v3 illustrated build guide

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#2,229
markmar said:
Sorry to resurrect old thread. I'm planning to build a F6 with the diyAudio Power Supply v3. For the CL-60, and the 3300 pF Safety Capacitor, is there a specific insulator that is suggested for the leads?
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Here is what I usually do. The thermistors can get warm, so you want insulation that won't melt. I use insulation stripped from romex or silicone.

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#2,230
I had a working Pass DIY F4 until I recently pulled a boneheaded move and reattached leads to my PS from one of the bridge rectifiers to the PS PCB backasswards--I forgot that the connections were not mirrored. One channel was connected correctly, the other, not so much. Had a brief pop/spark and all is not well. After reconnecting the wires, I now measure about 10 volts on both channels (18V transformer), no amplifier boards connected. Any idea if I damaged the rectifiers or the power transformer or something else? I see 0.6V forward voltage on the rectifiers, measured out of circuit.

I find it odd that damaging one channel would cause both channels to put out less than half the expected voltage. I'm tempted to just buy another PCB and other components, but I'll wait and see if I can do something less foolish.
 
#2,232
Question about the power supply. I bought a mains transformer with a single primary winding. My question is about the thermistor, do I just need 1 now ? Do I even need the thermistor, I assume it still serves to limit the inrush current ? Does it matter which side of the primary circuit I put it on ?
 
#2,234
Allow me to add the cake under the icing… (the bla):
The thermistor goes between the Power inlet and the transformer, usually it is placed after switch / fuses and primaries.
„yes you need it“ does not explicitly mean the thermistor, but any suitable method of inrush limiter, the ICL just being by far the simplest effective one, with the downside that there’s always something in the circuit…
 
#2,236
>Google PSUD2, download it, and play around with it. It's got a terrible user-interface, but is still wonderfully useful.
>It will tell you, among other things, the voltage across your capacitors, the ripple current they're getting hit with, and the residual ripple your amplifier will >>see.
>You can then experiment with different R values and different C values.
>If you get stuck trying to figure it out, just post here. A lot of us use it.
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Hi,
Jeff mentioned this in this thread. Last year I downloaded Duncans PS simulater and LTSPICE. I attempted to model and simulate the BOSOZ power supply but put it on the back burner after a few months as I seemed to be missing knowledge(mostly) and devices to make much progress. If anyone is kind enough to post the files for the BOSOZ and this power supply(just ordered the pcb's) I would be ethernally grateful. I just couldnt get it going and I have done DIY and long long long time ago EET degree
Thanks!!!
 
#2,240
Im currently ordering parts to complete this power supply for the Aleph Jzm
Im sort of confused on the values of the bleeder resistors....
On the build guide it recommends Vout divided by 10mA...which gives me 2,2kohms. The BPM recocomends minimum resistance of 4.7kohms
Should I just use 4.7kohms as they will disapate less heat??
Also on th CRC, the author states for a class AB amp, He would just not uses rhe resistors on the CRC, but for the Aleph Jzm being class A...I should use them????
Thanks
Tom
 
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