Using the new 2012 Shigaclone to create a killer high end transport

Jump to Latest
#81
Tibi, not sure if I can track down an ESR meter. With regard to your method, however, shouldn't the use of the resistors not be needed if I have a constant current power supply? That's really all the resistors are doing in this case - insuring a small current to the caps during the forming process.
 
#82
tonyptony said:
Tibi, not sure if I can track down an ESR meter. With regard to your method, however, shouldn't the use of the resistors not be needed if I have a constant current power supply? That's really all the resistors are doing in this case - insuring a small current to the caps during the forming process.
Click to expand...

In fact resistor will act like a variable ccs. While the voltage is dropping the current will drop as well protecting the cap from overheating.

Regards,
Tibi
 
#83
Tibi
Can you please clarify how to split and where to power the various sections, motor 8.3v, digital 5v, and TentLabs oscillator If using "bobken" regulator for the digital section and a "pinkfish flea for the TentLabs oscillator?
 
#86
Well, we already done that. 😀

Regards,
Tibi
 

Attachments

  • 20130213_203834.jpg
    20130213_203834.jpg
    664 KB · Views: 434
#87
tvicol said:
In fact resistor will act like a variable ccs. While the voltage is dropping the current will drop as well protecting the cap from overheating.

Regards,
Tibi
Click to expand...

I have the power supply and will be doing the cap forming maybe tonight or tomorrow. The HP supply is a variable DC supply that can be set for constant voltage / constant current, but I'm not sure that's what I want to do.

I was thinking of setting up a cap with the 100KOhm resistor in series and then ramping up the voltage slowly until I get to 50 VDC. Or should I just set the voltage to 50 VDC, turn off the supply, hook everything up, and turn it back on?
 
#92
dimkasta said:
Thanks a lot for the quick answer
So motors still get power from J6 if we use separate V1,V2,V3,V4 ?
Do you mind posting what voltages/amperages are needed for each Vx?
Click to expand...

V1=V2=V3=V4=5V

For V1 current should be between 30mA and 60mA or more depending on disk type (CD,CD-R or CD-RW) and speed. An 150mA should be enough.
For V2 current is ~40mA. An 5V at 100mA should cover the need.
For V3 current is ~20mA or less. 50mA should be OK.
For V4 current is ~ 50mA. 100mA should be OK.

Regards,
Tibi
 
Last edited by a moderator:
#94
tvicol said:
In fact resistor will act like a variable ccs. While the voltage is dropping the current will drop as well protecting the cap from overheating.

Regards,
Tibi
Click to expand...

I just bought a Blue ESR meter! Hope to have it by Saturday. Better safe than sorry. I want to show progress as quickly as possible Tibi 😉, but apart from the two Shigas on my plate I'm also trying to finish mods to my (vinyl) turntable and completing the construction of a constrained layer platform for same.
 
#97
Well there are many other combinations as well. It´s up to your imagination how to combine them.

If you want to use separate 5V supply for V4, you need to remove L4 & L5 beads. Than, you can power the rest of Shiga via a separate 5V for V3 without removing L1, L2 & L3 beads.
Main 8V should be present as well via J6.

Hope is clear. 🙂

Regards,
Tibi
 
You must log in or register to reply here.
Top Bottom