Hi Calvin,
Ha ha, that's funny, I used to work for BB, just before they got swallowed by TI. But I never came across the App Note, so thank you.
The IxR scheme is as you say imprecise. I actually have a variant of the Pooge regulator which I developed, using a current mirror to achieve the rising output voltage with current. By a small modification it should be possible to add some temperature correction. Unfortunately time is against me so this remains a simulation. Sure cheaper than the maxon solution.
The ESCON is great because it allows encoder feedback, or IxR for experimentation purposes, and is prebuilt!
Thanks for all your suggestions, I will try them when I get some free time.
Best regards
Ha ha, that's funny, I used to work for BB, just before they got swallowed by TI. But I never came across the App Note, so thank you.
The IxR scheme is as you say imprecise. I actually have a variant of the Pooge regulator which I developed, using a current mirror to achieve the rising output voltage with current. By a small modification it should be possible to add some temperature correction. Unfortunately time is against me so this remains a simulation. Sure cheaper than the maxon solution.
The ESCON is great because it allows encoder feedback, or IxR for experimentation purposes, and is prebuilt!
Thanks for all your suggestions, I will try them when I get some free time.
Best regards
Just to add my experience - when modifying my PT Anni , I approached maxon direct and asked for a recommendation - they recommended 226774 RE MAX . It works very well indeed and can be controlled via any D.C power supply .
Unconfirmed rumour as it that is the same one Linn use in the radikal upgrade for LP12 .
Unconfirmed rumour as it that is the same one Linn use in the radikal upgrade for LP12 .
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Used market: Unlisted Maxon motor numbers
In regard to the used market, I have found quite a few Maxon motors on da'Bay, but I cannot decipher their labelled model numbers. For example, there's a model 133773 w/encoder on da'Bay right now, but a search Maxon's website yields no motor having that number.
They're cheap enough, but buy five or six "wrong" motors and you've anyway paid the cost of new. Is there any formula for translating the labelled number to the stock number?
In regard to the used market, I have found quite a few Maxon motors on da'Bay, but I cannot decipher their labelled model numbers. For example, there's a model 133773 w/encoder on da'Bay right now, but a search Maxon's website yields no motor having that number.
They're cheap enough, but buy five or six "wrong" motors and you've anyway paid the cost of new. Is there any formula for translating the labelled number to the stock number?
Maxon says that the (uber expensive) Kronos turntable has been upgraded with 22mm DCX motors: The perfect record player
Based on the advise I've read in this thread, I think the motor may be this one.
Of the DCX line, Maxon says they "... feature unrivaled power density (torque per volume) and absolutely quiet running."
Based on the advise I've read in this thread, I think the motor may be this one.
Of the DCX line, Maxon says they "... feature unrivaled power density (torque per volume) and absolutely quiet running."
I need a new motor for Oracle Delphi II.
I already bought for only 50€ on ebay one LSC30/2 controller.
Now i am thinking, which (new) motor should i buy - 110191 or maybe 226774 RE MAX ?
The platter on Delphi II is not so heavy - 2.7kg.
Which motor should i take ?
LS30/2 need one 2A power supply. 10 ro 30V DC regulated (LM317 ?), or not regulated, just transformer, rectifier and some caps ?
The input voltage of LS30/2 is changing the rpm ?
The connections possibilities on LSC30/2 are confusing me a little ...
So - with dip switches i can set the IxR mode.
Then they are five potentiometers P1 to P5
Their function is little unclear to me ...
P1 maximum speed at maximum set value ? what does it mean ?
P2 IxR compensation - how should i set this one ? do i need a speed sensor to use it?
P3 rpm offset, most probaly 0 ?
P4 current limit - for 110191 is ~0.7A ?
P5 with this one i can set the motor rpm ?
For the exact rpm controll i should use two (33 and 45) potentiometers. Which values ? Any advice ?
Later with one switch i can change speed beetwen 33 and 45 rpm,
I am thankfull for any advice
I already bought for only 50€ on ebay one LSC30/2 controller.
Now i am thinking, which (new) motor should i buy - 110191 or maybe 226774 RE MAX ?
The platter on Delphi II is not so heavy - 2.7kg.
Which motor should i take ?
LS30/2 need one 2A power supply. 10 ro 30V DC regulated (LM317 ?), or not regulated, just transformer, rectifier and some caps ?
The input voltage of LS30/2 is changing the rpm ?
The connections possibilities on LSC30/2 are confusing me a little ...
So - with dip switches i can set the IxR mode.
Then they are five potentiometers P1 to P5
Their function is little unclear to me ...
P1 maximum speed at maximum set value ? what does it mean ?
P2 IxR compensation - how should i set this one ? do i need a speed sensor to use it?
P3 rpm offset, most probaly 0 ?
P4 current limit - for 110191 is ~0.7A ?
P5 with this one i can set the motor rpm ?
For the exact rpm controll i should use two (33 and 45) potentiometers. Which values ? Any advice ?
Later with one switch i can change speed beetwen 33 and 45 rpm,
I am thankfull for any advice
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Thanks for the answer.
I already bought one Premotec 9904 on ebay (12€ !) and i will try it first.
Is it enough to use a very stable dc ps like this one:
Single Rail TPS7A4700 Ultra Low Noise</br>Power Supply
and potentiometer (1 for 33, and one for 45) between dc ps and motor ?
Do you know what kind of dc power supply is Origin Live using in their kits ? Is it something special ?
I already bought one Premotec 9904 on ebay (12€ !) and i will try it first.
Is it enough to use a very stable dc ps like this one:
Single Rail TPS7A4700 Ultra Low Noise</br>Power Supply
and potentiometer (1 for 33, and one for 45) between dc ps and motor ?
Do you know what kind of dc power supply is Origin Live using in their kits ? Is it something special ?
How do I perform the configuration of Maxon's DCX-22 ?
There is possible both with sintered or ball bearing, graphite or metal brushes, wide range of RpM (speed) value resp. nominal voltage.
https://www.maxongroup.com/maxon/view/configurator/BOM:DCX22S01GBKL468:::::
https://www.maxongroup.com/maxon/view/product/motor/dcmotor/DCX/DCX22/DCX22S01GBKL468
https://www.maxongroup.ch/medias/sys_master/root/8839842758686/DE-91.pdf
Under
https://www.maxongroup.com/medias/sys_master/8816508043294.pdf?attachment=true
unfortunately this isn't mentioned
Thanks for an advice.
Post #3 under
https://www.diyaudio.com/community/threads/good-dc-motor-for-diy-turn-table.391426/
recommend carbon instead metal brushes (benefit at low speed)
post #41 under
https://www.diyaudio.com/community/threads/a-few-mods-to-my-lp12.363847/page-3
provide additional information
Post 28 under
https://www.diyaudio.com/community/threads/a-few-mods-to-my-lp12.363847/page-2
explain the difference between DCX-22-L and DCX-22-S
Maybe one of the members know, which parameter have the version used in this record player from the band KRONOS::
https://www.maxongroup.com/medias/sys_master/8816508043294.pdf?attachment=true
There is possible both with sintered or ball bearing, graphite or metal brushes, wide range of RpM (speed) value resp. nominal voltage.
https://www.maxongroup.com/maxon/view/configurator/BOM:DCX22S01GBKL468:::::
https://www.maxongroup.com/maxon/view/product/motor/dcmotor/DCX/DCX22/DCX22S01GBKL468
https://www.maxongroup.ch/medias/sys_master/root/8839842758686/DE-91.pdf
Under
https://www.maxongroup.com/medias/sys_master/8816508043294.pdf?attachment=true
unfortunately this isn't mentioned
Thanks for an advice.
Post #3 under
https://www.diyaudio.com/community/threads/good-dc-motor-for-diy-turn-table.391426/
recommend carbon instead metal brushes (benefit at low speed)
post #41 under
https://www.diyaudio.com/community/threads/a-few-mods-to-my-lp12.363847/page-3
provide additional information
Post 28 under
https://www.diyaudio.com/community/threads/a-few-mods-to-my-lp12.363847/page-2
explain the difference between DCX-22-L and DCX-22-S
Maybe one of the members know, which parameter have the version used in this record player from the band KRONOS::
https://www.maxongroup.com/medias/sys_master/8816508043294.pdf?attachment=true
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Hi, You do not need ultra low noise to control the T/T speed. i made up a controller using 18VDC SMPS, Step down conv to 12 VDC the on to two electronic very small voltage controllers. Works perfectly, obviously on volt controller for 33 the other 45.
Then after a while I did a test swapping the 18 VDC SMPS over for an 18 VDC NiCad battery & measured & listened & there was no change in either.
Next I did a needle drop to see how much the speed changed and to my pleasant suprise it did not change at all, so I know my motor is well up to the job. Been going two years now & still stable.
Cheers
Then after a while I did a test swapping the 18 VDC SMPS over for an 18 VDC NiCad battery & measured & listened & there was no change in either.
Next I did a needle drop to see how much the speed changed and to my pleasant suprise it did not change at all, so I know my motor is well up to the job. Been going two years now & still stable.
Cheers