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  1. #81
    PAULRO's Avatar
    Lives in LIMERICK, Ireland. Last Activity: 3 Weeks Ago Has been a member for 4-5 years. Has a total post count of 178. Received thanks 2 times, giving thanks to others 198 times.
    yeah , what was i thinking? my record has 1 to many scratches!

  2. #82
    Quote Originally Posted by Clive S View Post
    Wow that's big for one cap I am using 3 to get 14100uF may I ask where you got it. ..Clive
    http://www.rapidonline.com/electroni...apacit-50-4017
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

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  4. #83
    Thanks that clears that up I also bought mine there code 11-2910 @ 1.85 each x 3 =5.55 but they are discontinued now . So back to ebay or aliexpress if I need more. ..Clive

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  6. #84
    PAULRO's Avatar
    Lives in LIMERICK, Ireland. Last Activity: 3 Weeks Ago Has been a member for 4-5 years. Has a total post count of 178. Received thanks 2 times, giving thanks to others 198 times.
    cheers for the link Eddie. i was just about to press the go button on this http://ie.rs-online.com/web/p/alumin...itors/0497596/ . i can get the bridge there alsohttp://www.rapidonline.com/electroni...-mb352-47-3226

  7. #85
    Quote Originally Posted by PAULRO View Post
    cheers for the link Eddie. i was just about to press the go button on this http://ie.rs-online.com/web/p/alumin...itors/0497596/ . i can get the bridge there alsohttp://www.rapidonline.com/electroni...-mb352-47-3226
    Have a search online for the caps make sure they are rated to 100v or higher you might be able to find them cheaper is you buy say 4700uf and then double them up Rapid also does the transformer as well 25 - 0 - 25v and wire the coil in series to make 50V ..Clive

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  9. #86
    PAULRO's Avatar
    Lives in LIMERICK, Ireland. Last Activity: 3 Weeks Ago Has been a member for 4-5 years. Has a total post count of 178. Received thanks 2 times, giving thanks to others 198 times.
    I would prefer to buy the drivers at Zapp but they have only 1 in stock. i phoned Gary but couldn't get through so i emailed him. Apparently the AM882 are discontinued and replaced with the EM806 which is'' the same or better specification as the AM8802 but a newer product'' . any thoughts on this would be helpful .

    this is the psu coil Standard Range Toroidal Transformers- CM0750225- 750VA 230v to 2x25v delivery next friday 20th.
    capacitor http---www.rapidonline.com-electroni...apacit-50-4017
    bridge rectiferKbpc3502 35a 200v Bridge Rect (mb352) - Rapid Online.
    Last edited by PAULRO; 13-02-2015 at 02:32 PM.

  10. #87
    Quote Originally Posted by PAULRO View Post
    I would prefer to buy the drivers at Zapp but they have only 1 in stock. i phoned Gary but couldn't get through so i emailed him. Apparently the AM882 are discontinued and replaced with the EM806 which is'' the same or better specification as the AM8802 but a newer product'' . any thoughts on this would be helpful .
    Yes they are slightly better and are affectively same drive just with updated software which allows slightly smoother running motors and less motor heating.
    I've fitted loads of EM806 and If I had choice of AM or EM I'd get the EM everytime.

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  12. #88
    Quote Originally Posted by PAULRO View Post
    this is the psu coil Standard Range Toroidal Transformers- CM0750225- 750VA 230v to 2x25v delivery next friday 20th.
    You don't need 750Va and could getaway with 625Va easily. Going large on the Va will just cause you more hassle with inrush and the extra current it provides you won't use or need.!

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  14. #89
    PAULRO's Avatar
    Lives in LIMERICK, Ireland. Last Activity: 3 Weeks Ago Has been a member for 4-5 years. Has a total post count of 178. Received thanks 2 times, giving thanks to others 198 times.
    cheers for the driver info. i had calculated for 5 motors even though i will only use 4 for the time being . the 5 will draw 13.2 amps @70 vdc hence the 750 VA.
    The 625 VA delivers 11.90 amps. i hope my calcs are correct! is there a way around the in rush of current?

  15. #90
    Quote Originally Posted by PAULRO View Post
    is there a way around the in rush of current?
    Yes Don't turn it ON. . .

    You can build an inrush circuit using resistors, thermisters etc but I prefer to avoid this and use smallest transformer possible and then use a C or D rated fuse if still trips which I rarely do upto 625va. Can use slow blow fuses as well.

    To be honest I very much doubt you'll ever run 5 Motors at same time that pull full amps at same time so I'd still go with 625Va and 12A.

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