> On 1/30/2019 7:17 AM, John S wrote:
>> On 1/29/2019 3:37 PM, amdx wrote:
>>> On 1/29/2019 2:24 PM, Phil Hobbs wrote:
>>>> On 1/29/19 3:21 PM, Tim Williams wrote:
>>>>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in
>>>>> message news:o92dnbihka_mB83BnZ2dnUU7-WGdnZ2d@supernews.com...
>>>>>>> These days, the bobbin could possibly be 3D-printed?
>>>>>>>
>>>>>>
>>>>>> If you don't mind it melting.
>>>>>>
>>>>>
>>>>> Not so -- I might not be inclined to trust an extruder product, at
>>>>> least not without a much fancier material than ABS or PLA (and in
>>>>> which case, you may need a special extruder head to handle the much
>>>>> higher temp, and possibly the abrasiveness if it's glass fiber
>>>>> reinforced).
>>>>>
>>>>> There are some pretty fantastic materials available in UV-cure
>>>>> resin, though!� Just a matter of how much you're willing to pay for
>>>>> it, and how much you'll be able to use within its shelf life...
>>>>>
>>>>> Tim
>>>>>
>>>>
>>>> Yeah, but you need a UV laser system to cure it.� It would probably
>>>> be cheaper to machine it from solid yourself than to get it printed.
>>>>
>>>> Cheers
>>>>
>>>> Phil Hobbs
>>>>
>>>
>>> �� Go to a motor rewind shop and ask for the paper they use to
>>> insulate the wire when they put it in the slot. It' not paper
>>> actually and will withstand high temperatures. Then use their high
>>> temp tape to put together a bobbin.
>>> ������������������������������� Mikek
>>
>> Probably Nomex.
>
> �Yep, I probably still have some in my junk box from the early 80's.
> �I used it to insulate between windings on pot core transformers
> in the late 90s.
> ��������������������������������� Mikek
We used it in high power inductors and transformers in the 80s to 90s.
Never had a problem.
Reply by amdx●January 30, 20192019-01-30
On 1/30/2019 7:17 AM, John S wrote:
> On 1/29/2019 3:37 PM, amdx wrote:
>> On 1/29/2019 2:24 PM, Phil Hobbs wrote:
>>> On 1/29/19 3:21 PM, Tim Williams wrote:
>>>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in
>>>> message news:o92dnbihka_mB83BnZ2dnUU7-WGdnZ2d@supernews.com...
>>>>>> These days, the bobbin could possibly be 3D-printed?
>>>>>>
>>>>>
>>>>> If you don't mind it melting.
>>>>>
>>>>
>>>> Not so -- I might not be inclined to trust an extruder product, at
>>>> least not without a much fancier material than ABS or PLA (and in
>>>> which case, you may need a special extruder head to handle the much
>>>> higher temp, and possibly the abrasiveness if it's glass fiber
>>>> reinforced).
>>>>
>>>> There are some pretty fantastic materials available in UV-cure
>>>> resin, though!� Just a matter of how much you're willing to pay for
>>>> it, and how much you'll be able to use within its shelf life...
>>>>
>>>> Tim
>>>>
>>>
>>> Yeah, but you need a UV laser system to cure it.� It would probably
>>> be cheaper to machine it from solid yourself than to get it printed.
>>>
>>> Cheers
>>>
>>> Phil Hobbs
>>>
>>
>> �� Go to a motor rewind shop and ask for the paper they use to
>> insulate the wire when they put it in the slot. It' not paper actually
>> and will withstand high temperatures. Then use their high temp tape to
>> put together a bobbin.
>> ������������������������������� Mikek
>
> Probably Nomex.
Yep, I probably still have some in my junk box from the early 80's.
I used it to insulate between windings on pot core transformers
in the late 90s.
Mikek
Reply by John S●January 30, 20192019-01-30
On 1/29/2019 3:37 PM, amdx wrote:
> On 1/29/2019 2:24 PM, Phil Hobbs wrote:
>> On 1/29/19 3:21 PM, Tim Williams wrote:
>>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in
>>> message news:o92dnbihka_mB83BnZ2dnUU7-WGdnZ2d@supernews.com...
>>>>> These days, the bobbin could possibly be 3D-printed?
>>>>>
>>>>
>>>> If you don't mind it melting.
>>>>
>>>
>>> Not so -- I might not be inclined to trust an extruder product, at
>>> least not without a much fancier material than ABS or PLA (and in
>>> which case, you may need a special extruder head to handle the much
>>> higher temp, and possibly the abrasiveness if it's glass fiber
>>> reinforced).
>>>
>>> There are some pretty fantastic materials available in UV-cure resin,
>>> though!� Just a matter of how much you're willing to pay for it, and
>>> how much you'll be able to use within its shelf life...
>>>
>>> Tim
>>>
>>
>> Yeah, but you need a UV laser system to cure it.� It would probably be
>> cheaper to machine it from solid yourself than to get it printed.
>>
>> Cheers
>>
>> Phil Hobbs
>>
>
> � Go to a motor rewind shop and ask for the paper they use to insulate
> the wire when they put it in the slot. It' not paper actually and will
> withstand high temperatures. Then use their high temp tape to put
> together a bobbin.
> ������������������������������ Mikek
Probably Nomex.
Reply by speff●January 30, 20192019-01-30
On Sunday, 13 January 2019 21:03:23 UTC-5, tub...@myshop.com wrote:
> I watched a youtube video of a guy winding his own power transformer. He
> used a pre-made plastic bobbin, wound the enameled wire as needed, and
> put in the steel laminations.
>
> Apparently he bought that bobbin, and the laminations to fit it. Is
> there a place that sells that sells the parts (bobbin and laminations)?
> On 1/29/19 3:21 PM, Tim Williams wrote:
>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message
>> news:o92dnbihka_mB83BnZ2dnUU7-WGdnZ2d@supernews.com...
>>>> These days, the bobbin could possibly be 3D-printed?
>>>>
>>>
>>> If you don't mind it melting.
>>>
>>
>> Not so -- I might not be inclined to trust an extruder product, at
>> least not without a much fancier material than ABS or PLA (and in
>> which case, you may need a special extruder head to handle the much
>> higher temp, and possibly the abrasiveness if it's glass fiber
>> reinforced).
>>
>> There are some pretty fantastic materials available in UV-cure resin,
>> though!� Just a matter of how much you're willing to pay for it, and
>> how much you'll be able to use within its shelf life...
>>
>> Tim
>>
>
> Yeah, but you need a UV laser system to cure it.� It would probably be
> cheaper to machine it from solid yourself than to get it printed.
>
> Cheers
>
> Phil Hobbs
>
Go to a motor rewind shop and ask for the paper they use to insulate
the wire when they put it in the slot. It' not paper actually and will
withstand high temperatures. Then use their high temp tape to put
together a bobbin.
Mikek
Reply by Phil Hobbs●January 29, 20192019-01-29
On 1/29/19 3:21 PM, Tim Williams wrote:
> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message
> news:o92dnbihka_mB83BnZ2dnUU7-WGdnZ2d@supernews.com...
>>> These days, the bobbin could possibly be 3D-printed?
>>>
>>
>> If you don't mind it melting.
>>
>
> Not so -- I might not be inclined to trust an extruder product, at least
> not without a much fancier material than ABS or PLA (and in which case,
> you may need a special extruder head to handle the much higher temp, and
> possibly the abrasiveness if it's glass fiber reinforced).
>
> There are some pretty fantastic materials available in UV-cure resin,
> though!� Just a matter of how much you're willing to pay for it, and how
> much you'll be able to use within its shelf life...
>
> Tim
>
Yeah, but you need a UV laser system to cure it. It would probably be
cheaper to machine it from solid yourself than to get it printed.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.nethttp://hobbs-eo.com
Reply by Tim Williams●January 29, 20192019-01-29
"Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message
news:o92dnbihka_mB83BnZ2dnUU7-WGdnZ2d@supernews.com...
>> These days, the bobbin could possibly be 3D-printed?
>>
>
> If you don't mind it melting.
>
Not so -- I might not be inclined to trust an extruder product, at least not
without a much fancier material than ABS or PLA (and in which case, you may
need a special extruder head to handle the much higher temp, and possibly
the abrasiveness if it's glass fiber reinforced).
There are some pretty fantastic materials available in UV-cure resin,
though! Just a matter of how much you're willing to pay for it, and how
much you'll be able to use within its shelf life...
Tim
--
Seven Transistor Labs, LLC
Electrical Engineering Consultation and Design
Website: https://www.seventransistorlabs.com/
Reply by Phil Hobbs●January 29, 20192019-01-29
On 1/28/19 4:47 PM, Robert Roland wrote:
> On Sun, 13 Jan 2019 20:03:16 -0600, tubeguy@myshop.com wrote:
>
>> Apparently he bought that bobbin, and the laminations to fit it. Is
>> there a place that sells that sells the parts (bobbin and laminations)?
>
> These days, the bobbin could possibly be 3D-printed?
>
If you don't mind it melting.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.nethttps://hobbs-eo.com
Reply by Robert Roland●January 28, 20192019-01-28
On Sun, 13 Jan 2019 20:03:16 -0600, tubeguy@myshop.com wrote:
>Apparently he bought that bobbin, and the laminations to fit it. Is
>there a place that sells that sells the parts (bobbin and laminations)?
These days, the bobbin could possibly be 3D-printed?
--
RoRo
Reply by ●January 21, 20192019-01-21
On Monday, 21 January 2019 07:28:15 UTC, whit3rd wrote:
> On Friday, January 18, 2019 at 12:32:30 PM UTC-8, George Herold wrote:
> > Magnetostriction in the iron? Hum should be at 100/120 Hz and not 50/60.
>
> With a resistive load, yes; with a rectifying load, could be either or both.