For the air cores, I think it doesn’t matter. ?For the tandem core, I don’t know. ?For the big ones, I think they are all clockwise.
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Look at the board and think about it a while...
On 27/01/2023 16:35, Daniel L'Hommedieu
wrote:
TIL: toroids can be wound clockwise or counterclockwise. ?eek… had
no idea...
In which direction are the toroids on the ATU-100 to
be wound?
On Jan 27, 2023, at 11:30, Joe - KF7MIX < joe@...>
wrote:
This
explains it clearly, and has a picture at the bottom
showing 20 wraps:
Joe
On 1/27/23 10:19, mike
wrote:
If you stop and think about it for a while
it will become apparent that for every pass through
the core, while the winding is incomplete, there
will be one pass over the core - except on the last
pass when it doesn't pass over the core because the
winding is complete. So, for 20 turns through the
core , is that 18, 19, 20, 21 or 22 over the core ?
On 27/01/2023 16:08, paul
larner wrote:
i am talking about the end of the wind where it
passes thru the hole from the opposit side of the
core and say gets soldered in the pcb,so for example
if i have a core with 20 turns do i count 22 on the
outside of the core or 18,hope that is
clear?,cheers+73.
|
Look at the board and think about it a while...
On 27/01/2023 16:35, Daniel L'Hommedieu
wrote:
toggle quoted message
Show quoted text
TIL: toroids can be wound clockwise or counterclockwise. ?eek… had
no idea...
In which direction are the toroids on the ATU-100 to
be wound?
On Jan 27, 2023, at 11:30, Joe - KF7MIX < joe@...>
wrote:
This
explains it clearly, and has a picture at the bottom
showing 20 wraps:
Joe
On 1/27/23 10:19, mike
wrote:
If you stop and think about it for a while
it will become apparent that for every pass through
the core, while the winding is incomplete, there
will be one pass over the core - except on the last
pass when it doesn't pass over the core because the
winding is complete. So, for 20 turns through the
core , is that 18, 19, 20, 21 or 22 over the core ?
On 27/01/2023 16:08, paul
larner wrote:
i am talking about the end of the wind where it
passes thru the hole from the opposit side of the
core and say gets soldered in the pcb,so for example
if i have a core with 20 turns do i count 22 on the
outside of the core or 18,hope that is
clear?,cheers+73.
|
Does not matter for a single winding, for multiple windings ON THE SAME CORE wind them all in the same direction.
toggle quoted message
Show quoted text
TIL: toroids can be wound clockwise or counterclockwise. ?eek… had no idea...
In which direction are the toroids on the ATU-100 to be wound? On Jan 27, 2023, at 11:30, Joe - KF7MIX < joe@...> wrote:
This explains it clearly, and has a picture at the bottom showing 20
wraps:
Joe
On 1/27/23 10:19, mike wrote:
If you stop and think about it for a while it will become
apparent that for every pass through the core, while the winding
is incomplete, there will be one pass over the core - except on
the last pass when it doesn't pass over the core because the
winding is complete. So, for 20 turns through the core , is that
18, 19, 20, 21 or 22 over the core ?
On 27/01/2023 16:08, paul larner
wrote:
i am talking about the end of the wind where it passes thru the
hole from the opposit side of the core and say gets soldered in
the pcb,so for example if i have a core with 20 turns do i count
22 on the outside of the core or 18,hope that is
clear?,cheers+73.
|
ONLY the turns that pass through the toroid count. An example, take a piece of straight wire and pass it through the toroid, , that is one turn, if you bend the wire so that the left hand side of the wire has come over the outside of the toroid and is now on the same side as the other end of the wire IT IS STILL ONLY one turn, it has to physically go back through the toroid centre a second time to count as a second turn. Always count the turns on the INSIDE of ?the toroid, they are the ones that count.
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On 27 Jan 2023, at 16:14, Joe - KF7MIX < joe@...> wrote:
I'm no expert, but my understanding is that you count the wire as it
passes over the toroid. The ADX-UNO project has an instructional PDF
with photos, and that is how they count them there. If I'm replacing
something, I wrap it just as I found it.
When you're done winding, you'll have a wire exiting on the front,
and a wire exiting on the back; count the wire as it passes over the
toroid, including the pass as it leaves. Flip it over and the count
will be identical. Some projects seem to ask you to go left-to-right
or right-to-left, but I'm not sure that matters much. I always try
to follow whatever the project says, since I don't know what I'm
doing!
73, Joe KF7MIX
On 1/27/23 10:08, paul larner wrote:
i am talking about the end of the wind where it passes thru the
hole from the opposit side of the core and say gets soldered in
the pcb,so for example if i have a core with 20 turns do i count
22 on the outside of the core or 18,hope that is clear?,cheers+73.
|
TIL: toroids can be wound clockwise or counterclockwise. ?eek… had no idea...
In which direction are the toroids on the ATU-100 to be wound?
toggle quoted message
Show quoted text
On Jan 27, 2023, at 11:30, Joe - KF7MIX < joe@...> wrote:
This explains it clearly, and has a picture at the bottom showing 20
wraps:
Joe
On 1/27/23 10:19, mike wrote:
If you stop and think about it for a while it will become
apparent that for every pass through the core, while the winding
is incomplete, there will be one pass over the core - except on
the last pass when it doesn't pass over the core because the
winding is complete. So, for 20 turns through the core , is that
18, 19, 20, 21 or 22 over the core ?
On 27/01/2023 16:08, paul larner
wrote:
i am talking about the end of the wind where it passes thru the
hole from the opposit side of the core and say gets soldered in
the pcb,so for example if i have a core with 20 turns do i count
22 on the outside of the core or 18,hope that is
clear?,cheers+73.
|
This explains it clearly, and has a picture at the bottom showing 20
wraps:
Joe
On 1/27/23 10:19, mike wrote:
toggle quoted message
Show quoted text
If you stop and think about it for a while it will become
apparent that for every pass through the core, while the winding
is incomplete, there will be one pass over the core - except on
the last pass when it doesn't pass over the core because the
winding is complete. So, for 20 turns through the core , is that
18, 19, 20, 21 or 22 over the core ?
On 27/01/2023 16:08, paul larner
wrote:
i am talking about the end of the wind where it passes thru the
hole from the opposit side of the core and say gets soldered in
the pcb,so for example if i have a core with 20 turns do i count
22 on the outside of the core or 18,hope that is
clear?,cheers+73.
|
If you stop and think about it for a while it will become
apparent that for every pass through the core, while the winding
is incomplete, there will be one pass over the core - except on
the last pass when it doesn't pass over the core because the
winding is complete. So, for 20 turns through the core , is that
18, 19, 20, 21 or 22 over the core ?
On 27/01/2023 16:08, paul larner wrote:
toggle quoted message
Show quoted text
i am talking about the end of the wind where it passes thru the
hole from the opposit side of the core and say gets soldered in
the pcb,so for example if i have a core with 20 turns do i count
22 on the outside of the core or 18,hope that is clear?,cheers+73.
|
I'm no expert, but my understanding is that you count the wire as it
passes over the toroid. The ADX-UNO project has an instructional PDF
with photos, and that is how they count them there. If I'm replacing
something, I wrap it just as I found it.
When you're done winding, you'll have a wire exiting on the front,
and a wire exiting on the back; count the wire as it passes over the
toroid, including the pass as it leaves. Flip it over and the count
will be identical. Some projects seem to ask you to go left-to-right
or right-to-left, but I'm not sure that matters much. I always try
to follow whatever the project says, since I don't know what I'm
doing!
73, Joe KF7MIX
On 1/27/23 10:08, paul larner wrote:
toggle quoted message
Show quoted text
i am talking about the end of the wind where it passes thru the
hole from the opposit side of the core and say gets soldered in
the pcb,so for example if i have a core with 20 turns do i count
22 on the outside of the core or 18,hope that is clear?,cheers+73.
|
i am talking about the end of the wind where it passes thru the hole from the opposit side of the core and say gets soldered in the pcb,so for example if i have a core with 20 turns do i count 22 on the outside of the core or 18,hope that is clear?,cheers+73.
|
through the middle... the hole ... OK ?
On 27/01/2023 15:50, paul larner wrote:
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just a quick questionif on a torroid the start of the winding say
passes from left to right,does that first pass count as 1 turn,ie
before it passes over the top of the core,a sort of half turn?.
cheers+ 73.
|
just a quick question,if on a torroid the start of the winding say passes from left to right,does that first pass count as 1 turn,ie before it passes over the top of the core,a sort of half turn?. cheers+ 73.
|
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got that wrong folks it was?
David Browne 2E0DMB who helped me,sorry about that,having a senior moment! 73.
|
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Hi Paul You got the wrong David It was me that helped you yesterday, David Browne 2E0DMB
just want to say a big thank you to David Fainitski? for spending a lot of time yesterday helping me with my pic that was write+ read protected,not sure why this was as it was a new untouched kit,not sure how we sorted it but it now programs fine,thanks for all the help david,73 Paul m3vuv.
|
Its quite straight forward, Daniel. Here's what I do.
Prepare a couple of RG59 (75R) centre signal wires with the
insulation trimmed to act as the primary windings. This cable has
a solid inner core and fits perfectly through the core with the
secondary winding.
Wind the secondary turns on one hole of the binocular core,
arranged so that when placed on the pcb the windings don't get
caught between core and the pcb. Try not to cross the windings
over each other and count ONE pass through the core as one turn.
Once you have one of the secondary windings done hold them in
place with one of the? RG59 inners passed through the hole thus
holding the windings in place. then wind the second secondary
winding through the second hole, fixng in place with the second
piece of RG59.
VERY carefully burn off the insulation on the secondarys, scrape
any smuts from the wire. Solder the primary windings first to
locate the core then solder the secondaries. AFIK It does'nt
matter the direction of the windings in this instance.
Daniel L'Hommedieu wrote:
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Hi, all.
I recently (November or December) bought an ATU-100 kit. ?I can
solder any of it, no problem, but I am terrible at winding
toroids, and don't have the first idea about how to wind this
tandem toroid. ?Could anyone instruct me on how to wind a tandem
toroid? ?There are no videos about this on YouTube, at least
none that I have been able to find. ?I really want to get this
ATU-100 built.
Thanks.
|
Hi Paul You got the wrong David It was me that helped you yesterday, David Browne 2E0DMB
just want to say a big thank you to David Fainitski? for spending a lot of time yesterday helping me with my pic that was write+ read protected,not sure why this was as it was a new untouched kit,not sure how we sorted it but it now programs fine,thanks for all the help david,73 Paul m3vuv.
|
if i remember i wound mine using each torroid hole as as individual torrent,cant remember if the windings were in the same direction tho,i actualy found that the easyest to wind!.73
|
just want to say a big thank you to David Fainitski? for spending a lot of time yesterday helping me with my pic that was write+ read protected,not sure why this was as it was a new untouched kit,not sure how we sorted it but it now programs fine,thanks for all the help david,73 Paul m3vuv.
|
Hi, all.
I recently (November or December) bought an ATU-100 kit. ?I can solder any of it, no problem, but I am terrible at winding toroids, and don't have the first idea about how to wind this tandem toroid. ?Could anyone instruct me on how to wind a tandem toroid? ?There are no videos about this on YouTube, at least none that I have been able to find. ?I really want to get this ATU-100 built.
Thanks.
|
Re: Voltage regulator warm during programming
Well, after doing some reading and testing the programmer, I've come to
the conclusion that the programmer is faulty.
The Vdd pin appears to be constantly at 0.8V regardless of the power
setting applied in MPLAB IPE, which would lead to increased current draw
and explain the warm 7805.
Back to Amazon it goes!
"Matt Melling" <mattmelling@...> writes:
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Hi David,
I did try that but got a message from MPLAB IPE that the circuit was
drawing too much current, although I did not measure the draw. I read
elsewhere about programming at a lower voltage so may try to see if that
works.
73,
Matt
"David Fainitski" <rolin791@...> writes:
Hi, Matt
Is your pickit 3.5 can work properly as a voltage source ? Use it as a 5V source for supply the board.
|
mike