Weller PU-1D / TCP-1 / PT-H6 parts info

[T i m]

On Mon, 18 Sep 2017 23:06:17 +1000, Chris Jones
<lugnut808@spam.yahoo.com> wrote:

<snip>

Ah, my LED definitely comes on when the heated element comes on but I
can't remember how I got there?

Oh well, I was hoping to find out how you did it. I can think of a few
ways but none of them are very elegant.

Just for you Chris, I took the bottom off my PU-1D and took a couple
of pictures of what I found inside. ;-)

https://www.dropbox.com/s/x4g0txwl813e0vn/PU-1D%20mod%201.jpg?dl=0
https://www.dropbox.com/s/x8lvblyq4qyn8me/PU-1D%20mod%202.jpg?dl=0

I think (because it's wrapped up in tape) there is a big electrolytic
cap in there as well.

I'm not sure the pictures help but as you can see it's not just a
couple of components but I'm not sure I'd go as far as to call it
elegant (especially the soldering as I was probably supposed to be
'working' when I did it). ;-)

Cheers, T i m

 

[Geo]

On Mon, 18 Sep 2017 23:47:47 +0100, T i m <news@spaced.me.uk> wrote:

Just for you Chris, I took the bottom off my PU-1D and took a couple
of pictures of what I found inside. ;-)

https://www.dropbox.com/s/x4g0txwl813e0vn/PU-1D%20mod%201.jpg?dl=0
https://www.dropbox.com/s/x8lvblyq4qyn8me/PU-1D%20mod%202.jpg?dl=0

I think (because it's wrapped up in tape) there is a big electrolytic
cap in there as well.

Can't see all the components, or be sure of the colours on those brown
bodied resistors but my reverse eng sketch is here:-
http://tinypic.com/r/24v3zm0/9

Looks like a similar version to :-
http://spritesmods.com/?art=wtcpled&page=2
detecting the transformer volts drop when the switch closes.

 

[T i m]

On Tue, 19 Sep 2017 20:40:33 +0100, Geo <nhhu-o3hu@dea.spamcon.org>
wrote:

On Mon, 18 Sep 2017 23:47:47 +0100, T i m <news@spaced.me.uk> wrote:


Just for you Chris, I took the bottom off my PU-1D and took a couple
of pictures of what I found inside. ;-)

https://www.dropbox.com/s/x4g0txwl813e0vn/PU-1D%20mod%201.jpg?dl=0
https://www.dropbox.com/s/x8lvblyq4qyn8me/PU-1D%20mod%202.jpg?dl=0

I think (because it's wrapped up in tape) there is a big electrolytic
cap in there as well.

Can't see all the components, or be sure of the colours on those brown
bodied resistors but my reverse eng sketch is here:-
http://tinypic.com/r/24v3zm0/9

Woah, that's amazing Geo, just from those two pictures. ;-)

Would you like me to confirm what the missing values are (the vertical
component and the cap)?

Looks like a similar version to :-
http://spritesmods.com/?art=wtcpled&page=2
detecting the transformer volts drop when the switch closes.

Yeah, I think I remember that being the only way we worked out we
could do it back then (well, not without a current shunt of some sort
etc).

It's funny, after making and fitting it I'd sorta forgotten I had ...
because it was out of sight and 'just worked'. ;-)

The PCB was just stuffed into a little zip top component bag and it
all bundled in there and the base put back on. I probably intended
doing it properly sometime but ... ;-)

Cheers, T i m

 

[Chris Jones]

On 19/09/2017 08:47, T i m wrote:

On Mon, 18 Sep 2017 23:06:17 +1000, Chris Jones
lugnut808@spam.yahoo.com> wrote:

snip

Ah, my LED definitely comes on when the heated element comes on but I
can't remember how I got there?

Oh well, I was hoping to find out how you did it. I can think of a few
ways but none of them are very elegant.

Just for you Chris, I took the bottom off my PU-1D and took a couple
of pictures of what I found inside. ;-)

https://www.dropbox.com/s/x4g0txwl813e0vn/PU-1D%20mod%201.jpg?dl=0
https://www.dropbox.com/s/x8lvblyq4qyn8me/PU-1D%20mod%202.jpg?dl=0

I think (because it's wrapped up in tape) there is a big electrolytic
cap in there as well.

I'm not sure the pictures help but as you can see it's not just a
couple of components but I'm not sure I'd go as far as to call it
elegant (especially the soldering as I was probably supposed to be
'working' when I did it). ;-)

Cheers, T i m

Thanks!

 

[Geo]

On Wed, 20 Sep 2017 00:48:04 +0100, T i m <news@spaced.me.uk> wrote:

Would you like me to confirm what the missing values are (the vertical
component and the cap)?

Not for my sake anyway - I was bored.

The PCB was just stuffed into a little zip top component bag and it
all bundled in there and the base put back on. I probably intended
doing it properly sometime but ... ;-)

I open boxes now and don't even know what the board inside was meant
to do - and I will have built it many years ago.

 

[T i m]

On Wed, 20 Sep 2017 15:49:43 +0100, Geo <nhhu-o3hu@dea.spamcon.org>
wrote:

On Wed, 20 Sep 2017 00:48:04 +0100, T i m <news@spaced.me.uk> wrote:


Would you like me to confirm what the missing values are (the vertical
component and the cap)?

Not for my sake anyway - I was bored.

Ok ... the next time I'm bored then. ;-)

The PCB was just stuffed into a little zip top component bag and it
all bundled in there and the base put back on. I probably intended
doing it properly sometime but ... ;-)

I open boxes now and don't even know what the board inside was meant
to do - and I will have built it many years ago.

LOL.

Cheers, T i m