Nady TD 1, guitar tube distortion effect pedal

[N_Cook]

Anyone else been here before ?
End of line , being sold without the power adaptor, presumably ran out
before the units sold out.
Contains a valve so the wall-wart supply is 9-0-9 V ac and 3 wire for an
internal step up transformer ( presumably , not looked inside yet), no great
problem there to do that.
But the connector on the unit is a 3 pin locking din, like CB mike
connector, but the pin spacing is non standard, 5.5mm between pins rather
than 5 mm.
Looks as though I will have to quote silly money to mold up a compatable
line socket as he wants compatibility with his mates unit. And I think he
wanted another one made up for another mate of his. Normally, in such
situations, I would change both parts of the connector to something standard
or just wire in through a gland.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[hr(bob) hofmann@att.net]

On Mar 28, 12:10 pm, "N_Cook" <dive...@tcp.co.uk> wrote:

Anyone else been here before ?
End of line , being sold without the power adaptor, presumably ran out
before the units sold out.
Contains a valve so the wall-wart supply is 9-0-9 V ac and 3 wire for an
internal step up transformer ( presumably , not looked inside yet), no great
problem there to do that.
But the connector on the unit is a 3 pin locking din, like CB mike
connector, but the pin spacing is non standard, 5.5mm between pins rather
than 5 mm.
Looks as though I will have to quote silly money to mold up a compatable
line socket as he wants compatibility with his mates unit. And I think he
wanted another one made up for another mate of his. Normally, in such
situations, I would change both parts of the connector to something standard
or just wire in through a gland.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/

Norm:

What is a "gland" called on the western side of the big pond?

Bob Hofmann

 

[N_Cook]

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:8be2ceaf-f9fa-4565-a05a-bda3fbe02eb6@j39g2000yqn.googlegroups.com...
On Mar 28, 12:10 pm, "N_Cook" <dive...@tcp.co.uk> wrote:

Anyone else been here before ?
End of line , being sold without the power adaptor, presumably ran out
before the units sold out.
Contains a valve so the wall-wart supply is 9-0-9 V ac and 3 wire for an
internal step up transformer ( presumably , not looked inside yet), no
great
problem there to do that.
But the connector on the unit is a 3 pin locking din, like CB mike
connector, but the pin spacing is non standard, 5.5mm between pins rather
than 5 mm.
Looks as though I will have to quote silly money to mold up a compatable
line socket as he wants compatibility with his mates unit. And I think he
wanted another one made up for another mate of his. Normally, in such
situations, I would change both parts of the connector to something
standard
or just wire in through a gland.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

Norm:

What is a "gland" called on the western side of the big pond?

Bob Hofmann

__________


More than a grommet, a way of anchoring the sleeving , by compression ring
or joggled clamp. So the cable cannot twist and twist and ventually fracture
inside the box. So what are those called in the US ?
and I will add to my translator
http://www.divdev.fsnet.co.uk/tool_terms.htm

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[David Nebenzahl]

On 3/28/2009 6:29 PM hr(bob) hofmann@att.net spake thus:

On Mar 28, 12:10 pm, "N_Cook" <dive...@tcp.co.uk> wrote:

... I would change both parts of the connector to something standard
or just wire in through a gland.

What is a "gland" called on the western side of the big pond?

I would guess a grommet, but I think they (UK) have grommets over there too.


--
Made From Pears: Pretty good chance that the product is at least
mostly pears.
Made With Pears: Pretty good chance that pears will be detectable in
the product.
Contains Pears: One pear seed per multiple tons of product.

(with apologies to Dorothy L. Sayers)

 

[N_Cook]

N_Cook <diverse@tcp.co.uk> wrote in message
news:gqllie$uqe$1@news.motzarella.org...

Anyone else been here before ?
End of line , being sold without the power adaptor, presumably ran out
before the units sold out.
Contains a valve so the wall-wart supply is 9-0-9 V ac and 3 wire for an
internal step up transformer ( presumably , not looked inside yet), no
great
problem there to do that.
But the connector on the unit is a 3 pin locking din, like CB mike
connector, but the pin spacing is non standard, 5.5mm between pins rather
than 5 mm.
Looks as though I will have to quote silly money to mold up a compatable
line socket as he wants compatibility with his mates unit. And I think he
wanted another one made up for another mate of his. Normally, in such
situations, I would change both parts of the connector to something
standard
or just wire in through a gland.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

Is this another valve con job? (dated 2004)
Had to get inside to check the wiring as cold testing not consistent with a
transformer and no confirmation anywhere other than anecdotal/verbally that
the supply is 9-0-9 ac, centre ground.

That feeds a bridge R and then 7806 and 7906, 4 4580D smd opamps and a
12AX7.
Where is the HT supply ? caps are 10V,16V or 50V, input socket contains 2
crudely epoxied small unlabeleed black lumps with 6 pins
one has pin-pin resistance readings of 13K,360R and 0.1R or less
the other 18K,360,720, 0.1R or less
So perhaps transformers there, but smps combined with input amp in a can? ?.
A smd 8pin device marked AD 741 and OP 275G and a few TO92 transistors but
nothing SMPS looking inside.

Then the final test, the wiring to the valve. Whether plugs are in or out of
the 1/4 inch sockets the anodes of the genuine looking , but no label valve,
are connected to one end of the heater chain. No viewing hole to let the
owner see the presence of a glowing valve for the psychological effect of
the valve sound. This unit is new working order as the owner checked it with
another owner's ps.

Incidently note the various casing screw lengths, on disassembly as the long
ones would touch the pcb if replaced wrongly


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[David Nebenzahl]

On 3/29/2009 12:34 AM N_Cook spake thus:

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:8be2ceaf-f9fa-4565-a05a-bda3fbe02eb6@j39g2000yqn.googlegroups.com...

What is a "gland" called on the western side of the big pond?

More than a grommet, a way of anchoring the sleeving , by compression ring
or joggled clamp. So the cable cannot twist and twist and ventually fracture
inside the box. So what are those called in the US ?
and I will add to my translator
http://www.divdev.fsnet.co.uk/tool_terms.htm

I could tell you what they're called here if you could explain what a
"joggled clamp" is. Never hoid of such a thing.

Sure it's not what we call a "strain relief" fitting? Those are usually
only used for power (flat) cords.


--
Made From Pears: Pretty good chance that the product is at least
mostly pears.
Made With Pears: Pretty good chance that pears will be detectable in
the product.
Contains Pears: One pear seed per multiple tons of product.

(with apologies to Dorothy L. Sayers)

 

[Ron]

David Nebenzahl wrote:

On 3/29/2009 12:34 AM N_Cook spake thus:

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:8be2ceaf-f9fa-4565-a05a-bda3fbe02eb6@j39g2000yqn.googlegroups.com...

What is a "gland" called on the western side of the big pond?

More than a grommet, a way of anchoring the sleeving , by compression
ring
or joggled clamp. So the cable cannot twist and twist and ventually
fracture
inside the box. So what are those called in the US ?
and I will add to my translator
http://www.divdev.fsnet.co.uk/tool_terms.htm

I could tell you what they're called here if you could explain what a
"joggled clamp" is. Never hoid of such a thing.

Sure it's not what we call a "strain relief" fitting? Those are usually
only used for power (flat) cords.


A gland is the name for a close fitting surrounding a shaft, pipe or

cable, designed to prevent the ingress of foreign matter - liquids,
dust' ect, or leakage of lubricants etc.


Ron

 

[David Nebenzahl]

On 3/30/2009 2:40 AM Ron spake thus:

David Nebenzahl wrote:
On 3/29/2009 12:34 AM N_Cook spake thus:

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:8be2ceaf-f9fa-4565-a05a-bda3fbe02eb6@j39g2000yqn.googlegroups.com...

What is a "gland" called on the western side of the big pond?

More than a grommet, a way of anchoring the sleeving , by
compression ring or joggled clamp. So the cable cannot twist and
twist and ventually fracture inside the box. So what are those
called in the US ? and I will add to my translator
http://www.divdev.fsnet.co.uk/tool_terms.htm

I could tell you what they're called here if you could explain what a
"joggled clamp" is. Never hoid of such a thing.

Sure it's not what we call a "strain relief" fitting? Those are usually
only used for power (flat) cords.

A gland is the name for a close fitting surrounding a shaft, pipe or
cable, designed to prevent the ingress of foreign matter - liquids,
dust' ect, or leakage of lubricants etc.

That answers that question, but what is a "joggled clamp"?


--
Made From Pears: Pretty good chance that the product is at least
mostly pears.
Made With Pears: Pretty good chance that pears will be detectable in
the product.
Contains Pears: One pear seed per multiple tons of product.

(with apologies to Dorothy L. Sayers)

 

[N_Cook]

David Nebenzahl <nobody@but.us.chickens> wrote in message
news:49d10bb6$0$29750$822641b3@news.adtechcomputers.com...

On 3/30/2009 2:40 AM Ron spake thus:

David Nebenzahl wrote:
On 3/29/2009 12:34 AM N_Cook spake thus:

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message

news:8be2ceaf-f9fa-4565-a05a-bda3fbe02eb6@j39g2000yqn.googlegroups.com...

What is a "gland" called on the western side of the big pond?

More than a grommet, a way of anchoring the sleeving , by
compression ring or joggled clamp. So the cable cannot twist and
twist and ventually fracture inside the box. So what are those
called in the US ? and I will add to my translator
http://www.divdev.fsnet.co.uk/tool_terms.htm

I could tell you what they're called here if you could explain what a
"joggled clamp" is. Never hoid of such a thing.

Sure it's not what we call a "strain relief" fitting? Those are usually
only used for power (flat) cords.

A gland is the name for a close fitting surrounding a shaft, pipe or
cable, designed to prevent the ingress of foreign matter - liquids,
dust' ect, or leakage of lubricants etc.

That answers that question, but what is a "joggled clamp"?


--
Made From Pears: Pretty good chance that the product is at least
mostly pears.
Made With Pears: Pretty good chance that pears will be detectable in
the product.
Contains Pears: One pear seed per multiple tons of product.

(with apologies to Dorothy L. Sayers)

The cable entry glands that come in two parts, linked together, that require
a D shaped cutout through the chassis and joggle the cable where it passes
through, so locking against rotation and being pulled out.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[Ron]

N_Cook wrote:

David Nebenzahl <nobody@but.us.chickens> wrote in message
news:49d10bb6$0$29750$822641b3@news.adtechcomputers.com...
On 3/30/2009 2:40 AM Ron spake thus:

David Nebenzahl wrote:
On 3/29/2009 12:34 AM N_Cook spake thus:

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message

news:8be2ceaf-f9fa-4565-a05a-bda3fbe02eb6@j39g2000yqn.googlegroups.com...
What is a "gland" called on the western side of the big pond?
More than a grommet, a way of anchoring the sleeving , by
compression ring or joggled clamp. So the cable cannot twist and
twist and ventually fracture inside the box. So what are those
called in the US ? and I will add to my translator
http://www.divdev.fsnet.co.uk/tool_terms.htm
I could tell you what they're called here if you could explain what a
"joggled clamp" is. Never hoid of such a thing.

Sure it's not what we call a "strain relief" fitting? Those are usually
only used for power (flat) cords.
A gland is the name for a close fitting surrounding a shaft, pipe or
cable, designed to prevent the ingress of foreign matter - liquids,
dust' ect, or leakage of lubricants etc.
That answers that question, but what is a "joggled clamp"?


--
Made From Pears: Pretty good chance that the product is at least
mostly pears.
Made With Pears: Pretty good chance that pears will be detectable in
the product.
Contains Pears: One pear seed per multiple tons of product.

(with apologies to Dorothy L. Sayers)


The cable entry glands that come in two parts, linked together, that require
a D shaped cutout through the chassis and joggle the cable where it passes
through, so locking against rotation and being pulled out.

yes, it`s like a saddle clamp, which forces the cable into a U shaped
indentation, generally ensuring that one or both of the conductors fail
in a very short time - horrible design.

 

[Ross Herbert]

On Mon, 30 Mar 2009 21:06:00 +0100, Ron <ron@lunevalleyaudio.com> wrote:

:N_Cook wrote:
:> David Nebenzahl <nobody@but.us.chickens> wrote in message
:> news:49d10bb6$0$29750$822641b3@news.adtechcomputers.com...
:>> On 3/30/2009 2:40 AM Ron spake thus:
:>>
:>>> David Nebenzahl wrote:
:>>>> On 3/29/2009 12:34 AM N_Cook spake thus:
:>>>>
:>>>>> hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
:>>>>>
:> news:8be2ceaf-f9fa-4565-a05a-bda3fbe02eb6@j39g2000yqn.googlegroups.com...
:>>>>>> What is a "gland" called on the western side of the big pond?
:>>>>> More than a grommet, a way of anchoring the sleeving , by
:>>>>> compression ring or joggled clamp. So the cable cannot twist and
:>>>>> twist and ventually fracture inside the box. So what are those
:>>>>> called in the US ? and I will add to my translator
:>>>>> http://www.divdev.fsnet.co.uk/tool_terms.htm
:>>>> I could tell you what they're called here if you could explain what a
:>>>> "joggled clamp" is. Never hoid of such a thing.
:>>>>
:>>>> Sure it's not what we call a "strain relief" fitting? Those are usually
:>>>> only used for power (flat) cords.
:>>> A gland is the name for a close fitting surrounding a shaft, pipe or
:>>> cable, designed to prevent the ingress of foreign matter - liquids,
:>>> dust' ect, or leakage of lubricants etc.
:>> That answers that question, but what is a "joggled clamp"?
:>>
:>>
:>> --
:>> Made From Pears: Pretty good chance that the product is at least
:>> mostly pears.
:>> Made With Pears: Pretty good chance that pears will be detectable in
:>> the product.
:>> Contains Pears: One pear seed per multiple tons of product.
:>>
:>> (with apologies to Dorothy L. Sayers)
:>
:>
:> The cable entry glands that come in two parts, linked together, that require
:> a D shaped cutout through the chassis and joggle the cable where it passes
:> through, so locking against rotation and being pulled out.
:>
:
:yes, it`s like a saddle clamp, which forces the cable into a U shaped
:indentation, generally ensuring that one or both of the conductors fail
:in a very short time - horrible design.


If you mean one of these
http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=0543866
then your comment about conductor failure surprises me. In the 30 years (approx)
these have been around they have been used in countless appliance applications
and I have never seen cord conductors fail at the strain relief point. Of course
it would depend to some extent on how much flexing takes place at that point.
But they were never intended to be used where constant flexing at the cable
entry point occurs. Where flexing at the entry point is unavoidable, bend
reduction techniques must be employed in addition to cable securing.

 

On Mar 28, 1:10 pm, "N_Cook" <dive...@tcp.co.uk> wrote:

Anyone else been here before ?
End of line , being sold without the power adaptor, presumably ran out
before the units sold out.
Contains a valve so the wall-wart supply is 9-0-9 V ac and 3 wire for an
internal step up transformer ( presumably , not looked inside yet), no great
problem there to do that.
But the connector on the unit is a 3 pin locking din, like CB mike
connector, but the pin spacing is non standard, 5.5mm between pins rather
than 5 mm.
Looks as though I will have to quote silly money to mold up a compatable
line socket as he wants compatibility with his mates unit. And I think he
wanted another one made up for another mate of his. Normally, in such
situations, I would change both parts of the connector to something standard
or just wire in through a gland.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/

Wow....thats a little tiny piece of crap IMO. Found a gut shot of it
and there's nothing in the box hardly. Its a starved plate design. It
may have a simple voltage multiplier to get a plate supply of
30-40vdc....kinda like the "tube driver" branded boxes from the early
90s.

Where are these being sold at and for how much? The box may be good
for something if its a closeout deal....

 

[N_Cook]

no larger voltages on the valve than the -6 volt and +6 volt to the heaters
and unit worked perfectly normally when tested .


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[N_Cook]

The penny has dropped

 

[David Nebenzahl]

On 4/3/2009 1:12 PM boardjunkie@techie.com spake thus:

On Apr 3, 1:48 pm, "N_Cook" <dive...@tcp.co.uk> wrote:

no larger voltages on the valve than the -6 volt and +6 volt to the heaters
and unit worked perfectly normally when tested .

So what voltage was on the plates then? I doubt a 12a*7 will do much
of anything at a 12v plate supply.

Sounds like the tube is a phoney-baloney device, as Norm suspects: just
there for show.

"Tube sound" my ass. (In this case, anyhow.)


--
Made From Pears: Pretty good chance that the product is at least
mostly pears.
Made With Pears: Pretty good chance that pears will be detectable in
the product.
Contains Pears: One pear seed per multiple tons of product.

(with apologies to Dorothy L. Sayers)

 

[Michael A. Terrell]

boardjunkie@techie.com wrote:

So what voltage was on the plates then? I doubt a 12a*7 will do much
of anything at a 12v plate supply.

The ARN-6 Direction finding receiver used 24 volts on the plates of
all the tubes, which were mostly 12SN7. It was one of the hottest AM DX
radios I ever owned. It drew 28 A @ 24 volts before I converted it to
solid state. The 400 Hz Copper supply for the antenna servos drew most
of the power. After the conversion, it ran on a single 9 volt battery,
when used with an external audio amp.


--
And another motherboard bites the dust!

 

[David Nebenzahl]

On 4/3/2009 1:48 PM N_Cook spake thus:

The penny has dropped

????????


--
Made From Pears: Pretty good chance that the product is at least
mostly pears.
Made With Pears: Pretty good chance that pears will be detectable in
the product.
Contains Pears: One pear seed per multiple tons of product.

(with apologies to Dorothy L. Sayers)

 

On Apr 3, 1:48 pm, "N_Cook" <dive...@tcp.co.uk> wrote:

no larger voltages on the valve than the -6 volt and +6 volt to the heaters
and unit worked perfectly normally when tested .

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/

So what voltage was on the plates then? I doubt a 12a*7 will do much
of anything at a 12v plate supply.

 

[Jitt]

In article <109b2ef9-993f-4992-a73a-
363a8ab8df3b@h28g2000yqd.googlegroups.com>,
boardjunkie@techie.com says...

On Apr 3, 1:48 pm, "N_Cook" <dive...@tcp.co.uk> wrote:
no larger voltages on the valve than the -6 volt and +6 volt to the heaters
and unit worked perfectly normally when tested .

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/

So what voltage was on the plates then? I doubt a 12a*7 will do much
of anything at a 12v plate supply.

The point of the device seems to be clipping, which will

happen at a low signal level with LV plate supply. Thus,
"tube distortion"!