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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 07, 2018 12:41 am 
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Location: Brooklyn, NY 11217
So looking at the schematic of the later polymeter matches the 9.2ohms in the unit.


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 07, 2018 4:18 pm 
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Location: Dos Rios, CA.
Hey all "green" posters! I have a copy of the 134Z Instruction book I'll scan in by the weekend.
So if anyone wants a copy and I don't have your email already, send me a PM
I may put it up on BAMA since Al's Dad's probe patent noted here (wonderful neat historical info and research by the way everyone!) has generated a "Polymeter collectors frenzy" on ARF so to speak out of the blue
I think I read somewhere the "Z" most of the time in Sylvania Electric's updated models usually refers to higher range capabilities, otherwise pretty much same circuit...
Here's a few photos from my Sylvania Electric "Emporium" of wildfire dust (yes I need to clean my test room :(

Have a bunch of Sylvania Electric instruction manuals I can scan including scopes, generators, testers, etc, if anyone needs anything besides polymeters, give me a shout before you "buy" anything,
although I don't have em all...yet 8)


Attachments:
Sylvania Electric 139 9 7 18 6.JPG
Sylvania Electric 139 9 7 18 6.JPG [ 156.9 KiB | Viewed 915 times ]
Sylvania Polymeters 221 & 134 9 7 18 9.JPG
Sylvania Polymeters 221 & 134 9 7 18 9.JPG [ 146.65 KiB | Viewed 915 times ]
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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 07, 2018 6:14 pm 
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Attachment:
Sylvania Electric Miss Quietrole.jpg
Sylvania Electric Miss Quietrole.jpg [ 248.11 KiB | Viewed 908 times ]
These little brochures I received along with a mint condition gray 140 Tube tester which didn't need much to get operating smoothly, just a new .01 shorts cap if I recall...


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Sylvania Electric Test equip flyer.jpg
Sylvania Electric Test equip flyer.jpg [ 191.27 KiB | Viewed 908 times ]
Sylvania Electric Test equip flyer 2.jpg
Sylvania Electric Test equip flyer 2.jpg [ 214.13 KiB | Viewed 908 times ]
Sylvania Electric Test equip flyer 3.jpg
Sylvania Electric Test equip flyer 3.jpg [ 191.93 KiB | Viewed 908 times ]
Sylvania Electric Test equip flyer 4.jpg
Sylvania Electric Test equip flyer 4.jpg [ 162.94 KiB | Viewed 908 times ]
Sylvania Electric Type 140 9 7 18 13.JPG
Sylvania Electric Type 140 9 7 18 13.JPG [ 135.14 KiB | Viewed 908 times ]
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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 07, 2018 7:33 pm 
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Very cool collection ampstamp88, the Hickok Jumbo meter isn’t something you see every day either. I wish I had more room to collect some equipment. I only have a few discrete pieces of “uncommon” electronic test equipment and some early computer junk I have the space to keep around. That’s why I like seeing pictures- to at least look at all the stuff I can’t buy. ;)

-Mark-


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 07, 2018 8:09 pm 
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Thank you Mark for your compliment and for noticing my "Jumbo" Meter, I think the elusive rare Espey 105 mutual conductance tester from WWII, (Simpson I-177B shown to the right of the Espey) the I-177 models competition in the military purchase sector is also shown closed up in foreground of that photo...as well as a W.E. K.S. Hickok tester and a Clough-Brengle 125 (71A tube) tester, on the subject of "uncommon" pieces...

Glad Al posted this about his Dad's invention as it's created a new interest in "Sylvania Electric" on ARF, I've been collecting/restoring them for a few years now and I always wondered why everyone's so enthralled with Hickok and Jackson designs, while the little green men just linger back in the woodwork waiting their turn :)



Here's some more fun stuff on the type 134 OP...
-Kent


Attachments:
Sylvania Electric 134 Polymeter Ad RN Dec 1946.jpg.jpg
Sylvania Electric 134 Polymeter Ad RN Dec 1946.jpg.jpg [ 231.27 KiB | Viewed 898 times ]
Sylvania 134 Polymeter Sales Brochure.jpg
Sylvania 134 Polymeter Sales Brochure.jpg [ 170.8 KiB | Viewed 898 times ]
Sylvania 134 Polymeter Sales Brochure 2.jpg
Sylvania 134 Polymeter Sales Brochure 2.jpg [ 201.29 KiB | Viewed 898 times ]
Sylvania 134 Polymeter Sales Brochure 3.jpg
Sylvania 134 Polymeter Sales Brochure 3.jpg [ 200.99 KiB | Viewed 898 times ]
Sylvania 134 Polymeter Sales Brochure 4.jpg
Sylvania 134 Polymeter Sales Brochure 4.jpg [ 175.15 KiB | Viewed 898 times ]


Last edited by ampstamp88 on Sep Tue 11, 2018 7:34 pm, edited 1 time in total.
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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 08, 2018 2:53 am 
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Location: Brooklyn, NY 11217
Thanks for the manual. I have 5 resistors and 4 pots left to replace in my 134. The unit looked clean inside, but all but 10 of the resistors had drifted out of spec. Not surprising for an almost 80 year old unit. 5 of the resistors were wire wounds that were fine. The non-wire wound pots are fine, but 4 of the wire wounds were open frame and cardboard mounted. The forms they are on have all warped. I need to get 3 2W 3k pots and one 2W 100 ohm pot. I have changed all but two mica caps. I need to swap them out as well, though I was tempted to leave them both in as they are aerovox.

Shawn


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 08, 2018 3:17 am 
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Curious if Sylvania used Wilkor/Aerovox "Carbofilm" metal film precision resistors in these like HP used in the 410A. These were all the rage during WWII and for a while thereafter. But with age, drifting isn't uncommon with them. It probably depends a lot on where the meter was stored, as I have a HP 410B with the Wilkor resistors that are all still spot on.

-Mark-


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 08, 2018 4:02 am 
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Yes, I think how the units were stored for many years unused has a lot to do resistor drift later...

You can sometimes see they look "sun baked" or strangely glossy and they don't have the same appearance at all as when they're overheated from use near a filter cap or something, in fact those resistors in old units sometimes test closer to original specs! (less susceptible to changes being hardened from heat?)

Noticed this look mostly with the carbon types, the older dogbone/ceramic type resistors get chalky or puffy when they're weird from age (i.e. Sylvania Electric 219/220 tester) , although sometimes the phenolic, base or wire itself can look a little strange, too, (mildewy gray ?) in wirewounds from the up and down constant climate change over the years...(i.e I-177 testers, Espey 105, Clough -Brengle test stuff,etc)

I think I've noticed this appearance more in pieces closed up in their cases in poor climate storage (lack of circulating air perhaps?) than ones in bare chassis exposed out in the elements...especially in old scopes, tube PA amplifiers, tv's and the like


Last edited by ampstamp88 on Sep Sat 08, 2018 4:47 am, edited 2 times in total.

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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 08, 2018 4:21 am 
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Here are some pics of the inside. All the black resistors are Continental Branded and they are garbage. They are carbon comp. A 100 ohm resistor in it had a hole in it and was leaking goo.


Attachments:
File comment: Inside.
DECDCFD0-A0AE-4551-86D4-CDD6F4C61FCF.jpeg
DECDCFD0-A0AE-4551-86D4-CDD6F4C61FCF.jpeg [ 59.58 KiB | Viewed 881 times ]
File comment: Selector switch.
F158F669-CC86-4F72-A9A3-E5244762D3BF.jpeg
F158F669-CC86-4F72-A9A3-E5244762D3BF.jpeg [ 48.64 KiB | Viewed 881 times ]
File comment: Annoying pots.
C1E7FFE6-6BD8-439D-BE92-EA36598E24F7.jpeg
C1E7FFE6-6BD8-439D-BE92-EA36598E24F7.jpeg [ 45.98 KiB | Viewed 881 times ]
14544D97-3966-46D8-9D68-A8E96A95FD95.jpeg
14544D97-3966-46D8-9D68-A8E96A95FD95.jpeg [ 51.81 KiB | Viewed 881 times ]
File comment: Turret board.
E0298EC8-2786-4D86-9BA7-A00D5D10EA21.jpeg
E0298EC8-2786-4D86-9BA7-A00D5D10EA21.jpeg [ 50.37 KiB | Viewed 881 times ]
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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 08, 2018 4:40 am 
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"Annoying pots" that's good! :lol: I don't like 'em either...they're sometimes in those old mono RTR tube decks, too...
That electrolytic and paper wax caps should be replaced, too, if you haven't already in last photo, (climate change casualties)


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 08, 2018 5:21 am 
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Interesting internals ;) Evident from the components is that Sylvania wanted to keep these VTVM's at a lower price point so radio/TV repairmen could afford to buy them. Like RCA, it was something their name could sell in the service segment, and like RCA Sylvania was at the forefront in vacuum tube development. I started working on an HP 410A I got a while back, and even with it you can see where there were still some post-war limitations as to what was available from suppliers component wise, and the learning curve they went through of improving the design that became the venerable 410B.

-Mark-


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 08, 2018 11:35 am 
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That Mallory is already gone. I used an 8uf cap I had on hand. Oddly, the Mallory is a 15uf with a 1946 date code. I assume the extra capacitance was just because that was the cap they could purchase. The wire wounds are good quality, but the carbon resistors are junk. Later polymeters went to Nobleoy resistors on the range switch instead of the carbons. This unit was in Connecticut and stored in an attic for years. Not sure about any other part of its history. I have to build probes too.


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Tue 11, 2018 7:57 pm 
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Here are some photos of the 221 parts unit I remembered I had, I don't want to offer the whole unit, but would rather part it out based on needs...
I can clean and repaint if necessary the probe clamp hardware, as obviously is in pretty poor shape, the case I repainted some time ago and is in pretty nice shape if anyone needs it, as well as other parts Shawn Fox hasn't posted for he needs already for his 134 , could be available as well...send a PM or email.

The following parts are also available if needed for finishing Sylvania Electric test equip.projects:
I'll edit and add more here later if I remember any other stuff I have around.

219/220 Tube Tester Case
Various Sylvania Electric meter parts (please inquire, no good intact meters, just parts)
219/220 Power/Filament Transformer (Tested w/leads)
Various Sylvania Electric Knobs (inquire)

I can post a F.S. post in classifieds on any of the above if needed.


Attachments:
Sylvania 221 PARTS unit 9 11 18 16.JPG
Sylvania 221 PARTS unit 9 11 18 16.JPG [ 143.2 KiB | Viewed 853 times ]
Sylvania 221 PARTS 9 11 18 17.JPG
Sylvania 221 PARTS 9 11 18 17.JPG [ 143.02 KiB | Viewed 853 times ]
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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Wed 12, 2018 5:39 pm 
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Attachment:
Sylvania 300 Calibrating Std. ARF copy.jpg
Sylvania 300 Calibrating Std. ARF copy.jpg [ 109.33 KiB | Viewed 846 times ]
Here is the sales brochure for the type 300 Calibrating Standard, developed and produced during the William Bresee era with the company...


Attachments:
Sylvania 300 Calibrating Std. Pg. 2 ARF copy.jpg
Sylvania 300 Calibrating Std. Pg. 2 ARF copy.jpg [ 98.24 KiB | Viewed 846 times ]
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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 14, 2018 6:32 pm 
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Finished swapping the resistors and the caps. Waiting on new pots. The meter powers on and I get deflection. Clearly adjustment/calibration needs to occur, but no magic smoke was let out in the process.


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Sat 15, 2018 1:47 pm 
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Looks to me like the 134z moved to a 5679 from a 7A6. Later meters use both. I had ordered 5 3k pots to replace the ones that are failing. 5 300k pots arrived. Grrr. I ordered 5 more from a different seller. So now I need to figure out what to do while I wait for their arrival.


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 28, 2018 2:45 pm 
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Well, now I have to take the selector switch completely apart. I am getting odd behavior on the DC+, but almost normal on DC-. The other ranges all have some issues, but I am willing to bet there is a switch issue at this point. Everything else has been redone and is withing spec. Sigh...


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 28, 2018 2:59 pm 
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Yes.......... but on the bright side, when you are done, you'll have a 60 year old VTVM. Ummmm ... n/m :)

_________________
Preserving the history of electronics, one boat anchor at a time! :)
www.bbtvtestequipment.com


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Sep Fri 28, 2018 3:39 pm 
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It becomes a quest... keep plugging away! When I brought my basket case HP 410A to power after refurbishing all the normal items, it had one of these oddball issues. It would stabilize for a while, then the meter would start randomly swaying + or - considerably, in no fashion that followed any logic. I unsoldered and checked all the mica caps for leakage and value, no problems there. Swapped amplifier tubes, no change. After about three hours of piddling, tapping, and going nearly insane.... finally discovered the problem was inside the well-sealed zeroing pot- good old tin whiskers.

-Mark-


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 Post subject: Re: Sylvania Polymeter type 134 designed by my dad
PostPosted: Dec Thu 13, 2018 9:07 am 
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I just received today the original manual for the Bresee designed 134 polymeter and have made a scan along with a page of corrections after instruction "book" was printed enclosed inside.
If anyone reading this post is interested in receiving a copy, send a PM with your email...
and if anyone knows how to readily convert to pdf and add to BAMA, that would be great as well.
-Kent


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