Is this a 5-pin ceramic disc capacitor? - Electronic Circuits Projects Diagrams Free

Cifrocco · 30th January 2008, 11:49 PM

I have an old tube radio, a small cheap unit that I wanted to fool around with, disassembling it and rebuilding it on some kind of educationally-friendly proto-board or something. The radio is shown in the attached photos.

At one end of the radio, underneath where the components are connected by tie-points on terminal strips, there is this flat, square component that looks a lot like a disc capacitor but it has 5 pins. I haven't finished sketching the schematic for the whole circuit so I still don't know what its purpose could be.

Do any of you have any ideas what device that is? The photos show where I extracted it from. The photo of the device itself is blurry (sorry), but the inscription on the device says "44" in one corner, then "PCO6" across the face and finally the terminals are numbered 1 to 5. Nothing on the backside.

Resistance measurements between some pins is roughly 50K-ohms but then across others it is infinite. Capacitance measurements also vary between pin sets and also fluctuate a good deal.

hotwaterwizard · 31st January 2008, 03:25 AM

Looks Like it has Motorola PC06 Printed on it is this correct?

hotwaterwizard · 31st January 2008, 03:28 AM

Do you have a Make and Model number for the Radio? We may be able to get you a Schematic.

Funny NYPD · 31st January 2008, 04:17 AM

are there some vacume tube in the pictures?

Cifrocco · 31st January 2008, 11:46 AM

Quote:

Originally Posted by hotwaterwizard

Do you have a Make and Model number for the Radio? We may be able to get you a Schematic.

The radio is a Transonic Model FAD-4 distributed by Transistor World Corp., New York 11, N.Y. USA. Says made in Japan on the back cover. There are 6 tubes and 3 diodes, dual speaker design. The 5-pin part in question is connected in the output stage that uses the 50EH5 pentode.

Thanks for your help.

Papabravo · 31st January 2008, 02:05 PM

New York 11, NY is an address with the old postal zone codes that predate the zip-code which is approaching its 50th birthday.

I remember sending 25 cents "in coin" and a cereal boxtop to Washington 25, DC when I was a kid.

Cifrocco · 31st January 2008, 11:01 PM

Quote:

Originally Posted by hotwaterwizard

Looks Like it has Motorola PC06 Printed on it is this correct?

The photo is too blurred, but no, it's not Motorola's "M" it's actually just the number "44". As for the "PCO6" it could be "PC06" (zero, not an "oh"), I'm not sure.

hotwaterwizard · 1st February 2008, 01:53 AM

I cleared the picture up best I could.
Here is what I came up with.

hotwaterwizard · 1st February 2008, 03:55 AM

http://cgi.ebay.com/Transonic-Model-...QQcmdZViewItem

Transonic Model FAD-4 AC-DC Operated 6 Tube AM-FM Receiver
Photofact Folder - November 1964
Howard W. Sams & Co., Inc

Sams Set 726 Folser 9

hotwaterwizard · 1st February 2008, 04:14 AM

http://cgi.ebay.com/ws/eBayISAPI.dll...m=140186213120

Cifrocco · 1st February 2008, 10:24 AM

Quote:

Originally Posted by hotwaterwizard

http://cgi.ebay.com/ws/eBayISAPI.dll...m=140186213120

I'm speechless! Thank you very much. I was so busy googling for 5-pin capacitors with that inscription that it never occurred to me that schematics might still be found for the radio itself, lol.

I am placing my order for the Photofact, today! I'll let you know what I discover about that mysterious part. Thanks again, much appreciated.

Cifrocco · 1st February 2008, 10:27 AM

Just great, the seller on eBay does not ship to Canada. <sigh> What should I do now?!?

hotwaterwizard · 1st February 2008, 02:37 PM

There is another on the Ebay Canada site

http://cgi.ebay.ca/Transonic-Model-F...QQcmdZViewItem

Cifrocco · 1st February 2008, 06:57 PM

Quote:

Originally Posted by hotwaterwizard

There is another on the Ebay Canada site

http://cgi.ebay.ca/Transonic-Model-F...QQcmdZViewItem

Canadian eBay has the same seller for that item, with the same shipping restrictions. I don't have patience for that kind of nonsense. I saw that Howard W. Sams still sells such old Photofacts on their website, so I ordered it for $22.00. It will be emailed to me within 1 business day. Can't wait! Thanks again, you have been very helpful.

Now I'm going to shop for some kind of proto-board on which I can rebuild the radio. It will have convenient terminal points where the signals can be measured and analyzed on my scope. My 12-yr old nephew will be thrilled, as will I of course.

hotwaterwizard · 2nd February 2008, 04:10 AM

Why would someone put something on a Canadian site that canadians can't buy? Dumb Dumb Dumb

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31st January 2008, 03:25 AM	(permalink)
hotwaterwizard	Looks Like it has Motorola PC06 Printed on it is this correct? __________________ John DeRosa (Hotwaterwizard) hotwaterwizard@aol.com

31st January 2008, 03:28 AM	(permalink)
hotwaterwizard	Do you have a Make and Model number for the Radio? We may be able to get you a Schematic. __________________ John DeRosa (Hotwaterwizard) hotwaterwizard@aol.com

31st January 2008, 04:17 AM	(permalink)
Funny NYPD	are there some vacume tube in the pictures? __________________ F.N.

31st January 2008, 02:05 PM	(permalink)
Papabravo	New York 11, NY is an address with the old postal zone codes that predate the zip-code which is approaching its 50th birthday. I remember sending 25 cents "in coin" and a cereal boxtop to Washington 25, DC when I was a kid. __________________ We never have time to do it right; but we always have time to do it over.

1st February 2008, 03:55 AM	(permalink)
hotwaterwizard	http://cgi.ebay.com/Transonic-Model-...QQcmdZViewItem Transonic Model FAD-4 AC-DC Operated 6 Tube AM-FM Receiver Photofact Folder - November 1964 Howard W. Sams & Co., Inc Sams Set 726 Folser 9 __________________ John DeRosa (Hotwaterwizard) hotwaterwizard@aol.com

1st February 2008, 04:14 AM	(permalink)
hotwaterwizard	http://cgi.ebay.com/ws/eBayISAPI.dll...m=140186213120 __________________ John DeRosa (Hotwaterwizard) hotwaterwizard@aol.com

1st February 2008, 10:27 AM	(permalink)
Cifrocco	Just great, the seller on eBay does not ship to Canada. <sigh> What should I do now?!?

1st February 2008, 02:37 PM	(permalink)
hotwaterwizard	There is another on the Ebay Canada site http://cgi.ebay.ca/Transonic-Model-F...QQcmdZViewItem __________________ John DeRosa (Hotwaterwizard) hotwaterwizard@aol.com Last edited by hotwaterwizard; 1st February 2008 at 02:40 PM.

2nd February 2008, 04:10 AM	(permalink)
hotwaterwizard	Why would someone put something on a Canadian site that canadians can't buy? Dumb Dumb Dumb __________________ John DeRosa (Hotwaterwizard) hotwaterwizard@aol.com