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49 Miniwatt Miniature valves
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Return to top of page · Post #: 1 · Written at 12:41:33 PM on 11 March 2014.
	Art Location: Somewhere, USA Member since 22 October 2013 Member #: 1437 Postcount: 896
Hi Guys, Is it true that there are only 49 types of Philips Miniwatt tubes in subminiature form? I was lucky to borrow the Miniwatt Electronics Handbook I (1965), and it's list of 49 valves does cover every type I have seen in AM radio. Out of that list, there are only five types that are not prefixed with a "6", including the 12AX7 & 12AU7. Image Link Image Link Or is there another handbook out there with more types? If the book happens to be rare, and anyone wants some copies out of it, now would be the time to speak up! Cheers, Brek.

Return to top of page · Post #: 2 · Written at 1:19:23 PM on 11 March 2014.
	MonochromeTV Location: Melbourne, VIC Member since 20 September 2011 Member #: 1009 Postcount: 1208
There is the locally produced Miniwatt Technical Data Book. This has considerably more valve types than the book shown on the link. It also has data for Picture Tubes and a few a diode and transistor types as well. The Miniwatt Technical Data Book is available freely on-line. I'll send the link when I get home tonight.

Return to top of page · Post #: 3 · Written at 1:26:03 PM on 11 March 2014.
	Art Location: Somewhere, USA Member since 22 October 2013 Member #: 1437 Postcount: 896
Ah cool! It might end up that I get to keep this one, but it's not a given. It was hard to miss if you've ever seen a genuine Miniwatt valve box!

Return to top of page · Post #: 4 · Written at 8:51:32 PM on 11 March 2014.
	MonochromeTV Location: Melbourne, VIC Member since 20 September 2011 Member #: 1009 Postcount: 1208
Here is a whole pile of Philips/Miniwatt data sheets and documents. http://frank.pocnet.net/other/Philips/index.html.

Return to top of page · Post #: 5 · Written at 9:56:11 PM on 11 March 2014.
	Airzone Location: Maclean, NSW Member since 30 May 2008 Member #: 291 Postcount: 341
I have to Miniwatt Technical Data Book 7th Edition 1967 if you need any info Peter

Return to top of page · Post #: 6 · Written at 11:40:21 PM on 11 March 2014.
	NewVista Location: Silver City WI, US Member since 10 May 2013 Member #: 1340 Postcount: 977
These were high quality, I would mine old TVs & radios for their audio types (12AU7, 12AX7, 6BM8, 6BQ5...) and stick in less valuable brands in their place. Philips originally developed the highly popular (with audiophiles) 6BQ5. 6BM8's now have a cult audiophile status and are hard to find being only employed widely in Australian TVs for some reason!

Return to top of page · Post #: 7 · Written at 11:52:26 PM on 11 March 2014.
	Art Location: Somewhere, USA Member since 22 October 2013 Member #: 1437 Postcount: 896
I had to go check if I had 6BM8, but no joy! EDIT,,, whoops! I have got one, but it's AWA Radiotron, can I still get rich off it? I guess since the data is available the book is only a keepsake then, but that does make it more likely I'll be able to keep it

Return to top of page · Post #: 8 · Written at 4:34:09 AM on 12 March 2014.
	NewVista Location: Silver City WI, US Member since 10 May 2013 Member #: 1340 Postcount: 977
I've heard AWV mfg actually used RCA assembly line equip - therefore equivalent to RCA which are liked - especially the professional numbered series: 7025, 5879, 7199,(pre-amp) and 6550, 7868, 6973, 7027 (pwr-amp) Some early Amer & Japn hi fi Amps used 6BM8s You can find the desirable Mullard 6BM8s in old Aust BUSH TVs that always used imported Mullards! Mullard may have been owned by Philips by then so they may be really rebranded Miniwatts? I got a big bunch of Philips' 6DJ8s out of an early HP oscilloscope, they are branded 'Hewlett Packard' / 'Amperex' (Miniwatt) 'made in Holland'. I hear they use these in High End phono pre-amps.

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