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| UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Old-skool electronic bits
Check this out, they've got some real golden oldies on sale! Good for
art projects etc. http://www.partridgeelectronics.co.uk/ |
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#2
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Old-skool electronic bits
In message
, alexander.keys1 writes Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.partridgeelectronics.co.uk/ What a pile of old tat, you spamming **** not even cheap at that - no wonder you can't shift it -- geoff |
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#3
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SPAM: Old-skool electronic bits
On May 28, 8:06*pm, "alexander.keys1"
wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.partridgeelectronics.co.uk/ no they havent |
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#4
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SPAM: Old-skool electronic bits
Tabby wrote:
On May 28, 8:06 pm, "alexander.keys1" wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.spamtronics.co.uk/ no they havent You're right, Not an OC(P)71 in sight. And as for the price on those 2N3055s.... -- Tciao for Now! John. |
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#5
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SPAM: Old-skool electronic bits
On Sat, 28 May 2011 21:58:30 +0100, John Williamson wrote:
Tabby wrote: On May 28, 8:06 pm, "alexander.keys1" wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.spamtronics.co.uk/ no they havent You're right, Not an OC(P)71 in sight. And as for the price on those 2N3055s.... Not to mention the ECC80s... -- Use the BIG mirror service in the UK: http://www.mirrorservice.org *lightning protection* - a w_tom conductor |
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#6
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SPAM: Old-skool electronic bits
On 28/05/2011 21:58, John Williamson wrote:
Tabby wrote: On May 28, 8:06 pm, "alexander.keys1" wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.spamtronics.co.uk/ no they havent You're right, Not an OC(P)71 in sight. And as for the price on those 2N3055s.... Bah. And: http://www.amazon.co.uk/Making-Trans.../dp/0721403247 Requires 2 x OC71, and 1 OCC45, IIRC And the 2N3055 was required for almost all ETI projects! I'm assuming all the old gits here know what ETI is. -- Ron |
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#7
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SPAM: Old-skool electronic bits
"Ron Lowe" wrote in message ...
And the 2N3055 was required for almost all ETI projects! I'm assuming all the old gits here know what ETI is. A magazine? Some actual issues in the links here, although all I've seen so far are BC148s and ZTX300s: http://www.sonsivri.com/forum/index.php?topic=33827.0 -- Bartc |
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#8
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SPAM: Old-skool electronic bits
In message , BartC
writes "Ron Lowe" wrote in message ... And the 2N3055 was required for almost all ETI projects! I'm assuming all the old gits here know what ETI is. A magazine? Some actual issues in the links here, although all I've seen so far are BC148s and ZTX300s: http://www.sonsivri.com/forum/index.php?topic=33827.0 I've got so many (ETI, PE, EE) up in the loft I didn't really need any extra insulation -- geoff |
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#9
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SPAM: Old-skool electronic bits
In message , Tim
Streater writes In article , Ron Lowe wrote: On 28/05/2011 21:58, John Williamson wrote: Tabby wrote: On May 28, 8:06 pm, "alexander.keys1" wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.spamtronics.co.uk/ no they havent You're right, Not an OC(P)71 in sight. And as for the price on those 2N3055s.... Bah. And: http://www.amazon.co.uk/Making-Trans...make/dp/072140 3247 Requires 2 x OC71, and 1 OCC45, IIRC And the 2N3055 was required for almost all ETI projects! I'm assuming all the old gits here know what ETI is. No OA81? I once mended a 1940's Ministry of Supply radio with one of those - whatever rubbish they used for a rectifier for the IF was long since dead. Used to listen to 208 on that one. Luxemburg IIRC -- geoff |
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#10
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SPAM: Old-skool electronic bits
In message on Sat, 28
May 2011 23:37:38 +0100 Tim Streater wrote: No OA81? I once mended a 1940's Ministry of Supply radio with one of those - whatever rubbish they used for a rectifier for the IF was long since dead. Used to listen to 208 on that one. Who needs an OA81 when you can get the an OA91 for 33 pence? Direct equivalent IIRC but in a much smaller package and, thus, much more versatile ... .... or is it your eyesight that is the problem these days ...?  -- Terry |
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#11
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SPAM: Old-skool electronic bits
In message on Mon, 30
May 2011 12:18:34 +0100 Tim Streater wrote: In article , Terry Casey wrote: In message on Sat, 28 May 2011 23:37:38 +0100 Tim Streater wrote: No OA81? I once mended a 1940's Ministry of Supply radio with one of those - whatever rubbish they used for a rectifier for the IF was long since dead. Used to listen to 208 on that one. Who needs an OA81 when you can get the an OA91 for 33 pence? Direct equivalent IIRC but in a much smaller package and, thus, much more versatile ... ... or is it your eyesight that is the problem these days ...? No OA91 in 1960 as far as I know. What's 1960 got to do with it? This is 2011! You queried the lack of OA81. The OA91 that IS available on that site will be an admirable replacement for the OA81, should you need to replace it again. -- Terry |
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#12
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SPAM: Old-skool electronic bits
On May 28, 9:58*pm, John Williamson
wrote: You're right, Not an OC(P)71 in sight. And as for the price on those 2N3055s.... 2N3055s are pretty useless at any price. OTOH, only two quid for a real 2N3055H is quite a good price. These are the ones made how they used to be 30+ years ago, and they are damn-near hand-made. There's also a big trade in faked TO3 power transistors. Sometimes you even get two paralleled dice in there. They work fine at first, but any hint of thermal runaway obviously dumps more and more current into just one of them, so they're uselessly fragile. |
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#13
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SPAM: Old-skool electronic bits
On 29/05/2011 12:25, Andy Dingley wrote:
On May 28, 9:58 pm, John wrote: You're right, Not an OC(P)71 in sight. And as for the price on those 2N3055s.... 2N3055s are pretty useless at any price. OTOH, only two quid for a real 2N3055H is quite a good price. These are the ones made how they used to be 30+ years ago, and they are damn-near hand-made. There's also a big trade in faked TO3 power transistors. Sometimes you even get two paralleled dice in there. They work fine at first, but any hint of thermal runaway obviously dumps more and more current into just one of them, so they're uselessly fragile. An often overlooked point... You need to be carefull about substituting modern power transistors into old designs. The old transistors had cutoff frequencies around 1MHz, and the designs didn't concern themselves with higher frequencies. Sometimes, substituting modern devices which have significant gain at much higher frequencies can cause high frequency instability, which you may then need to damp down. -- Ron |
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#14
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SPAM: Old-skool electronic bits
On 5/31/2011 6:12 AM, Ron Lowe wrote:
On 29/05/2011 12:25, Andy Dingley wrote: On May 28, 9:58 pm, John wrote: You're right, Not an OC(P)71 in sight. And as for the price on those 2N3055s.... 2N3055s are pretty useless at any price. OTOH, only two quid for a real 2N3055H is quite a good price. These are the ones made how they used to be 30+ years ago, and they are damn-near hand-made. There's also a big trade in faked TO3 power transistors. Sometimes you even get two paralleled dice in there. They work fine at first, but any hint of thermal runaway obviously dumps more and more current into just one of them, so they're uselessly fragile. An often overlooked point... You need to be carefull about substituting modern power transistors into old designs. The old transistors had cutoff frequencies around 1MHz, and the designs didn't concern themselves with higher frequencies. Sometimes, substituting modern devices which have significant gain at much higher frequencies can cause high frequency instability, which you may then need to damp down. Audio amplifiers - what fun! It takes me back ... the smell of a hot soldering iron ... the invigorating and refreshing jolt of 230v. |
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#15
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SPAM: Old-skool electronic bits
Tabby wrote:
On May 28, 8:06 pm, "alexander.keys1" wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.partridgeelectronics.co.uk/ no they havent They've got bayonet lamp plugs - in brown and white, also BC-2pin adaptors. -- Tim Watts |
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#16
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SPAM: Old-skool electronic bits
On May 28, 11:44*pm, Tim Watts wrote:
Tabby wrote: On May 28, 8:06 pm, "alexander.keys1" wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.partridgeelectronics.co.uk/ no they havent They've got bayonet lamp plugs - in brown and white, also BC-2pin adaptors. and lots of geranium trannies & valves. But GZ32 for £25, WTH? NT |
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#17
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Old-skool electronic bits
"alexander.keys1" wrote in message ... Check this out, they've got some real golden oldies on sale! Good for art projects etc. That infinite-value capacitor seemed quite a bargain at only 4p. Then I looked more closely and it was only 1NF... -- Bartc |
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#18
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Old-skool electronic bits
"alexander.keys1" wrote in message ... Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.partridgeelectronics.co.uk/ Worked with a bloke called Partridge who was a training chap at Sumlock Comptometer back in the 1970's who started an electronic component supply business - looks like it could be the same fellow. AWEM |
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#19
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Old-skool electronic bits
On May 29, 8:43*am, "Andrew Mawson"
wrote: "alexander.keys1" wrote in message ... Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.partridgeelectronics.co.uk/ Worked with a bloke called Partridge who was a training chap at Sumlock Comptometer back in the 1970's who started an electronic component supply business - looks like it could be the same fellow. AWEM and the same stock NT |
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#20
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Old-skool electronic bits
On May 28, 8:06*pm, "alexander.keys1"
wrote: Check this out, they've got some real golden oldies on sale! Good for art projects etc. http://www.partridgeelectronics.co.uk/ Old-skool web design, that's for certain. |
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