[ARC5] Replacing a gas VR with a zener (Was reduced B+ Report)

[Geoff]

I have been using defunct OZ4's since the 60's for SS and other mods; pry up 
the metal cover, unsolder the 0Z4 leads to remove and build what you want. 
Test and then put the cover back on along with a label of whats inside.


----- Original Message ----- 
From: "J. Forster" <jfor at quikus.com>
To: "Leslie Smith" <vk2bcu at operamail.com>
Cc: "ARC-5 List" <arc5 at mailman.qth.net>
Sent: Friday, September 07, 2012 5:08 PM
Subject: Re: [ARC5] Replacing a gas VR with a zener (Was reduced B+ Report)


> Les,
>
> It's a good idea but certainly not original. The selfsame trick has been
> used to make SS replacements for tubes in a BC-221, for vibrators in a
> number of sets, and, commercially, for plug-in replacements for 866s and
> other big rectifier tubes.
>
> Best,
>
> -John
>
> ===============
>
>
>> Dear List-members,
>> If you wish, you may use an existing "tube" socket, already wired in the
>> chassis. (eg to replace a gas regulator with a zener regulator) may I
>> suggest the following abso-bloody-lutely brilliant and competetely
>> non-obvious gem of an idea:
>> (1) Mount the zener (or other component of interest) on strip-board cut
>> to a
>>     size that is smaller in diameter than an octal plug.  (You're going
>>     to mount the strip-board
>>     inside an octal tube-base.  Bet no-one ever thought of this before!
>>      Any takers at 50:1?)
>> (2) Take a "dead" octal "tube"/valve and place inside a paper bag.
>> (3) Place the bag (and "tube") in the jaws of a vyce and break the
>> glass.
>>     You now have an octal plug.  Or you can buy a new 8-pin octal plug
>>     from a shop.  Cheap.
>> (4) Mount the strip-board in the plug, noting the function of each pin
>> etc
>> (5) Insert the "thingy" you made in the radio tube socket.  Stand back
>> and turn on the power.
>> (6) Watch the "thingy" destroy your lovely old radio because you wired
>> the "thingy" incorrectly.
>> (7) Blame me - it's all my fault.
>>
>> 73 de Les
>> AR K
>>
>>
>>
>> --
>>   Leslie Smith
>>   vk2bcu at operamail.com
>>
>>
>> On Sat, Sep 8, 2012, at 02:15, Kenneth G. Gordon wrote:
>>> On 7 Sep 2012 at 11:11, David Stinson wrote:
>>>
>>> > IMHO, such "Borg Implants" are going to be the
>>> > salvation of many of our old sets.
>>>
>>> Absolutely!!!! As you so correctly point out, if these are properly
>>> done,
>>> the
>>> originality of the equipment is never distrubed either. No new holes,
>>> easily
>>> "reverted".
>>>
>>> Good on 'ya, David.
>>>
>>> Ken W7EKB
>>> ______________________________________________________________
>>> ARC5 mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/arc5
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:ARC5 at mailman.qth.net
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>
>> --
>> http://www.fastmail.fm - Faster than the air-speed velocity of an
>>                           unladen european swallow
>>
>> ______________________________________________________________
>> ARC5 mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/arc5
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:ARC5 at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>
>
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1424 / Virus Database: 2437/5254 - Release Date: 09/07/12
>