[HomeBrew] Batteries

[Bill Cromwell]

Hi,

My first thought was the coin rolls used to store quarters - evil grin. 
I have been using stacks of 9-volt batteries for 90 volts on my ARC-5 
command receivers. No solder is involved since they snap together sort 
of like Lego building blocks. The current load is about 16 mA for the 
six tubes and they last me for months of casual operation.

That radio is unmodified. It will run on 45 volts B+ but performance is 
down a little. Changing the bias - most notably on the screen grids - 
should bring performance back up. Audio power will not come back to the 
level of filling a gymnasium but I use cans anyway. I intend to build a 
radio with "battery tubes" like the 1T4 and 45 volts or less will be good.

The layout Sonny proposes should work fine.

73,

Bill  KU8H

On 12/31/2016 02:19 PM, Tracy wrote:
> ** Please do NOT cross-post messages when posting to HOMEBREW **
>
> I did it using a piece of pvc pipe with end caps and a spring at 
> either end. Worked well for what I needed then.
>
>
> Tracy
>
>
> On 12/31/2016 02:14 PM, howard holden wrote:
>> ** Please do NOT cross-post messages when posting to HOMEBREW **
>>
>> Hi Sonny,
>>
>> Interesting idea. Haven't done it, but I built a Doerle twinplex regen
>> back in 02 or 03, soldered 10ea  9V batteries in series. Now I don't use
>> the regen all that much, but that stack 13 or 14 years later still has
>> 76.4V no load, and 66V with a 2K (33 mA) load. Looks like the coin cells
>> are rated at 210 mAh, so that should run a regen just fine. But how
>> would you stack 15 to 30 of them mechanically?
>>
>> 73, Howie WB2AWQ/7
>>
>>
>> On 12/31/2016 9:51 AM, N1KHB--- via HomeBrew wrote:
>>> ** Please do NOT cross-post messages when posting to HOMEBREW **
>>>
>>> Hi all,
>>>      Has anyone tried stacking lithium coin cells  directly to each 
>>> other in
>>> order to create a 45V - 90V battery? It would require  a homebrew 
>>> holder of
>>> course.
>>>      Happy New Year!
>>>    Best,
>>> Sonny N1KHB
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-- 
bark less - wag more