Hi Rich,
Well, you and the others inspired me, and I just ordered all the
parts for the WD7S board to completely overhaul the Titan's
rectifier/filter system. I went with Newark, though, as I could find
caps with better lifetime specs, low ESR, etc, and still at hugely
better prices than the OEM Mallory/CD caps. I love the folks at Mouser
and Digikey, but I tend to be able to find everything at Newark, while
with the others I ended up having to get some bits here and other pieces
there.
Thanks again for the great feedback!
-Pete AD4L
On 11/25/2011 4:44 PM, Rich Hallman - N7TR wrote:
> I have six Titan 425's here and most Power Supplies have been upgraded
> with the WD7S PS Board. These work great and only takes a small bit of
> moving some parts around in the PS to make these work.
>
> http://home.earthlink.net/~wd7s/hv-2.htm
>
> Some pics of the board in the PS enclosure...
> http://hamradiomarket.com/articles/Titan%20P%20Hybrid.htm
>
>
> 73 Rich N7TR
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
> On Behalf Of Pete Soper
> Sent: Thursday, November 24, 2011 11:07 AM
> To: amps@contesting.com
> Subject: Re: [Amps] best deal for Mallory caps?
>
> Thanks to KM1H and K0UYA for the advice. The form factor of the stock
> caps for the Titan is the killer: very long and very narrow compared to
> the "usual" for this capacity and voltage. I'm confident I could make a
> safe outboard "capacitor box" bolted to the side of the current PS to
> allow more available/affordable capacitors, but I have to weigh all the
> factors, and $29 each at Newark may be a better choice. I don't know if
> 270uf/8 is sufficient vs 400uf/8 for an amp that can put out 1.5kw with
> the figurative pinky finger of one hand. So I'm sure I want to stay with
> 400uf per capacitor, while also paying close attention to temperature
> and rated life specs, ESR, etc. This is why I asked about a better deal
> for *the specific Mallory (CD) capacitors* before exploring unknown
> territory.
>
> The Digikey price for these caps is $46 each, if they had them in stock,
> which they don't. Mouser does have 15 in stock at $81 each. Other
> suppliers I've found all over the planet have prices around $35 or more.
>
> Anyway, I wanted to make sure there isn't a golden supplier hiding out.
>
> Regards,
> Pete AD4L
>
>
> On 11/24/2011 11:26 AM, Carl wrote:
>> Ameritron has a good price on their caps which are 270uF which with 8
>> is sufficient for good filtering. The new ones are half the height but
>
>> still the computer grade type...about $13 iffn I remember.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message ----- From: "Pete Soper" <pete@soper.us>
>> To: <amps@contesting.com>
>> Sent: Wednesday, November 23, 2011 3:53 PM
>> Subject: [Amps] best deal for Mallory caps?
>>
>>
>>> I need several replacement caps for my Ten-Tec Titan 725, Mallory
>>> CGS401T450R5L (long/slim 400mf 450vdc/85c). Newark wants $29 each. Is
>
>>> there a better deal available?
>>>
>>> Thanks,
>>> Pete AD4L
>>>
>>> _______________________________________________
>>> Amps mailing list
>>> Amps@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
>>>
>>> -----
>>> No virus found in this message.
>>> Checked by AVG - www.avg.com
>>> Version: 10.0.1411 / Virus Database: 2092/4036 - Release Date:
>>> 11/24/11
>>>
>>
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|