[sdiy] Tempcos

[damion at poweracoustics.org]

I'm not familiar with those, but looking at their site, do you mean the 
D-100F type?

Damion


On Dec 16, 2004, at 7:32 PM, harrybissell wrote:

> I don't know that the surface mount tempcos are that much better than 
> the thin film
> through hole types from Micro-ohm.  These are a little over $1 each in 
> hundreds... could you
> do a board for that ???
>
> H^) harry
>
> damion at poweracoustics.org wrote:
>
>> If you go to digikey.com and type CDCT-ND into the search box, you'll 
>> get a bunch of values that they have available.
>> They're all about 55 cents each with a minimum order of 10.
>>
>> They're very small, so I wouldn't recommend using them unless you're 
>> comfortable with your soldering skills.
>> You want them in physical contact with the transistors, so I 
>> carefully soldered very thin & VERY flexible leads to each side of 
>> the tempco.
>> Depending on your application, you then solder the ends of the leads 
>> to wherever they go in your circuit and carefully arrange them in 
>> contact with the appropriate transistors. I used a little gob of 
>> heatsink compound and held it all together with a very small ty-wrap.
>>
>> I actually wasn't too thrilled with this method, but it seemed to 
>> work ok.
>>
>> This has all gotten me to think about having a batch of miniature 
>> pcbs made.- with pads to mount one or two of these tiny tempcos and 
>> holes for wire leads. These could be so small, that I think they'd be 
>> cost effective, and maybe solve this tempco problem for a lot of 
>> us...
>>
>> Does any of this make sense?
>>
>> Damion
>>
>> On Dec 16, 2004, at 1:44 PM, Laxt57 at aol.com wrote:
>>
>>      Hi Damion
>>       Hey tell me about the surface mount tempcos. By that
>>      I mean where do you get them from and how to mount
>>      them?
>>       I hope to hear from Ray/Jay/Jason,but have not yet.
>>      Jeri
>>
>>
>> damion romero
>> damion at poweracoustics.org
>> http://poweracoustics.org
>> http://p-tapes.com
>
>
damion romero
damion at poweracoustics.org
http://poweracoustics.org
http://p-tapes.com