[sdiy] big Tempco order... interested ?

[Scott Gravenhorst]

There is always the Ian Fritz Dial-a-tempco method which can deal with
this.

As a side note, (and don't throw rotten food at me...) I use linear
pitch control voltages, but it occurred to me that I might be able to
use expo for certain things.  I wondered, at least for my own purposes
why I would need an expo current converter for each VCO.  Well, the
fact is, I don't.  More than one VCO can be operated and very simply
interval controlled if the expo input voltage is converted to a linear
output voltage and then used to control as many linear VCOs as you
like, without the need for temperature compensation for each VCO.  If
I go this route, I will most probably use Ian's method so that I don't
have to fight with manufacturers to dial up an exact compensation
value (that apparently won't be what it says it is in the first place).


"john mahoney" <jmahoney at gate.net> wrote:
>> I just wonder if their 3500ppm
>> ends up being in the range of 3300, what their "real" 3300 does...
>
>That is odd, isn't it? Especially given the 1% tolerance rating.
>--
>john
>
>
>----- Original Message ----- 
>From: "Jay" <jay at denonville.com>
>To: "S-DIY" <synth-diy at dropmix.xs4all.nl>
>Sent: Friday, October 15, 2004 12:21 PM
>Subject: Re: [sdiy] big Tempco order... interested ?
>
>
>> "We are pleased to quote as follows:
>>
>> PT146 1K ohm 1%
>>           @25 C
>>           TC 3500 ppm
>> 100 pcs.@$2.40 ea.
>> 500 pcs.@$2.00 ea.
>> 1000 pcs.@$1.79 ea.
>>
>> PT146 1K ohm 1%
>>          @25 C
>>          TC 3300 ppm
>> 100 pcs.@$3.50 ea.
>> 500 pcs.@$3.10 ea.
>> 1000 pcs.@$2.57 ea."
>>
>> So they can do customs for a buck more each. I just wonder if their
>3500ppm
>> ends up being in the range of 3300, what their "real" 3300 does...
>>
>

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