[sdiy] Thomas Henry XR-2206 VCO Page Up

[Scott Stites]

Hi Anthony,

That statement was pretty much based on the spec sheets.

The TL072 flat just would not move things very far at all (perplexing to me), and the TL052 would work for the most part, but at a certain interval, would also start oscillating, which is equally perplexing.  The LF442 worked just fine, and we really didn't go beyond that in trying different op amps out.  

Come to find out, the selection of dual op amps I have around here is pretty abysmal, a situation I need to correct.  I have a whole spectrum of singles, but have somehow neglected to stock up on a good variety of duals.

Take care,
Scott


-----Original Message-----
>From: anthony <aankrom at bluemarble.net>
>Sent: Jun 29, 2006 4:30 PM
>To: Scott Stites <scottnoanh at peoplepc.com>, SDIY <synth-diy at dropmix.xs4all.nl>
>Subject: Re: [sdiy] Thomas Henry XR-2206 VCO Page Up
>
>I noticed it said that an LM1458 worked better than TL0X2's but not as well 
>as the LM442 - do you think different makes of the LM1458 might perform 
>differently? I think of all the op-amps I have more LM1458's than any from 
>several different manufacturer's and eras. I've found often that NEC 
>versions of parts work superbly - like the uPC4072 as opposed to the 
>TL072...
>
>Anyhoo this looks cool. I've been WAITING for this one!
>
>aa 
>
>


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