[sdiy] TI SN74LS624N, worth buying?

[Dan Snazelle]

I really recommend the part you become most aquainted with is the TLO72(or other opamps)

For me, once i had gotten aquainted with them, so many circuits started to make sense, as synthesizers use opamps for a wide variety of building blocks.


In the beggining when i had just started, i tried buying 8038's, 566 vcos,  and xr-2206's but once i understood a bit about opamps, i forgot all about those chips as i could easily build lfos and vcos without them.



40106's are awesome as are 4046's and 4017's and 4015's and 4025's


Good luck!

Sent from my iPhone

On Nov 10, 2011, at 12:32 PM, Bob K <farfisa5 at gmail.com> wrote:

> Thanks Steve.
> 
> I'm that kind of person that when I get involved in something new, I
> go all-in and buy waaaay too much stuff.  Like the beginner jogger
> that purchases a pair of $200 running shoes even though a $40 pair
> will suffice.
> 
> I can't rationalize purchasing original SSM or Curtis chips because,
> well, I can't afford them.  So don't worry about me stockpiling those
> things.
> 
> Do I have grandiose ideas of building things that I probably will
> never be able to even understand?  Sure.  But, hey, that's why I got
> into it.
> 
> I've learned a ton so far just from these two months I've been on this
> list, so I thank you all very much.
> 
> On Thu, Nov 10, 2011 at 1:48 AM, Steve Lenham <steve at bendentech.co.uk> wrote:
>> That's a bit harsh - Bob hasn't mentioned anything which is
>> out-of-production. It's not like he is planning to test the breakdown
>> voltage of SAD1024s or make a sculpture out of SSM2040s.
>> 
>> His posts have been making me smile because I can still distantly remember
>> browsing the Farnell catalogue with exactly the same sense of excitement at
>> the age of fifteen or so and marvelling at the world of components which
>> were out there.
>> 
>> Keep it up Bob - the world will NOT run out of 2N3904s any time soon and,
>> even if it does, we need enthusiastic engineers more than we need any
>> particular part!
>> 
>> Steve L.
>> 
>> On 10/11/2011 06:58, Eric Wood wrote:
>>> 
>>> If that is what you need to hear then I will say it, I guess. I
>>> understand the wanting and willingness to learn about these things
>>> and support your striving to do so. But, am I the only person that
>>> thinks buying hard to find chips for the sake of having them, and
>>> having zero idea what you may eventually do with them is a less than
>>> noble endeavor? There a people out there with machines they have
>>> invested thousands of dollars on that may or may not need these
>>> components to keep alive! Really guys? Let's experiment with stuff
>>> that is not unavailable! Please?
>>> 
>>> Sent from my Cerebellum!!!
>>> 
>>> On Nov 8, 2011, at 3:06 PM, Bob K<farfisa5 at gmail.com>  wrote:
>>> 
>>>> Thanks for the advice Tom, John, and everybody else!
>>>> 
>>>> The Coolaudio V2164 chips from Mammoth will be ordered soon.
>>>> 
>>>> I also found some stuff musicfromouterspace.com.  Whew, does that
>>>> guy have fun parts and a shitload of information!
>>>> 
>>>> He carries packages of 10 NJM13700D (LM13700) chips for $16.
>>>> 
>>>> I also picked up a set of Matched 2N3904s And Tempco while there
>>>> ($12).  Don't know what the hell I'll do with it but, hey, I might
>>>> as well get them while available.
>>>> 
>>>> TL074?  Great..... more stuff to buy.
>>>> 
>>>> I've officially taken over half of my girlfriend's bookcase with
>>>> electronic parts.  It used to be four shelves of yarn, now it's
>>>> two shelves of yarn and two shelves of parts.
>>>> 
>>>> I'm slowly winning the battle until I hear that infamous, "When
>>>> the hell are you actually going to make something?!" question.
>>>> 
>>>> Thanks again!
>>>> 
>>>> -Bob
>>>> 
>>>> On Tue, Nov 8, 2011 at 12:46 PM, Tom
>>>> Wiltshire<tom at electricdruid.net>  wrote:
>>>>> 
>>>>> I completely agree with John. You can build an entire synth with
>>>>> this chip alone. Ok, maybe you need an op-amp too, but a TL074
>>>>> would do it.
>>>>> 
>>>>> And irritatingly, as soon as we DIYers find a decent chip, they
>>>>> take it off us. Last time buy on Analog Devices website. The
>>>>> Coolaudio V2164 clone is still available though (Small bear,
>>>>> Mammoth, others I'm sure), and you might yet find some 'original'
>>>>> analog devices SSM2164s lurking about.
>>>>> 
>>>>> Buy 'em now, then stick them on ebay in a years time at $25 a pop
>>>>> - after all, they're original analog SSM chips, right? That's
>>>>> what everyone else would do!
>>>>> 
>>>>> T.
>>>>> 
>>>>> On 8 Nov 2011, at 17:48, blacet at blacet.com wrote:
>>>>> 
>>>>>> This may have already been mentioned but the SSM2164 is
>>>>>> arguably the most interesting IC for general electronic music
>>>>>> use.  Althought it is intended as a VCA, the voltage control
>>>>>> blocks find uses in LFOs, filters, VCOs etc. This is one IC all
>>>>>> DIYers should become experts in the use of!
>>>>>> 
>>>>>> _______________________________________________ Synth-diy
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