Mouser and Digi-Key are similar.
They both have websites in other Countries and both make it look like they are supplying from within that Country.
The the problems and costs of export/import come along to bite the hand of the feeder/customer.
Both make promises to "this customer" that they seem they can't achieve.
They both have websites in other Countries and both make it look like they are supplying from within that Country.
The the problems and costs of export/import come along to bite the hand of the feeder/customer.
Both make promises to "this customer" that they seem they can't achieve.
I need to order my parts soon, as I will be getting a UK sourced transformer should only be the 'light' parts so lets see what the total order cost comes to. If there is still large stealage on the shipping/duty then it might be worth while to create a 'eurobom'.
We have Farnell & CPC and Rapid and RS and etc.
But except for special offers they are generally more expensive than some of the "big names" in component supply.
I have bought some tremendous special offers, particularly "non-ROHS", that became available.
But except for special offers they are generally more expensive than some of the "big names" in component supply.
I have bought some tremendous special offers, particularly "non-ROHS", that became available.
The Modulus-86 Design Documentation does contain a Digikey BOM. Does anybody know for sure if Digikey ships from Europe for their European sites?
If I'm to create a "EuroBOM", I'd probably select RS or Farnell. I've dealt with those guys in the past (when I lived in Europe). While they do tend to be slightly on the expensive side, they do maintain a good stock of parts and you can usually get what you need from those distis.
~Tom
If I'm to create a "EuroBOM", I'd probably select RS or Farnell. I've dealt with those guys in the past (when I lived in Europe). While they do tend to be slightly on the expensive side, they do maintain a good stock of parts and you can usually get what you need from those distis.
~Tom
Neither Digi-Key nor Mouser have a UK distribution. Everything is done as an export/import to the UK.
If they had an EU distribution then that would avoid all the import/export problems since there are no trade barriers within the EU.
Neither Mouser nor Digi-Key have used any EU distribution for my deliveries. All came from the USA.
If they had an EU distribution then that would avoid all the import/export problems since there are no trade barriers within the EU.
Neither Mouser nor Digi-Key have used any EU distribution for my deliveries. All came from the USA.
One of the Fedex options @ Mouser is equivalent to buying from the EU.
The products are shipped from the US but go via an EU-based warehouse, so not only do you avoid import taxes, but you can also get VAT exemption when using an EU-registered VAT number.
The products are shipped from the US but go via an EU-based warehouse, so not only do you avoid import taxes, but you can also get VAT exemption when using an EU-registered VAT number.
So any significant preference between RS and Farnell? Is Conrad commonly used across Europe or is that more of a German thing?
I'm one of these weird people who prefer to do things right the first time, so if I'm to make a EuroBOM, I might as well make it useful to my builders... 🙂
Is this the Conrad everybody is talking about? http://www.conrad.com/ce/en/category/SHOP_B2C_TAB_COMPONENTS/Electronic-Components It looks more like a hobby store than an electronics distributor. I seem to recall them having a broader selection of parts, including a comprehensive selection of heat sinks. Am I looking at the right thing here?
~Tom
I'm one of these weird people who prefer to do things right the first time, so if I'm to make a EuroBOM, I might as well make it useful to my builders... 🙂
Is this the Conrad everybody is talking about? http://www.conrad.com/ce/en/category/SHOP_B2C_TAB_COMPONENTS/Electronic-Components It looks more like a hobby store than an electronics distributor. I seem to recall them having a broader selection of parts, including a comprehensive selection of heat sinks. Am I looking at the right thing here?
~Tom
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Never heard of Conrad so must be a DE thing.
I'm still not sure Mouser is a problem. Let me spot check some prices tonight
I'm still not sure Mouser is a problem. Let me spot check some prices tonight
hi there, Conrad is great when you want to by some lab equipments, solder iron or cables or even RC cars and they also have some very few electronic components.
Mouser is best together with Farnell. True that their is a specific delivery mode for avoiding the import taxes in EU, but you have to select it right and cannot remember. Something like "duty paid" or so. then, no surpise, what you pay is what you get. I confirm this.
Mouser is best together with Farnell. True that their is a specific delivery mode for avoiding the import taxes in EU, but you have to select it right and cannot remember. Something like "duty paid" or so. then, no surpise, what you pay is what you get. I confirm this.
OK, I wasn't going to order all the parts yet, but in order to check decided to order the parts for 4 boards this evening. The default option on uk.mouser.com is that they pay duty, which I selected and so, with the free shipping came to £162, so £40 per board. At that price really not worth looking to anyone else IMO.
The process I would go through is doing simulation first. Looking for differences between the phase and amplitude data. I think this is going to be interesting. I am hoping to find a solution best for a good full range driver load. But comparison against the MyRef would need to be in another two way speaker just because of logistics. Since I have not touched the MyRef for a while, I am not sure what to expect. In the past, the two way speaker was better than the active speaker, but lots have changed since. So there are actually 3 combinations are in the comparison lot. Why this is interesting is because the other two had never considered distortion figures as a goal, the MyRef focused on minimising reactive interaction from the driver, and the Chip amp focused on tuning ground interaction and current paths as well as matching a specific driver response. Both the MyRef and the Modulus-86 use a topology similar to what is often used in control systems with an error reducing integrator except that one uses current source drive and the other uses a voltage source drive.
Not going to post data in this thread though, only listening impressions. It may take a while to get things together though.
Cool. Thanks for sharing. Sounds like I should put a note in the design doc to ensure that option is checked before forking over cash to Mouser.
~Tom
Attachments
Speaking of parts: There was an error in the Mouser BOM. The quantity for C7 and C8 was set to 1. Should have been 2. That has been corrected now. Also, C9 had been obsoleted by the manufacturer, so I found a substitute.
Dominique: If you need me to toss a couple of caps in the mail for you, send me a PM (or email - preferred). My treat. I would hate to see you pay $100 to ship two ceramic caps.
~Tom
Dominique: If you need me to toss a couple of caps in the mail for you, send me a PM (or email - preferred). My treat. I would hate to see you pay $100 to ship two ceramic caps.
~Tom
Dear Tom,
Thank you for the offer! It is not 100 but 25 USD for a single component... I have received the parts (expensive, but fast!). I plan to check what I got against the BOM today and I will come back to you later.
Cheers,
Dominique
So how would this amp sound compared to a Pass class A amp? Im sure it measures better but what would the difference in sound be? Im intrigued by both!
I doubt anyone here can tell you that. You would have to compare the 2 yourself if you want a subjective opinion.
Hi Tom,
LM3886 is class AB-A, that means it's works in class A at low level (I read about 1 watt), but with Modulus, it should be more ?
Hi Dominique,
About Mouser, I ordered some components last month, shipping was free for 65 euros like Bill said. My order was at mouser.fr and box came from Germany !
Phil.
The LM3886 is operating in Class AB with a quiescent current of approximately 50 mA. Assuming all 50 mA flow in the output stage, this means the LM3886 would go from pure Class A to Class AB operation at about 10 mW. Note that even with my relatively inefficient speakers (87 dB/W*m) that still results in about 70 dB SPL at the listening position... That's comfortably loud.
The Modulus-86 does not change this. It does, however, perform error correction on the LM3886 to drive the distortion products to pretty darn close to zero (hence, the 2 ppm THD measured).
~Tom