Yes, see what you mean, looks very misleading, as the Electro Optical Characteristics say that with the max led current of 40ma you should get an on resistance of 1.5ohm and then the off resistance is 10megohm.
Then the chart shows it different the lowest being again 40ma led current but the resistance is only at best 60ohm.
Can't trust anything from Asia. It's all double Dutch to me.
Stick with Silonex.
ActuallyPerkin Elmer HQ is American , can't trust those Yanks either.
Cheers George
Then the chart shows it different the lowest being again 40ma led current but the resistance is only at best 60ohm.
Can't trust anything from Asia. It's all double Dutch to me.
Stick with Silonex.
ActuallyPerkin Elmer HQ is American , can't trust those Yanks either.
Cheers George
There are a few errors on the datasheet for the VTL5C3.
The 1.5 ohm should be 1.5k instead.
Pity, I would have wanted to use the 5C3 as well because it is of material type 3.
So the next best thing as far as I can tell is VTL5C2, material type 0.
George, I thought Silonex was also Yanks ?
: )
Patrick
The 1.5 ohm should be 1.5k instead.
Pity, I would have wanted to use the 5C3 as well because it is of material type 3.
So the next best thing as far as I can tell is VTL5C2, material type 0.
George, I thought Silonex was also Yanks ?
: )
Patrick
Attachments
Nuh, Silonex is Canadian, and yes the next best in Perkin would be the VTL5C2 but that 200Ohm min is a worry for having a quite min volume.
Wouldn't it be nice if the VTL5C3/2 (a dual in one package with one led, wow!!) had a min of around 50ohm instead of 700ohm, NO BLOODY MATCHING, but you could use it as your not worried about min volume from previous a post.
Cheers George
Wouldn't it be nice if the VTL5C3/2 (a dual in one package with one led, wow!!) had a min of around 50ohm instead of 700ohm, NO BLOODY MATCHING, but you could use it as your not worried about min volume from previous a post.
Cheers George
I need for each channel a single LDR with 200ohm min., so either VTL5C2 or Silonex.
Sorry, of course Silonex is Canadian.
Allied is American, but I know you don't trust them either.
: )
Patrick
Sorry, of course Silonex is Canadian.
Allied is American, but I know you don't trust them either.
: )
Patrick
PE's optoelectronics office is in Canada, so their devices might be Canadian made, cough.
I did notice that my test results match the data given on the resistance/current graph.
I did notice that my test results match the data given on the resistance/current graph.
I have a commercial account with Allied and would be willing to purchase a quantity and ship them to Europe. Here are the limits. I would only do one bulk purchase and one shipment. Those wanting the units would be responsible for coordinating the amount, payment and distribution once they get to the designee. I just have to many irons in the fire at this time to coordinate and do the distribution myself.
OK...so another Lurker jumps in to join the group buy....how do you do one of those voting threads to determine the numbers?
Thanks for the offer Badge.
Cheers
Lee
Thanks for the offer Badge.
Cheers
Lee
Power Supply Options
George,
Did you try other options for suppling the power? I have an unused battery pack with +13 volts to power it with if this really is an improvement. Will need to add a switch and not run 24/7 like the wallwart.
I am shut down for right now, my inlaws are here for a while. Hope to start building again after first of the year. Got some nice projects yet to finish and others to start.
This project was one of the big surprises this year. Low expectations, high return on time and money spent to build.
I agree on the LDR's. sorted versus sorted. If the unsorted are spec'ed with a letter like the sorted, these will end up being the same as sorted. The range on mine was very large and these were sorted all with the same letter for current. But it allowed for several circuits to be built, just closer matching was used for the series and shunt elements so that channel tracking was maintained. I was less concerned about resistance matching of series vs shunt tapers. This made it easier, just needing to match two pairs exactly and not a quad for a stereo SE attenuator.
I matched up quads for my balanced version, but never installed in my differential input line stage. Another one for next year.
George
George,
Did you try other options for suppling the power? I have an unused battery pack with +13 volts to power it with if this really is an improvement. Will need to add a switch and not run 24/7 like the wallwart.
I am shut down for right now, my inlaws are here for a while. Hope to start building again after first of the year. Got some nice projects yet to finish and others to start.
This project was one of the big surprises this year. Low expectations, high return on time and money spent to build.
I agree on the LDR's. sorted versus sorted. If the unsorted are spec'ed with a letter like the sorted, these will end up being the same as sorted. The range on mine was very large and these were sorted all with the same letter for current. But it allowed for several circuits to be built, just closer matching was used for the series and shunt elements so that channel tracking was maintained. I was less concerned about resistance matching of series vs shunt tapers. This made it easier, just needing to match two pairs exactly and not a quad for a stereo SE attenuator.
I matched up quads for my balanced version, but never installed in my differential input line stage. Another one for next year.
George
I heard back from Perkins Elmer who admitted the 1.5 ohms specification on the VTL-5C3 was a typo .... should be 1.5K ohms.
If this is a serious attempt at a group buy, I'll set up a wiki, as I might well be interested in a few. 😉
Which lightspeed will the group buy be getting? Keen to get 24+ if it is NSL-32SR2 at a reasonabe price. Will get more if the price is 'good'.
Sam
Sam
The 24 remaining pieces of NSL32SR2S at Allied someone has cleaned off.
The NSL32SR2 or SR3 (not sorted) costs US$1.86 at Allied, without much discount for 100 pcs. By the time you pay transport, import tax, etc., you might as well order from RS or Farnell. Both have the unsorted type.
So in my opinion, Group Buy would only make sense if :
a) quantity is large enough (say >250);
b) we can order the Sorted type from Allied; and/or
c) someone is prepared to do the matching, which is not an easy task as you need to match over range (not single point).
I just ordered 25 pcs SR3 from RS, but if someone is prepared to organise all the above, then you can count me in for 20 SR2S's.
Patrick
The NSL32SR2 or SR3 (not sorted) costs US$1.86 at Allied, without much discount for 100 pcs. By the time you pay transport, import tax, etc., you might as well order from RS or Farnell. Both have the unsorted type.
So in my opinion, Group Buy would only make sense if :
a) quantity is large enough (say >250);
b) we can order the Sorted type from Allied; and/or
c) someone is prepared to do the matching, which is not an easy task as you need to match over range (not single point).
I just ordered 25 pcs SR3 from RS, but if someone is prepared to organise all the above, then you can count me in for 20 SR2S's.
Patrick
RS also list the sorted SR2's, stock number 2508662482 as an extended range item with a lead time of 5 - 10 days. For 250 + they're £1.33 ea. + VAT.
> they're £1.33 ea. + VAT.
Or £1.45 for 50+, £1.41 for 100+.
Anyone in the UK has an account with them an dwant to volunteer ?
If yes, please open a new thread at the Group Buy Forum.
(RS Germany is more expensive, and I think most interested parties are in the UK).
Patrick
Or £1.45 for 50+, £1.41 for 100+.
Anyone in the UK has an account with them an dwant to volunteer ?
If yes, please open a new thread at the Group Buy Forum.
(RS Germany is more expensive, and I think most interested parties are in the UK).
Patrick
Just checked the RS NZ price and they are NZ$6.53 for 100. Which is GBP2.28 or US$4.2 A lot more expensive than anywhere else.
Sam
Sam
You don't actually need an account to order from RS in the UK. Anyone can buy from them if you register via their website.
I presumed that after registration, you get a customer number. That was what I meant as account.
Patrick
Patrick
European members might want to check if the version of the Silonex NSL32 Banzaieffects has in stock could be used.
http://banzaieffects.com/Optocouplers-c-311.html
...no, I do not have any connection to they're company other that I'm a regular customer 😉
HansR
http://banzaieffects.com/Optocouplers-c-311.html
...no, I do not have any connection to they're company other that I'm a regular customer 😉
HansR