fake or Real?
Hi Wim, What they write on the order bill is meaningless. MBR stands for multiple brand? No Toshiba for sure.😕
BTW can you order directly from Nedis? I was under the impression that was only a privilege for companies or OEMs?
wim said:
Hi Wim, What they write on the order bill is meaningless. MBR stands for multiple brand? No Toshiba for sure.😕
BTW can you order directly from Nedis? I was under the impression that was only a privilege for companies or OEMs?
Elso,
Were your transistor says "A970 BL36", mine says "CSA970"
Were your transistor says "C2240 BL31", mine says "C2240 GR 4B"
What do you think?
Were your transistor says "A970 BL36", mine says "CSA970"
Were your transistor says "C2240 BL31", mine says "C2240 GR 4B"
What do you think?
Elso,
I was thinking about your post.
Iif you where a criminal, schould you imitate a very, very cheep, common transistor that you can buy everywere??
Not me. I shout imitate expensive and/or obsolete devices, wich you can hardly can get.
Whats your opinion?
I was thinking about your post.
Iif you where a criminal, schould you imitate a very, very cheep, common transistor that you can buy everywere??
Not me. I shout imitate expensive and/or obsolete devices, wich you can hardly can get.
Whats your opinion?
Re: Nedis
I'll second this.
Elso Kwak said:
Hi Wim, I don't want to spoil the fun but Nedis is notorious for delevering faked parts and second sourced parts......Or even no-name parts.
BEWARE!
I'll second this.
Hi All-
I am currently getting a new quote for the PCB with two scored sections containing the output boards. So each main PCB will have the 2 associated output boards. Hopefully the cost can kept in the < $10 range.
Will let every one know shortly.
Thanks again Jan for the excellent work.
I am currently getting a new quote for the PCB with two scored sections containing the output boards. So each main PCB will have the 2 associated output boards. Hopefully the cost can kept in the < $10 range.
Will let every one know shortly.
Thanks again Jan for the excellent work.
Hi Jan-
Do you by chance have the gerber files for the output boards?
I am seeing if the PCB company can add them to the main PCB via 2 scored sections now.
Thanks in adavance,
Troy
Do you by chance have the gerber files for the output boards?
I am seeing if the PCB company can add them to the main PCB via 2 scored sections now.
Thanks in adavance,
Troy
rabstg
Hi,
Sorry but I haven't generated the Gerbers yet, as I was waiting for some respons to the layout here 😉
I will then just make miner refinements, and publish the Gerbers 😀
I'll let you all know....
Hi,
Sorry but I haven't generated the Gerbers yet, as I was waiting for some respons to the layout here 😉
I will then just make miner refinements, and publish the Gerbers 😀
I'll let you all know....
wiki?
is anyone signed up to do the wiki?
I'm going to read about it, I've no idea how it's done, so I'm not promiding anything...
Stuart
is anyone signed up to do the wiki?
I'm going to read about it, I've no idea how it's done, so I'm not promiding anything...
Stuart
Hi Stuart-
As of now the wiki has not been created.
We are still awaiting the Gerber files for the output board. I will then get an estimate with the one main board and 2 output boards manufactured on the same PCB.
Once I have the firm price for the boards I will start accepting orders and have the PCB's made.
PS- If anyone knows how to create the wiki I would be very appreciative. I can edit it, but have not figured out how to create one yet. I will buy the creator a free set of boards if anyone is interested.
As of now the wiki has not been created.
We are still awaiting the Gerber files for the output board. I will then get an estimate with the one main board and 2 output boards manufactured on the same PCB.
Once I have the firm price for the boards I will start accepting orders and have the PCB's made.
PS- If anyone knows how to create the wiki I would be very appreciative. I can edit it, but have not figured out how to create one yet. I will buy the creator a free set of boards if anyone is interested.
Sorry for the delay with the Gerbers.... 🙁
Sitting at my labtop right now, so I will make and post them tomorrow when I'm back on my one of my statinary PC's😉
Sitting at my labtop right now, so I will make and post them tomorrow when I'm back on my one of my statinary PC's😉
Hey Jan-
It's the holiday season and we all have a million things going on. But I think people should remain in the holiday spirit and be patient.
The boards will be delivered in January. Whether it is the first week or third week is not as important as getting a good product at a good price. Besides, I want a product that will last for a while.
As the saying goes:
1. Good quality
2. Inexpensive
3. Fast
Only 2 of those are available at a time.
Fast and inexpensive = crap
Inexpensive and good quality = time for proper engineering
Good quality and fast service = will cost a fortune
It's the holiday season and we all have a million things going on. But I think people should remain in the holiday spirit and be patient.
The boards will be delivered in January. Whether it is the first week or third week is not as important as getting a good product at a good price. Besides, I want a product that will last for a while.
As the saying goes:
1. Good quality
2. Inexpensive
3. Fast
Only 2 of those are available at a time.
Fast and inexpensive = crap
Inexpensive and good quality = time for proper engineering
Good quality and fast service = will cost a fortune
Planning the PSU of the Krell-clone i was thinking of project 15 from Rod Elliot's site (capacitance multiplier supply).
I build it earlyer for another DIY-amp, and it work fine. Is it an idee for the Krell-clone??
If not, on pictures of the original PSU of the Krell i see capacitors 70V.
If i use toroids of 30-0-30 V, then 63V capacitors are good I.M. Is that good??
I build it earlyer for another DIY-amp, and it work fine. Is it an idee for the Krell-clone??
If not, on pictures of the original PSU of the Krell i see capacitors 70V.
If i use toroids of 30-0-30 V, then 63V capacitors are good I.M. Is that good??
Troy 😉
Yes! The holiday season compared with normal work does slow things down on the diy-projects
However I have reserved this weekend to finish and publish 3 types of output boards 😉
Yes! The holiday season compared with normal work does slow things down on the diy-projects
However I have reserved this weekend to finish and publish 3 types of output boards 😉
wim said:
Wim,
the maximum voltage on the primary side of the transformer is allowed to be 10% higher(NL).
http://www.gpx.nl/pdf/netcode.pdf
With a 30Vac transformer the maximum will be 33 Vac.
Added is the regulation, for a 300VA toroid transformer regulation is 5%.
33 Vac + 5% = 34.65 Vac.
Top voltage + 1.41 = 49 Vac.
After the rectifier : 49 - 0.7 = 48.3 Vdc.
You can even use 50 Volt caps !
The voltage rating of capacitors have a spread too, 63 V rated caps may collapse at 60 Volts.
Usually only a small fraction is sub rating, the majority withstand higher voltage.
Apart from the safety margin, it is pressumed that an operation margin enhances durability, some disagree.
On the production side i can imagine that a designer uses a wide safety margin as voltage variations may be much larger in some countries.
Thanks Jacco, for your clear explanation. Reading your post i think i go for safety, and take 80V types.
By the way, i bought second hand 2 unused 800VA 30-0-30V toroids for this project, and i am searching for the caps now.
Again, thanks for your quick reaction.
By the way, i bought second hand 2 unused 800VA 30-0-30V toroids for this project, and i am searching for the caps now.
Again, thanks for your quick reaction.
wim said:
Now, that is a good deal !
Yesterday i acquired myself 2 unused sample 600VA toroids in Wassenaar, on the Rijksstraatweg, just under your nose
Succes this weekend with the Bernie parade.
I live 100 meter from the route van Bernie! (Ypenburg).
What do you mean with "sample"? did you get them for free????
What do you mean with "sample"? did you get them for free????
Companies often order sample products, even transformers.
The person i bought the toroids from had ordered them with the idea of making powersupplies.
The toroids were custom wound, according to him pretty expensive.
The idea never reached a production phase, he is mainly in the telecom cable business now, he sometimes cleanes his storeroom at a friendly rate.
The person i bought the toroids from had ordered them with the idea of making powersupplies.
The toroids were custom wound, according to him pretty expensive.
The idea never reached a production phase, he is mainly in the telecom cable business now, he sometimes cleanes his storeroom at a friendly rate.