Thanks!!!
Use USPS tracking for example.
Edit: My shipment for example is already "Admitted" and "On the way"
Use USPS tracking for example.
Edit: My shipment for example is already "Admitted" and "On the way"
Last edited:
As per the global postal standard, the letters at the end indicate the country of origin. Some postal services have data sharing agreements but if not, go back to base.
In this case HK or the Hong Kong postal service. The Interweb should take care of the rest.
In this case HK or the Hong Kong postal service. The Interweb should take care of the rest.
Hongkong Post - Track and Trace
Lynn, my experience with China and Hong Kong to the USA is that the USPS web site does not show the tracking until the item is presented to a USPS facility. Until then, you can follow the shipping progress on the Hong Kong web site.
At some point, the Hong Kong Post tracking web site will show that the item was transferred to the USPS. It will take some days for that to happen.
Patrick, thank you for doing this. It was incredibly generous of you and is deeply appreciated.
Lynn, my experience with China and Hong Kong to the USA is that the USPS web site does not show the tracking until the item is presented to a USPS facility. Until then, you can follow the shipping progress on the Hong Kong web site.
At some point, the Hong Kong Post tracking web site will show that the item was transferred to the USPS. It will take some days for that to happen.
Patrick, thank you for doing this. It was incredibly generous of you and is deeply appreciated.
Just wish to inform that the payments from Quantensprung and Soundslave have not yet been released.
Please kindly release by selecting shipment confirmation button in PP.
Thanks,
Patrick
Please kindly release by selecting shipment confirmation button in PP.
Thanks,
Patrick
Hi Patrick and Team,
I received mine today. Thank you for making these available to us, your hard work is appreciated.
-Federico
I received mine today. Thank you for making these available to us, your hard work is appreciated.
-Federico
Received the packet. Everything looks good. Is it possible to get the matching details for the Q52?
Thank you very much.
Thank you very much.
Hi Patrick,
well received the packet, thanks!
Matching details would be nice also for me (Q16, Q17).
well received the packet, thanks!
Matching details would be nice also for me (Q16, Q17).
Glad to know they arrived.
As to matching data :
We do not publish matching data. We never have for over a decade, we never will.
It is invitation for unnecessary discussions about our technical capability, our integrity and fairness.
Those remarks against us we resent. Just look at this thread before and after the final allocations.
We know what we can and what we have done. We have a clear conscience.
On top of that, publishing average Vgs for each set will cost me one hour extra work.
But it is of next to no value to you, as the value will change at different temperature, Vds, and Id.
On top of that, in the J2 type circuit, the bias current depends e.g. on the optocoupler and those resistors around it.
You do not see anyone discussing about their matching.
So what use is the Vgs data when you do not know the exact bias current up front.
Sorry to disappoint,
Patrick
As to matching data :
We do not publish matching data. We never have for over a decade, we never will.
It is invitation for unnecessary discussions about our technical capability, our integrity and fairness.
Those remarks against us we resent. Just look at this thread before and after the final allocations.
We know what we can and what we have done. We have a clear conscience.
On top of that, publishing average Vgs for each set will cost me one hour extra work.
But it is of next to no value to you, as the value will change at different temperature, Vds, and Id.
On top of that, in the J2 type circuit, the bias current depends e.g. on the optocoupler and those resistors around it.
You do not see anyone discussing about their matching.
So what use is the Vgs data when you do not know the exact bias current up front.
Sorry to disappoint,
Patrick
My parts arrived today. Very happy to have these. Thank you for sharing from your stash.
I have purchased some Toshiba 2SK2837 parts and have tested them for Vgs and gain at 950 mA bias. It will be interesting to see if I can make one these work with one of the SS parts.
Thanks again.
I have purchased some Toshiba 2SK2837 parts and have tested them for Vgs and gain at 950 mA bias. It will be interesting to see if I can make one these work with one of the SS parts.
Thanks again.
Roger that. Will do. I have a dual power supply with current limit.
I am reading your J2 clone posts this evening. Your 2SK3497 schematic definitely is calling me. I have a few 5 kilo heatsinks from Heatsinks USA.
It will be interesting woofertester to see how you go with the Toshiba 2SK2837 part, which is now obsolete. However Toshiba has a new direct replacement for it - the TK20J50D(F) rated at 280watt power dissipation for those interested.