October 16, 20196 yr 2 minutes ago, Kerry said: The resistors on the digital attenuator are 1206. For the HV supplies the resistors are a mix of 1206 and 0805. Thanks! ...that means I´ill suffer
October 16, 20196 yr Here’s the back of the digital attenuator. This might make you suffer more Those chips need to be started with a hot air station.
October 16, 20196 yr Author 23 hours ago, lkong said: Is it too late? Please sign me up for: 2x GRHVxxx1x GRLV79xx1x GRLV78xx1x Main Board 1x miniT2 Not too late. I will add you to the GB.
October 18, 20196 yr Author We have another hitch and delay. I ordered the updated GRLV boards in September and they were sent out to me around Sep 18. The tracking info shows that the package cleared US customs on Sep. 30 and was en route to me via US post network. I have not received it yet and local post office confirmed that they do not have it either. I got in contact with the manufacture and they asked me to wait for a few more days before they can open an investigation. I am going to give it another week and if the package is till absent the manufacture will provide a coupon at that time for me to reorder the boards. Apologize for the further delay. Will provide another update in a week or so. Table updated.
October 21, 20196 yr On 10/2/2019 at 1:47 AM, Kerry said: PS I'm happy using the 7V reference. It requires less current which reduces heat and works well. I guess it’s R13 that sets the current. Which resistance do use and what current do you get?
October 21, 20196 yr Yes, R13 sets the current for the reference. I use 4.7K and it was giving me .92mA. Here's a shot of the positive rail... (Wow - It's been sitting out for a couple of weeks and got very dusty) Edited October 21, 20196 yr by Kerry
October 21, 20196 yr Thanks for info. I think I’m abandoning the idea of building an ordinary (through hole components) PSU now. Excellent achievements, Kerry.
October 23, 20196 yr Author On 10/18/2019 at 8:40 AM, mwl168 said: We have another hitch and delay. I ordered the updated GRLV boards in September and they were sent out to me around Sep 18. The tracking info shows that the package cleared US customs on Sep. 30 and was en route to me via US post network. I have not received it yet and local post office confirmed that they do not have it either. I got in contact with the manufacture and they asked me to wait for a few more days before they can open an investigation. I am going to give it another week and if the package is till absent the manufacture will provide a coupon at that time for me to reorder the boards. Apologize for the further delay. Will provide another update in a week or so. Table updated. The previous PCB order has been officially declared missing. The Fab house was kind enough to provide a refund coupon for me to reorder the PCB which I did. I used a different, higher-cost shipping option this time. With better luck this time I should receive the PCB in about 2 - 3 weeks. Edited October 23, 20196 yr by mwl168
December 14, 20196 yr Some good news on my side. I was able to successfully test the GR79xx board. Here's a picture of the GR7915 (left) next to the GR7815 micro (right). I've only tested against my DC shop supply but it performs as expected so far
January 5, 20206 yr Can I be added in for 4x of GRHV79xxx ? To miniaturized these stuff, @Kerry you are amazing !!
January 6, 20206 yr Author On 1/5/2020 at 5:05 AM, Whitigir said: Can I be added in for 4x of GRHV79xxx ? To miniaturized these stuff, @Kerry you are amazing !! To clarify, you are listed for 6 GRHV79xxx now. Do you like to add 4 more or change from 6x to 4x?
January 7, 20206 yr Hi, It's not to late to order a set for a T2 ? 2x GRHVxxx 1x GRLV78xx 1x GRLV79xx 1x main board 1x mini t2 board Thanks!
January 8, 20206 yr Author 16 hours ago, JoseA said: Hi, It's not to late to order a set for a T2 ? 2x GRHVxxx 1x GRLV78xx 1x GRLV79xx 1x main board 1x mini t2 board Thanks! Added.
January 8, 20206 yr On 1/6/2020 at 5:55 PM, mwl168 said: To clarify, you are listed for 6 GRHV79xxx now. Do you like to add 4 more or change from 6x to 4x? Oh, I didn’t check, sorry for that. Please keep it as is. I got so excited seeing Kerry pictures and the “greed in me” yelled “me want!”
January 8, 20206 yr Author No worries. This GB has dragged on for far too long. We should be back on track soon!
January 9, 20206 yr I just could not stay away from this thread.. Please add an order for the following for me -- and many thanks mwl168.. 2 x GRHVxxx 1 x GRLV78xx 1 x GRLV79xx 1 x main board looking forward to it (and no rush)..
January 9, 20206 yr Author 14 hours ago, mikeymad said: I just could not stay away from this thread.. Please add an order for the following for me -- and many thanks mwl168.. 2 x GRHVxxx 1 x GRLV78xx 1 x GRLV79xx 1 x main board looking forward to it (and no rush).. Added!
January 24, 20206 yr A full set, if not too late: 2 * GRHVxxx 1 * GRLV78xx 1 * GRLV79xx 1 * main board 1 * Mini T2 board Thank you!
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now