Mark Johnson's VRDN Bipolar PS for Line Level +/-11 - 20V Circuits

[Chrisr3521]

Any boards left for delivery to the UK?

 

[nautibuoy]

nautibuoy and NealJ: I have you covered.


14 boards uncommitted in EU when they arrive.


Best,
Mike

Hi Mike. Is this still happening?

 

[1883]

Folks:

I just finished a very successful mini group buy for Mark Johnson's H9KPXG soft start boards and, like every other junkie, want to do it again. This time, I'm considering a group buy for Mark's VRDN bipolar power supply for line level circuits. There is a wealth of technical information regarding this board on Mark's thread: VRDN: bipolar regulator PCB for line level ckts: ±11V to ±20V @ 1.5A with "De-Noiser"

The purpose of this post is to assess whether there is enough interest to justify my hosting a group buy. I'm looking for likely buyers but not expecting a commitment; you have to be satisfied with quality and cost. My intention is to get green 1.6 mm thick ENIG-RoHS 2 oz copper pcbs. Let's assume pricing will be under $5 per board plus shipping (worst case for domestic purchasers is $8.30 for USPS Priority Mail, but I may be able to use less expensive padded mailers). Non-US orders are invited, but keep in mind that while I don't intend to profit on mailing expenses, you might be better off having the boards made yourself.

Is anyone interested?

Regards,
Scott

Two boards 1883/usa

 

[madeleeuw]

Hi Mike. Is this still happening?

For sure. US Postal service is running a bit slow but I expect boards any day now in Germany. Will repost when they arrive but I have enough for all inquiries so far.

Best,
Mike

 

[madeleeuw]

Any boards left for delivery to the UK?

Let me know how many you want and I can hold them

 

[Chrisr3521]

Hi Mike,

I'd like two boards if possible please.

Chris

 

[kempraj]

Hi Mike,

Are these still available. I would like 4 boards to UK please.

Thanks,
Kemp

 

[rikiheck]

I've created a Mouser BOM here that can be used for one-click purchase of everything needed to stuff the board. I just used the spreadsheet in the original post. Current cost is about $30 plus shipping.

 

[kempraj]

Hi Mike,

Are these still available. I would like 4 boards to UK please.

Thanks,
Kemp

I have now ordered from JLCPCB. As I need 4 four for myself, I’ll have few spares, when they eventually arrive in UK in few days.

Kemp

 

[Chrisr3521]

I maybe for a couple, postage would be less, plus no potential customs charges. How much would the cost of boards be?

 

[kempraj]

I should have them in 6-8 days. Ordered 10 PCB for £35 including FedEx and discount coupon. So £3 per PCB.

I have committed 2 boards to nautibuoy. So will have 4 spares left.

 

[kempraj]

I maybe for a couple, postage would be less, plus no potential customs charges. How much would the cost of boards be?

Happy to send you when I have them.

 

[madeleeuw]

I should have them in 6-8 days. Ordered 10 PCB for £35 including FedEx and discount coupon. So £3 per PCB.

I have committed 2 boards to nautibuoy. So will have 4 spares left.

The boards I’ve paid Scott for are stuck in customs in Frankfurt. I assume I will have them in the next week. If in the meantime if those who had expressed interest have subsequently made other arrangements then so be it. Lesson learned.

Mike

 

[kempraj]

Happy to send you when I have them.

All remaining four committed to reddish75. No more boards left.

 

[NealJ]

The boards I’ve paid Scott for are stuck in customs in Frankfurt. I assume I will have them in the next week. If in the meantime if those who had expressed interest have subsequently made other arrangements then so be it. Lesson learned.

Mike

Hi Mike,

I'm still in for the boards from you.

Cheers
Neal

 

[nautibuoy]

The boards I’ve paid Scott for are stuck in customs in Frankfurt. I assume I will have them in the next week. If in the meantime if those who had expressed interest have subsequently made other arrangements then so be it. Lesson learned.

Mike

Just let me know when you need payment for the boards I committed to Mike.

 

[jimk04]

Just looking to do a run of these from JLBPCB. There is a drop down for the arrangement of the layers that is blank and assume needs filling in.
Any assistance with that please?

 

[kempraj]

Try loading file again as automatically it should be 4 layers.

 

[jimk04]

Yes just done that but the drop down menu for the arrangement of the 4 layers is empty.

 

[kempraj]

Don’t select anything there. As long as very first line which shows 4 layers before dimensions, you will be fine.