Search found 55 matches

by jmmcg
Fri May 01, 2020 2:39 pm
Forum: OXO board assembly instructions
Topic: Board PCB
Replies: 16
Views: 19208

Re: Board PCB

This is the first surface-mount kit I have ever assembled, so apologies for my ham-fistedness! (The OXO kit was a present from a good friend, Robin.) I have assembled the base-board and two of the NIXIE driver PCBs. I tried two IN-7s in the boards & neither struck. I presume I have faultily asse...
by jmmcg
Fri May 01, 2020 2:29 pm
Forum: OXO board assembly instructions
Topic: Piece base PCB
Replies: 18
Views: 14759

Re: Piece base PCB

XXXsnipXXX On a scope it will appear as a group of spikes repeated at regular intervals, I can't remember the exact frequency for that version as it was only used in one batch, the later ones switched back to a 12V supply and a different frequency. Thanks for the details! My PCBs are black. Can I s...
by jmmcg
Fri May 01, 2020 1:04 pm
Forum: OXO board assembly instructions
Topic: Piece base PCB
Replies: 18
Views: 14759

Re: Piece base PCB

XXXsnipXXX http://www.lasermad.com/instructions/CB15/SMcomplete.jpg 1. This looks somewhat different to my completed PCB. e.g. D5 is not installed. I presume the images are of a different version? 2. I assume the NIXIE is powered by some kind of HF transformer. What is the approximate signal that s...
by jmmcg
Fri May 01, 2020 12:56 pm
Forum: OXO board assembly instructions
Topic: Piece base PCB
Replies: 18
Views: 14759

Re: Piece base PCB

If you have the later kit with IN-4 nixies use this picture - note the right-hand pin is slightly to the left of the pad on the PCB to allow the correct pin spacing. XXXSnipXXX The IN-4 is used for the '0' and has pin 10 connected to HV and pin 8 to ground, which is the pad to the right. Again you'...
by jmmcg
Fri May 01, 2020 12:54 pm
Forum: OXO board assembly instructions
Topic: Piece base PCB
Replies: 18
Views: 14759

Re: Piece base PCB - SMD version

Tin the cut end of 2 pins then put a blob of solder on the pads shown here: Looking from under the nixie, pins are counted clockwise from the gap with the first to the right of it being pin 1. Make four of these for use with 4x IN-7A/IN-7 for the '+'. pin 2 is connected to the pad marked 'HV' and p...