someone else’s nixie clock<\/a>.<\/p>\nI want to have it run off of the 10 MHz feed from my GPSDO, so it will be very accurate.\u00a0 It will use GPS for the tick\/tock but not actually use the GPS timing message to set the current time.<\/p>\n
Nixie tubes are a vacuum tube technology.\u00a0 They come in different sizes.\u00a0 Inside the tube are multiple filaments.\u00a0 You apply a positive voltage to the Anode, then whichever Cathode you attach to ground will complete the circuit and make that filament glow.\u00a0 A 0-9 digit display therefore has at least 11 pins.\u00a0 Mine have 0-9 digits and two decimal points, one on the left and one on the right.\u00a0 I have 8 of these things in a circuit board which came out of an old frequency counter.<\/p>\n
I dug out a DC voltage supply which I used to test these tubes and they work ok.\u00a0 The circuit board has more stuff on it than I need:\u00a0 the counter had rippling counter chips which I won’t use.\u00a0 I will study the board a bit more then saw off the part I don’t need.<\/p>\n
I’ve been wanting to do one of these for a long time.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
[Today’s run: about 1\/4 mile] Have I mentioned this yet? I think I am finally getting started on a nixie tube clock.\u00a0 I have a schematic in hand and I have most of the parts. Nixie tubes were used in many devices that needed a numerical display before LED and LCD displays came along. Here […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-4020","post","type-post","status-publish","format-standard","hentry","category-ham-radio"],"_links":{"self":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4020"}],"version-history":[{"count":2,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4020\/revisions"}],"predecessor-version":[{"id":4022,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4020\/revisions\/4022"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4020"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![someone else’s nixie clock<\/a>.<\/p>\nI want to have it run off of the 10 MHz feed from my GPSDO, so it will be very accurate.\u00a0 It will use GPS for the tick\/tock but not actually use the GPS timing message to set the current time.<\/p>\nNixie tubes are a vacuum tube technology.\u00a0 They come in different sizes.\u00a0 Inside the tube are multiple filaments.\u00a0 You apply a positive voltage to the Anode, then whichever Cathode you attach to ground will complete the circuit and make that filament glow.\u00a0 A 0-9 digit display therefore has at least 11 pins.\u00a0 Mine have 0-9 digits and two decimal points, one on the left and one on the right.\u00a0 I have 8 of these things in a circuit board which came out of an old frequency counter.<\/p>\nI dug out a DC voltage supply which I used to test these tubes and they work ok.\u00a0 The circuit board has more stuff on it than I need:\u00a0 the counter had rippling counter chips which I won’t use.\u00a0 I will study the board a bit more then saw off the part I don’t need.<\/p>\nI’ve been wanting to do one of these for a long time.<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":"[Today’s run: about 1\/4 mile] Have I mentioned this yet? I think I am finally getting started on a nixie tube clock.\u00a0 I have a schematic in hand and I have most of the parts. Nixie tubes were used in many devices that needed a numerical display before LED and LCD displays came along. Here […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-4020","post","type-post","status-publish","format-standard","hentry","category-ham-radio"],"_links":{"self":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4020"}],"version-history":[{"count":2,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4020\/revisions"}],"predecessor-version":[{"id":4022,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4020\/revisions\/4022"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4020"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}](\"http:\/\/www.meinbergglobal.com\/images\/news\/clock.jpg\"){kind=link}