[Yesterday:\u00a0 7 miles with Boardtown Runners,\u00a0 Today: 2 miles with dog.]<\/p>\n
I’m actually putting in a bit of effort on a long dormant project:\u00a0 my 10 Mhz frequency standard.<\/p>\n
I have all of the macro pieces and I needed to build some power supply stuff.\u00a0 Right now I am working on a PC board for stepping down\u00a0 +15 — GND — -15\u00a0 to +5 — GND — -5\u00a0 which is used in my heated, canned oscillator. My enclosure already included a power supply producing the +15\/-15.\u00a0 All I have to do is put in some regulators to trim down the voltage.<\/p>\n
This thing also will need +20 and +12 and +3 volts.<\/p>\n
I have\u00a0 the HP oscillator, the controller board, an rs-232 level converter, the GPS receiver board and an enclosure.\u00a0 I built most of the necessary power supply for the +20 and +12.\u00a0 I don’t remember where I am for the +3, and I probably need a separate +5\u00a0 too (I’ll have to look).\u00a0 I have a 9-pin rs-232 connector which will be on a switch allowing me to talk to either the controller board or the GPS receiver board.<\/p>\n
One of the major problems with picking up a set-aside project is trying to figure out what is done and what is not. Can you\u00a0 believe I have had some of the pieces for this project since January 2010?<\/p>\n
I am definitely not an electrical engineer.\u00a0 I don’t mind trying to repair stuff, and I have built some kits and things.\u00a0 But my “from scratch” work is nearly nil.\u00a0 So some of my project paralysis is that I don’t have a step-by-step to follow and I don’t want to mess it up.\u00a0 (Not like a mess-up would be a major problem.\u00a0 Since I’ve lived this long without a 10 Mhz frequency standard I can continue to do so.)<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
[Yesterday:\u00a0 7 miles with Boardtown Runners,\u00a0 Today: 2 miles with dog.] I’m actually putting in a bit of effort on a long dormant project:\u00a0 my 10 Mhz frequency standard. I have all of the macro pieces and I needed to build some power supply stuff.\u00a0 Right now I am working on a PC board for […]<\/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-1153","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\/1153","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=1153"}],"version-history":[{"count":5,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/1153\/revisions"}],"predecessor-version":[{"id":1158,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/1153\/revisions\/1158"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1153"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}