{"id":91,"date":"2024-10-05T01:22:18","date_gmt":"2024-10-05T01:22:18","guid":{"rendered":"https:\/\/hauslendale.com\/kyp\/articles\/?p=91"},"modified":"2024-10-05T06:17:24","modified_gmt":"2024-10-05T06:17:24","slug":"modifying-camera-to-accommodate-silver-oxide-batteries-by-jean-colin","status":"publish","type":"post","link":"https:\/\/hauslendale.com\/kyp\/articles\/2024\/10\/05\/modifying-camera-to-accommodate-silver-oxide-batteries-by-jean-colin\/","title":{"rendered":"Modifying Camera to Accommodate Silver Oxide Batteries by Jean Colin"},"content":{"rendered":"\n <p>Battery choice:<\/p>\n                <ul>\n                    <li>\n                        Mercury battery was choosed by camera manufacturers because they have a very stable voltage, and this allow a very simple electrical circuit (a galvanometer). In adition, they had a high capacity\n                        <br>\n                    <\/li>\n                    <li>\n                        Actually, the silver oxyde battery has the same voltage stability, but voltage is increased (1.55V instead of 1.35V)\n                        <br>\n                    <\/li>\n                    <li>For recent camera design, electronics is so cheap that it is probably cheaper to enhance design to accommodate with voltage decrease of alkaline batteries than to include silver-oxyde batteries in the camera package.<\/li>\n                <\/ul>\n                <p>\n                    <strong>How to modify<\/strong>\n                <\/p>\n                <p>We need a galvanometer with one changed caracteristics, a sensibility decreased of 13%.<\/p>\n                <p>Below, you have two possibilities, and value calculated for a 10000 Ohm galvanometer.<\/p>\n                <p>\n                    Practically, calculated values are to be rounded to available resistors\n                    <br>\n\n                              1481 Ohm -&gt; available 1,5 kOhm 5%\n                    <br>\n\n                              77500 Ohm -&gt; available 75 kOhm 5%\n                <\/p>\n                <p>\n                    1290 Ohm -&gt; available 1,3 kOhm 5%\n                    <br>\n\n                              67500 Ohm -&gt; available 68 kOhm 5%\n                <\/p>\n                <p>If your galvanometer has a different resistance, you have to multiply thoses calculed values by the ratio betwenn your resistance and 10000 (my example).<\/p>\n                <p>\n                    10000 -&gt; 1481;77500 1290;67500\n                    <br>\n\n                              22000 -&gt; 3258;170000 2838;148500\n                <\/p>\n                <p align=\"center\">\n                    <img loading=\"lazy\" decoding=\"async\" src=\"..\/classics\/images\/siloxideschem.gif\" width=\"400\" height=\"147\">\n                <\/p>\n                <p>Then you have to take the soldering iron&#8230;<\/p>\n                <p>The other problem is to have a mechanical adaptation of the battery chamber<\/p>\n            <\/td>\n        <\/tr>\n    <\/table>\n","protected":false},"excerpt":{"rendered":"<p>Battery choice: Mercury battery was choosed by camera manufacturers because they have a very stable voltage, and this allow a very simple electrical circuit (a galvanometer). In adition, they had&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[8],"tags":[],"class_list":["post-91","post","type-post","status-publish","format-standard","hentry","category-classic-camera-miscellaneous"],"_links":{"self":[{"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/posts\/91","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/comments?post=91"}],"version-history":[{"count":1,"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/posts\/91\/revisions"}],"predecessor-version":[{"id":92,"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/posts\/91\/revisions\/92"}],"wp:attachment":[{"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/media?parent=91"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/categories?post=91"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hauslendale.com\/kyp\/articles\/wp-json\/wp\/v2\/tags?post=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}