This is a multi-part message in MIME format. ------=_NextPart_000_00D0_01C54FD4.473B0B00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit > At micoamps worth of current, why not use a 16f5x or 12f5x running > in RC mode, then use a varactor as your C Or even use the A2D What sort of VCO resolution do you want, and how often does it need to change ? This two-gate CMOS VCO works OK. I've used it in the past but have no notes about power consumption. Didn't know there'd be a test. Values are from the original circuit in ETI 7/82. You may find that linear characteristics vary between manufacturers ------=_NextPart_000_00D0_01C54FD4.473B0B00 Content-Type: image/gif; name="vco.gif" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="vco.gif" R0lGODlhpwCNAIAAAAAAAP///ywAAAAApwCNAAAC/oyPqcvtD6OctNqLs968+w+G4kiW5omm6sq2 7ssAiAzXdkcb+c330r7zCYezIvEDSCqXzKbzCY1Kp8oZNXo08qo47SVIBNfEGKCG7EO71BVzhn2D r+Q/r4UOw6P08+yBbwKYItiXlkWogiiiWMJ44ggCGSJJQulh2eUXgLnByeGJFLj0l6QA2qm5GViU 43Z0mllp16oJ+ynK5WX7lgpLAwZ82LuqY/f3Otx4XNyw25Yse8xkilwr5HwHnVBaSMFN7Ecm8w3u vemrrUUeba4Dil0Ws23LF7QeK7wgdh/aPh+Zbpk+T/WaSYL3RZ4DfmeeLXSEMJu+CAwT+nvY0NrE /h/7KlK7+IBfro2PSDZTOIEcLYoOU7pCs2vcNlUG932RacyUx49tcAq0YsmJwJXnriBaZzTpToxA jcqyR7POHZ/MJt2MWjWOSZbeXrLjqC6VRYodT+ERuVTs1hgRc+pUuyhk25lM4U77mdJgD5hzMzJL y9PKtYFwA8sUZK/vScGFdY5ETCrfucYKoWYD/GKcYoBZEW8mSznkz8+hx4QtjTq16tWsW7t+DTu2 7Nm0a9vuNArvw1wj5ZIO7QazGaILdd++JQ1rVl10q4o7Pin3cneJeyun2hx6JssoaQYLnF07cqxl m7sKb1w8r87gh6bHrlw9KvdSi9113vS3/P38/vv7/w9ggAIOSGCBBh6IYIKkPNZSUQtOl9+DHLXC DV96AIHZeN5dSJRP8DFH3GKq0PIchIThhxuF5LES30kdRoWTTXjJwV2MbhX3onR52edOhLrdN1qF yYmjY2c6SscFdhbek2N6NZVC3C/oiYYfiTBNRweJ0nwnEYxeghTlaI4x6Z6WJa44D4M88sjdmFxq aaKIMXrlJEpwjtjil3na6SV8IRZXZZ1sqXjen1RSJ6GUaNpXZE2JYpkhhoru2aUhCi6o342Xbspp p55+Cmqooo5KaqmmgmOdo/TxpKagAk5KI31ooahSpuFQCoGifno3ZHKbfkgdQ7rGZyOKrgYI/ixX eF7316pxEpgskOwBOc2Lmg4Ia33MbmTtsQBSmOUobaqj0pSnnotuuuquy2677r4Lb2EHHamMrWtc YkSGz9jbwi9C+rthm4dNyOg3Sa7ob8KEItqYh5NtqGdR5ea6Ja9mMnbnnBGLpbCemqk5rl7NBjxw kFD6OmKj1mSMsnnGpDrssnjSKbPD/LIE8Eons8fzocVqTJXONvdo6K2TBT2nwN4ezOvRMpNXMsQJ 13YzPrKpvBrW8W7NdddeIwt1q4B+HXS+sZZ6MJL/gojrX2s77SCLcasdMGVWWtwrpue5WLHUQQa6 5s5tD2HwyOKiGTK3VeRIL6Z9bpkqx4Y/QU4zseWyvCarKA9dGpxS5rzo3vKA7nbEQj8O9+DXCNn0 yWU7u5jrgk2tS9SkR64uJ1XDpvVU+n4NfPDCD088CQUAADs= ------=_NextPart_000_00D0_01C54FD4.473B0B00 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist ------=_NextPart_000_00D0_01C54FD4.473B0B00--