作者查詢 / chienjr
作者 chienjr 在 PTT [ Electronics ] 看板的留言(推文), 共361則
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6F推: 可以當裝飾品啊,像是以前光華商場外面就用廢主機板裝飾12/12 23:10
20F→: 78xx本身的datasheet就有用電晶體擴大電流的方式,用IC前07/28 01:31
21F→: 最好看看該廠的datasheet,有時候同型號特性細節有差07/28 01:32
22F→: 7F那個電路基本上已經沒有閉迴路穩壓了07/28 01:34
23F→: 用電晶體放大電流還是依照原廠建議的方式就好07/28 01:35
4F推: 工作上或學生不是都可以要的到嗎..或跟TI的線上商店買06/05 17:53
1F推: 這鍍金探針直徑如果大約是2mm-1mm左右,那很像彈簧探針05/04 00:54
2F→: 前端上面30%處的直徑05/04 00:54
5F推: 推03/03 01:13
9F推: 1mA/1um 那規格是考量壽命與電子遷移效應11/18 22:39
10F推: 不考慮導線壽命11/22 00:51
140F噓:11/19 10:27
3F→: 電阻其實就是不要太好的導電率,使用銀應該不是考量導電07/15 20:02
4F→: 應該是其他加工難易度。而改用錫,即使成功,也會完蛋07/15 20:02
5F推: 組裝到PCB時的加熱,就可能會讓錫膜電阻失效07/15 21:02
2F→: mouser, rs一類不都是一個星期就到?05/04 17:14
12F→: 以前我們跟mouser買也走代購..但我覺得貨有時怪怪的05/05 20:19
13F→: 最近幾次都採取直購了05/05 20:19
23F→: 話說早期的積體電路也是用洗的...手按碼表計時04/30 20:27