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作者 beagle 在 PTT [ Electronics ] 看板的留言(推文), 共1245則
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1F推:RS-23207/02 17:11
1F推:有沒有辦法限定只讓其中一種出現06/30 21:47
2F→:推錯...06/30 21:47
3F→:A 是一對四解多工器, B 是四組選擇器, C 是7447七段編碼器06/30 21:49
1F推:一個方法是改用效率高的電源轉換 IC, 比如現成的模組直接06/29 17:01
2F→:換掉 7832 或自己用 MC34063A 去做電路, 我試過效率有 80%06/29 17:02
3F→:這樣你就可以繼續用 9V, 因為輸入電壓越高效率越好。06/29 17:02
4F→:順帶一提,MC34063A也可以用來升壓,有興趣的話看看DataSheet06/29 17:05
1F推:一邊用烙鐵加熱, 一邊用吸錫器吸吸看06/28 15:21
7F推:LED 自己就是二極體~06/28 12:09
1F推:八層板的好處就是可以架大地之盾把電磁輻射源罩住...06/27 23:15
6F→:我在 Digi-Key 找過了, 其實這片 TFT 就是在 Digi-Key 買的06/26 00:47
7F→:包括 NewHaven 原廠都沒賣 0.7mm 的接頭... 0.5 倒是有賣..06/26 00:50
8F→:TFT 貨號 NHD-1.8-128160YF-CTXI#-ND 請不要跳火坑謝謝06/26 00:52
15F→:影片很棒, 謝謝 ^^06/26 10:47
10F推:與其要做鬧鐘, 不如做鬧鐘 Online06/25 22:09
6F推:可以到 E-Appliance 板看看06/24 15:04
4F推:LED 接馬鈴薯就會亮了, 嫌馬鈴薯熱量太高也可以接蕃茄06/23 20:37