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作者 jetzake 在 PTT [ Electronics ] 看板的留言(推文), 共73則

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[問題] 如何穩壓 (有新問題產生)

[ Electronics ]27 留言, 推噓總分: +7

作者: jiannan1828 - 發表於 2009/11/28 16:08(16年前)

10^F推jetzake:輸入輸出的濾波都用470uF 16V??11/29 00:28

13^F→jetzake:輸入抓2200uF 輸出用100-220uF 各併一顆0.1uF的試試看11/29 21:53

14^F→jetzake:輸出的0.1uF靠近IC一點用體積小的陶瓷電容就行11/29 21:54

15^F→jetzake:如果還是不行再把橋整的地方併上0.1uF的陶瓷電容11/29 21:57

16^F→jetzake:http://img25.imageshack.us/img25/1558/bdcap01.jpg 如圖11/29 22:09

18^F→jetzake:可能特性不適合吧?? 你用的二極體編號是...??12/01 09:32

19^F→jetzake:如果是1N4148這類.. 只能說不意外...= =A12/01 09:33

23^F推jetzake:輸出端的濾波電容用太大了啦...= =@m 而且要併一顆小的..12/01 20:54

[問題] 想 DIY 修理吹風機...

[ Electronics ]15 留言, 推噓總分: +6

作者: drkh - 發表於 2009/11/20 18:45(16年前)

8^F→jetzake:同意樓上再加上吹風機的功率其實不小出問題會很嚴重...11/21 02:12

[問題] 2瓦電燈砲異常發亮..之後燒毀..

[ Electronics ]6 留言, 推噓總分: +4

作者: fairwarning - 發表於 2009/10/23 21:17(16年前)

6^F推jetzake:這東西大多應該是吃12V或24V的吧?? 上面就標示110V嗎??10/25 17:34

Re: [問題] 關於耳機用擴大器DIY (CMOY)

[ Electronics ]8 留言, 推噓總分: +1

作者: jetzake - 發表於 2009/10/21 02:40(16年前)

4^F→jetzake:嗯.. 考慮到體積問題.. 下次試試看Nichicon MUSE的BP吧..10/21 12:14

5^F→jetzake:啊還有..我的OPA2134PA就只剩裝在機器上這顆了說...= =A10/21 12:15

6^F→jetzake:不過我知道哪裡可以買啦.. 小貴就是..(150元一顆)10/21 12:16

[問題] DC24V POWER的問題..

[ Electronics ]16 留言, 推噓總分: +5

作者: DoRaCMn - 發表於 2009/10/16 16:59(16年前)

6^F推jetzake:100歐姆的電阻用24V約有1/4安培導通瞬間peak可能更大..10/18 13:47

7^F→jetzake:簡單的說... 10W以內的電阻幾乎都不太安全喔...10/18 13:47

[問題] 關於耳機用擴大器DIY (CMOY)

[ Electronics ]21 留言, 推噓總分: +5

作者: jetzake - 發表於 2009/10/14 23:36(16年前)

9^F→jetzake:嗯..這樣說來我全部都用1/4W的電阻的確是有問題...10/15 11:31

10^F→jetzake:沒電應該是不可能.. 我那組+-5V是直接插插頭的..10/15 11:32

11^F→jetzake:不過說到電阻瓦數.. 應該只有47Ω那組會出事..10/15 11:33

12^F→jetzake:我找找1/2W或是1W之類的換上試試看好了10/15 11:34

13^F→jetzake:還是說其他電阻也有這種問題?? 我一併換掉??10/15 11:35

14^F→jetzake:另外... HiJimmy大.. 我這電路應該所有地都是通的不是嗎?10/15 11:42

[問題] 光敏電阻的疑問

[ Electronics ]25 留言, 推噓總分: +5

作者: howardfang - 發表於 2009/10/13 23:43(16年前)

15^F推jetzake:LED有1mA就會亮摟...10/15 11:40

[問題] Bead有可能擋DC嗎?

[ Electronics ]1 留言, 推噓總分: +1

作者: MaligB - 發表於 2009/10/02 00:37(16年前)

1^F推jetzake:BEAD骨子裡算是"加了個磁環的導線" 說不定就是那個壓降...10/05 03:15

[問題] 指針式三用電表ACV檔量直流電壓?

[ Electronics ]3 留言, 推噓總分: 0

作者: synyh - 發表於 2009/10/01 08:46(16年前)

1^F→jetzake:...你量測的電路要不要稍微說明一下??10/02 01:51

Re: [請益] 想弄個+-5V的雙電源輸出...

[ Electronics ]15 留言, 推噓總分: +1

作者: jetzake - 發表於 2009/09/19 23:20(16年前)

2^F→jetzake:樓上是說OS-CON一類還是PP電容?? 好像不管哪個都要噴錢...09/19 23:47

3^F→jetzake:手邊還有松下的FC系列和ELNA的電容但都是小容質就是了09/19 23:49

10^F→jetzake:因為...耳擴已經做好了目前是用6顆3號電池推...09/21 16:32

11^F→jetzake:之前用9V電池兩顆會發熱效果也不太好..09/21 16:33

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