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--- journal:201402 [2014/02/24 07:45] – 220.86.36.224
+++ journal:201402 [2026/06/11 05:52] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== 2월 2일 ======
+PCB 에칭 재료
 염화제2철. 청계천
  - 성진상사 2265-4160 1.5리터에 3000원, 25kg 2만원
@@ Line 24: / Line 28: @@
 {{:journal:achrilc_case.png?500|}}
+======= 2월 25일 =======
+http://bleeplabs.com/
+nebulophone_filter 적분기
+{{:journal:nebulophone_filter_ltspice.png?500|}}
+http://www.analog.com/en/circuits-from-the-lab/cn0119/vc.html?stop_mobi=yes