<![CDATA[
<p><span data-ke-size="size16"><b>캐패시터와 인덕터를 측정할 수 있는 간이형 LC meter(LC메터)를 만들어 봅시다.</b></span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16">전자회로를 꾸밀 때 간혹 L값 또는 C값을 측정해야 하는 난감한 경우가 발생할 때가 있답니다.</span></p><p><span data-ke-size="size16">이럴 때 요긴하게 사용할 수 있는 간이형 LC meter(LC메터)를 만들어 봅시다.</span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16">우선 인터넷을 검색하여 찾아낸 LC meter의 측정범위는 </span></p><p><span data-ke-size="size16">커패시턴스가 0~0.1uF</span></p><p><span data-ke-size="size16">인덕턴스가 0~10mH</span></p><p><span data-ke-size="size16">예상 정확도는 ±1%(± 0.1pF, ±10nH) 이라고 하는데 거의 계측기 수준이라고 할까?? </span><span data-ke-size="size16">라고 하니 믿고 만들어 보겠습니다.</span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16">회로와 동작원리는 LC 발진 원리를 이용하여 측정할 C 또는 L을 발진기에 병렬 또는 직렬로 연결하여 </span><span data-ke-size="size16">발진하는 주파수값을 계산하여 L값과 C값을 알아내는 원리랍니다.</span></p><p><span data-ke-size="size16">LC 발진 공식은</span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignLeft" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/99C193385B97973B1B" class="txc-image" width="100" data-img-src="https://t1.daumcdn.net/cfile/cafe/99C193385B97973B1B" data-origin-width="100" data-origin-height="51"></div><p><span data-ke-size="size16"> </span><span data-ke-size="size16">이니까 L값과 C값을 계산할 수 있겠지요..</span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16">회로 구성은 발진회로와 발진된 주파수를 L값 또는 C값으로 연산하기 위한 마이크로 컨트롤러로 구성된답니다.</span></p><p><span data-ke-size="size16"> </span></p><p><span style="color: #0900ff;" data-ke-size="size16"><b>회로도</b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1N6Gv/f4ec9b263ea29c28e6ebf19ea8c4bc26a12c67f3" class="txc-image" width="650" height="347" data-img-src="https://t1.daumcdn.net/cafeattach/1N6Gv/f4ec9b263ea29c28e6ebf19ea8c4bc26a12c67f3" data-origin-width="1009" data-origin-height="538"><div class="figcaption">main 회로도</div></div><p> </p><p><span style="color: #0900ff;"><b>자세한 회로도, 부품 목록, 부품 배치도, 패턴도, 소스코드는 여기를 클릭하세요</b></span></p><p><span style="color: #0900ff;"><b><a href="https://cafe.daum.net/funny-circuit/M2lg/97" target="_blank" class="ke-link">https://cafe.daum.net/funny-circuit/M2lg/97</a></b></span></p><p> </p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"><b><span style="color: #0055ff;">부품을 준비해 봅시다.</span></b></span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16">정확한 부품 소요량은 회로도면을 참고하세요..</span></p><div class="table-wrap"><table data-ke-type="table" data-ke-align="alignLeft" style="width: 100%;" border="1"><tbody><tr><td style="text-align: center;">품명</td><td style="text-align: center;">형명</td><td style="text-align: center;">적용</td><td style="text-align: center;">수량</td><td style="text-align: center;">비고</td></tr><tr><td>콘덴서</td><td>10uF</td><td>C1,C4,C6</td><td style="text-align: center;">3</td><td>전해 콘덴서</td></tr><tr><td>콘덴서</td><td>104</td><td>C2,C3</td><td style="text-align: center;">2</td><td>모노리틱</td></tr><tr><td>콘덴서</td><td>1000pF</td><td>C5</td><td style="text-align: center;">1</td><td>모노리틱</td></tr><tr><td>콘덴서</td><td>1000pF</td><td>C7</td><td style="text-align: center;">1</td><td>모노리틱</td></tr><tr><td>콘덴서</td><td>100uF</td><td>C8</td><td style="text-align: center;">1</td><td>전해 콘덴서</td></tr><tr><td>LCD 표시기</td><td>16x2 LCD</td><td>LCD1</td><td style="text-align: center;">1</td><td></td></tr><tr><td>LED</td><td>GRN 5mm</td><td>LD1</td><td style="text-align: center;">2</td><td></td></tr><tr><td>LED</td><td>YEL 5mm</td><td>LD6</td><td style="text-align: center;">1</td><td></td></tr><tr><td>LED</td><td>GRN 3mm</td><td>LD5, LD3</td><td style="text-align: center;">2</td><td></td></tr><tr><td>LED</td><td>YEL 3mm</td><td>LD4, LD2</td><td style="text-align: center;">2</td><td></td></tr><tr><td>LED</td><td>RED 3mm</td><td>LD7, LD8</td><td style="text-align: center;">2</td><td></td></tr><tr><td>TR</td><td>PN2907A</td><td>Q1</td><td style="text-align: center;">1</td><td></td></tr><tr><td>다이오드</td><td>1N4148</td><td>D1,D2</td><td style="text-align: center;">2</td><td></td></tr><tr><td>저항</td><td>470</td><td>R1,R5~R7,R12~R14</td><td style="text-align: center;">7</td><td></td></tr><tr><td>저항</td><td>1k</td><td>R2</td><td style="text-align: center;">1</td><td></td></tr><tr><td>저항</td><td>100K</td><td>R3,R4,R8</td><td style="text-align: center;">3</td><td></td></tr><tr><td>저항</td><td>47K</td><td>R9</td><td style="text-align: center;">1</td><td></td></tr><tr><td>저항</td><td>6.8K</td><td>R10,R11,R15</td><td style="text-align: center;">3</td><td></td></tr><tr><td>가변저항</td><td>10K</td><td>VR1</td><td style="text-align: center;">1</td><td></td></tr><tr><td>스위치</td><td>Rocker KCD11</td><td>SW1</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>스위치</td><td>IT-2203S, Lock</td><td>SW2</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>스위치</td><td>IT-2203N, N-Lock</td><td>SW3,SW6</td><td style="text-align: center;">2</td><td>또는 동등품</td></tr><tr><td>스위치</td><td>IT-4203S, Lock</td><td>SW4</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>스위치 노브</td><td>흑, 적</td><td>SW1~4, SW6</td><td style="text-align: center;"></td><td>선택</td></tr><tr><td>스위치</td><td>TACT 1102B-6mm</td><td>SW5</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>IC</td><td>LM311</td><td>U1</td><td style="text-align: center;">1</td><td></td></tr><tr><td>IC</td><td>PIC16F84</td><td>U2</td><td style="text-align: center;">1</td><td></td></tr><tr><td>콘넥터</td><td>INLET DAC-11F</td><td>J1</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5264-2</td><td>J2</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>터미널</td><td>5263</td><td>J2</td><td style="text-align: center;">2</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5267-2</td><td>J3</td><td style="text-align: center;">1</td><td>또는 동등푸</td></tr><tr><td>콘넥터</td><td>P1022001</td><td>J4</td><td style="text-align: center;">1</td><td>speaker terminal</td></tr><tr><td>콘넥터</td><td>5264-2</td><td>J5</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>터미널</td><td>5263</td><td>J5</td><td style="text-align: center;">2</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5267-2</td><td>J6</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5264-9</td><td>J7</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>터미널</td><td>5263</td><td>J7</td><td style="text-align: center;">9</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5267-9</td><td>J9</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5267-2</td><td>J10</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5267-4</td><td>J13,J16</td><td style="text-align: center;">2</td><td>또는 동등품</td></tr><tr><td>콘넥터</td><td>5264-4</td><td>J14,J15</td><td style="text-align: center;">2</td><td>또는 동등품</td></tr><tr><td>터미널</td><td>5263</td><td>J14,J15</td><td style="text-align: center;">8</td><td>또는 동등품</td></tr><tr><td>릴레이</td><td>HR90-DC05H</td><td>LS1,LS2</td><td style="text-align: center;">2</td><td>또는 동등품</td></tr><tr><td>인덕터</td><td>82uH</td><td>L1</td><td style="text-align: center;">1</td><td></td></tr><tr><td>발진기</td><td>SCO-06, 4MHz, 5V</td><td>OSC1</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>퓨즈</td><td>FUSE 220V1A</td><td>F1</td><td style="text-align: center;">1</td><td></td></tr><tr><td>퓨즈 홀더</td><td>배선 고정용</td><td>F1</td><td style="text-align: center;"></td><td>또는 동등품</td></tr><tr><td>점퍼</td><td>핀헤더 2.54mm 2P</td><td>JP1</td><td style="text-align: center;">1</td><td>도는 동등품</td></tr><tr><td>전원공급기</td><td>5Vdc 1A SMPS</td><td>Assy1</td><td style="text-align: center;">1</td><td>또는 동등품</td></tr><tr><td>수축튜브</td><td></td><td></td><td style="text-align: center;">필요량</td><td>배선용</td></tr><tr><td>케이스</td><td></td><td></td><td style="text-align: center;">1</td><td>자작</td></tr><tr><td>전면 ASSY</td><td>Font SW_LED Assy</td><td></td><td style="text-align: center;">1</td><td></td></tr><tr><td>전선</td><td>연선 흑, 적</td><td></td><td style="text-align: center;">필요량</td><td>AWG18</td></tr><tr><td>전선</td><td>연선 흑, 적</td><td></td><td style="text-align: center;">필요량</td><td>AWG22</td></tr><tr><td>전선</td><td>연선 10 color</td><td></td><td style="text-align: center;">필요량</td><td>AWG26~28</td></tr><tr><td>패턴</td><td>단선</td><td>패턴용</td><td style="text-align: center;">필요량</td><td>0.3mm, 주석도금</td></tr><tr><td>PCB</td><td>만능 기판</td><td></td><td style="text-align: center;">필요량</td><td></td></tr><tr><td>나사</td><td>M3</td><td></td><td style="text-align: center;">필요량</td><td>고정용</td></tr><tr><td>지지대</td><td>M3</td><td></td><td style="text-align: center;"></td><td>고정용</td></tr></tbody></table></div><p> </p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"><b><span style="color: #0055ff;">부품이 준비되었으면 만들어 봅시다.</span></b></span></p><p> </p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1N6Gv/f60b2517fca99b3ebc8e81db6bd32108c2edbdd0" class="txc-image" width="450" height="342" data-img-src="https://t1.daumcdn.net/cafeattach/1N6Gv/f60b2517fca99b3ebc8e81db6bd32108c2edbdd0" data-origin-width="897" data-origin-height="682"><div class="figcaption">부품 배치도</div></div><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1N6Gv/690b25c8fc71d999469d62d598a1da416d0f0880" class="txc-image" width="450" height="346" data-img-src="https://t1.daumcdn.net/cafeattach/1N6Gv/690b25c8fc71d999469d62d598a1da416d0f0880" data-origin-width="888" data-origin-height="683"><div class="figcaption">패턴도</div></div><p> </p><p><span data-ke-size="size16"><b><span style="color: #0055ff;">완성품</span></b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/99BC63335B97940602" class="txc-image" width="700" data-img-src="https://t1.daumcdn.net/cfile/cafe/99BC63335B97940602" data-origin-width="700" data-origin-height="257"></div><p><span data-ke-size="size16"><b>참고 : 스위치, fuse, LCD,  SMPS는 시중에서 구입한 것을 배선과 콘넥터 작업만 하여 사용합니다.</b></span></p><p><span data-ke-size="size16"><b>         여기서는 Main PCB 만들기와 케이스 만들기, Assy 조립을 하여 완성품을 만듭니다.</b></span></p><p><span data-ke-size="size16"><b>        -- 전면판의 LED와 누름 스위치는 제작자의 의도대로 구성하여 조립하시기 바랍니다. </b></span></p><p> </p><p> </p><p> </p><p><span data-ke-size="size18"><b>다음은 케이스와 각 Assy를 조립하는 과정입니다.</b></span></p><p> </p><p><span data-ke-size="size16"><b><span style="color: #0055ff;">케이스 제작</span></b></span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16">케이스는 3T ABS 판재를 잘라 만들었답니다.</span><span data-ke-size="size16"> </span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/995B4A4B5B97A34B2C" class="txc-image" width="700" data-img-src="https://t1.daumcdn.net/cfile/cafe/995B4A4B5B97A34B2C" data-origin-width="700" data-origin-height="252"><div class="figcaption">전면판과 후면판 만들기</div></div><p><span data-ke-size="size16"> </span><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"><b><span style="color: #0055ff;">PCB 장착과 배선</span></b></span><span data-ke-size="size16"><b> </b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/993E88485B97A4CE01" class="txc-image" width="700" data-img-src="https://t1.daumcdn.net/cfile/cafe/993E88485B97A4CE01" data-origin-width="700" data-origin-height="252"></div><p><span data-ke-size="size16"><b><span style="color: #0055ff;"> </span></b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/994D7B385B97A6EB2F" class="txc-image" width="700" data-img-src="https://t1.daumcdn.net/cfile/cafe/994D7B385B97A6EB2F" data-origin-width="700" data-origin-height="243"></div><p><span data-ke-size="size16"> </span><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"><b><span style="color: #0055ff;">조립완료</span></b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/994D27395B979B6724" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/994D27395B979B6724" data-origin-width="580" data-origin-height="435"></div><p> </p><p><span style="color: #0055ff;" data-ke-size="size16"><b>동작 시험</b></span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"><b>콘덴서 측정을 위한 Calibrating</b></span></p><p><span data-ke-size="size16">(콘덴서 측정을 위해서는 측정 입력단을 Open 시켜 Calibrating 한 후 측정해야 한답니다.)</span><span data-ke-size="size16"> </span></p><p> </p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/99835A4E5B979A1F28" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/99835A4E5B979A1F28" data-origin-width="580" data-origin-height="435"></div><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"><b>Calibrating 결과값</b></span><span data-ke-size="size16"> </span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/9963D6465B97999A0C" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/9963D6465B97999A0C" data-origin-width="580" data-origin-height="435"></div><p> </p><p><span data-ke-size="size16"> </span><span data-ke-size="size16"><b>콘덴서 102(1000pF) 측정 결과</b></span><span data-ke-size="size16"><b> </b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/9935A24E5B97991715" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/9935A24E5B97991715" data-origin-width="580" data-origin-height="435"></div><p><span data-ke-size="size16"> </span><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16"><b>콘덴서 측정범위 초과 표시</b></span><span data-ke-size="size16"> </span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/997AF34D5B9798DB04" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/997AF34D5B9798DB04" data-origin-width="580" data-origin-height="435"></div><p> </p><p><span data-ke-size="size16"> </span><span data-ke-size="size16"><b>인덕터 측정을 위한 Calibrating</b></span></p><p><span data-ke-size="size16">(인덕터 측정을 위해서는 측정 입력단을 Short 시켜 Calibrating 한 후 측정해야 한답니다.)</span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/9978903E5B97980216" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/9978903E5B97980216" data-origin-width="580" data-origin-height="435"></div><p> </p><p><span data-ke-size="size16"><b>입력단 Short를 제거한 후 인덕터 측정 대기모드</b></span><span data-ke-size="size16"> </span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/99F67D3D5B97947106" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/99F67D3D5B97947106" data-origin-width="580" data-origin-height="435"></div><p> </p><p><span data-ke-size="size16"> </span><span data-ke-size="size16"><b>인덕터 101(100uH)를 측정한 결과</b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/995056375B9793502E" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/995056375B9793502E" data-origin-width="580" data-origin-height="435"></div><p><span data-ke-size="size16"><b> </b></span></p><p><span data-ke-size="size16"> </span><span data-ke-size="size16"><b><span style="color: #0055ff;">최종 수정</span></b></span></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cfile/cafe/998DE6355B978B2405" class="txc-image" width="580" data-img-src="https://t1.daumcdn.net/cfile/cafe/998DE6355B978B2405" data-origin-width="580" data-origin-height="435"></div><p> </p><p><span data-ke-size="size16"> </span><span data-ke-size="size16">LCD를 전면과 같은 높이로 배치해보았습니다.</span></p><p><span data-ke-size="size16"> </span></p><p><span data-ke-size="size16">부족하지만 그래도 쓸만한 간이형 LC meter를 만들어 보았습니다.</span></p>
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공작실
캐패시터와 인덕터를 측정할 수 있는 간이형 LC meter(LC메터)를 만들어 봅시다.
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18.09.11 18:27
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