background image

Science Fair

28-178.fm  Page 1  Tuesday, March 23, 1999  11:14 AM

Содержание Crystal Radio Kit

Страница 1: ...Science Fair 28 178 fm Page 1 Tuesday March 23 1999 11 14 AM...

Страница 2: ...W1 6DIHW 5XOHV 41 5HDG WKH GLUHFWLRQV EHIRUH XVLQJ1 ROORZ DOO GLUHFWLRQV DQG NHHS WKHP IRU UHIHUHQFH1 51 HHS RXQJ FKLOGUHQ DQG DQLPDOV DZD IURP WKH DUHD ZKLOH RX DUH DVVHPEOLQJ WKH SURMHFW1 61 6WRUH W...

Страница 3: ...IROORZLQJ LWHPV 1 Coil 1 Base 1 Tuning Knob 3 Screws 1 Variable Capacitor 1 Earphone 1 Red Ground Wire 1 Yellow Antenna Wire 1 Diode 3 Spring Connectors 1 Screw Cap Also Included 2 Stickers 28 178 fm...

Страница 4: ...1111111111111111111111111111111 3DJH 4 HVFULEHV W SLFDO FU VWDO UDGLR SUREOHPV DQG VROXWLRQV1 81 567 1 1 5 2 7 12 2 111111111111 3DJH 54 SODLQV WKH EDVLF SULQFLSOHV EHKLQG VHQGLQJ DQG UHFHLY0 LQJ UDGL...

Страница 5: ...R1 RI RVWRQ DOVR FRQGXFWHG H WHQ0 VLYH H SHULPHQWV DQG EHFDPH ZHOO NQRZQ IRU WKH 3 5 21 HWHFWRU ZKLFK HPSOR HG LQFLWH DQG FKDOFRS 0 ULWH1 HQHUDO 1 1 1 XQZRRG RI WKH 8161 UP GHYHORSHG D FDUERUXQGXP GH...

Страница 6: ...WULFLW PRYHV RQO LQ RQH GLUHF0 WLRQ WKURXJK WKH GLRGH1 RLO UDGLR0WXQLQJ FRLO PDGH E ZLQGLQJ HQDPHOHG FRSSHU ZLUH DURXQG D SODVWLF FRUH 3 WLPHV1 7KH OHDGV KDYH EHHQ VWULSSHG DQG WLQQHG VR WKH FDQ EH FR...

Страница 7: ...SH RI JURXQGLQJ VRXUFH DQG FUHDWH D FRPPRQ UHWXUQ IRU DQ HOHFWULFDO FLUFXLW1 6HH 81 567 1 1 5 2 7 12 2 RQ 3DJH 54 WR OHDUQ PRUH DERXW WKHVH FRPSRQHQWV DQG KRZ WKH ZRUN WRJHWKHU1 7R SXW WKH U VWDO 5DG...

Страница 8: ...RFDWH WKH WKUHH VSULQJ FRQ0 QHFWRUV1 51 QVHUW HDFK VSULQJ FRQQHF0 WRU QDUURZHG HQG ILUVW LQWR RQH RI WKH WKUHH KROHV RQ WKH EDVH1 61 3XVK GRZQ RQ HDFK VSULQJ FRQQHFWRU DQG WZLVW LW WR WKH ULJKW FORFNZ...

Страница 9: ...1 7XUQ WKH EDVH XSVLGH GRZQ1 51 3ODFH WKH YDULDEOH FDSDFLWRU DV VKRZQ LQ WKH EDVH VR WKH WKUHH KROHV RQ WKH FDSDFLWRU OLQH XS ZLWK WKH WKUHH KROHV RQ WKH EDVH1 LQW KHQ RX GR WKLV EH VXUH WKH ZLUH OHDG...

Страница 10: ...HQGLQJ WKH VSULQJ VOLJKWO WR RQH VLGH VR WKH ZLUH PDNHV FRQQHFWLRQV RQ ERWK VLGHV RI WKH VSULQJ DV VKRZQ 1 91 RQQHFW WKH RWKHU ZLUH WR WKH JURXQG VSULQJ FRQQHFWRU LQ WKH VDPH PDQQHU1 LQW R QRW FRQQHFW...

Страница 11: ...DS RYHU WKH VFUHZ DQG SUHVV GRZQ XQWLO WKH FDS LV IOXVK ZLWK WKH WXQLQJ NQRE1 RQQHFWLQJ WKH 5DGLR RLO 41 3UHVV WKH FRLO GRZQ LQWR WKH ZHOO XQWLO WKH FRLO FOLFNV LQWR SODFH1 51 RQQHFW RQH RI WKH FRLO Z...

Страница 12: ...R WKH GLRGH VSULQJ FRQQHFWRU DQG LQVHUW WKH RWKHU HQG LQWR WKH DQWHQ0 QD VSULQJ FRQQHFWRU1 LQW 0DNH VXUH WKDW WKH EODFN VWULSHV IDFH WR0 ZDUG WKH GLRGH VSULQJ FRQQHFWRU1 Antenna Spring Connector Diode...

Страница 13: ...46 77 1 7 53 21 41 8QZLQG WKH HQG RI WKH HDUSKRQH V ZLUH DERXW WZR LQFKHV VR WKHUH DUH WZR ZLUH OHDGV1 28 178 fm Page 13 Tuesday March 23 1999 11 14 AM...

Страница 14: ...DQG URXQG LUHV 1RWH RU FODULW WKH HDUSKRQH FRQQHFWLRQ LV QRW VKRZQ LQ WKLV VWHS1 41 RFDWH WKH UHG JURXQG DQG WKH HOORZ DQWHQQD ZLUHV1 51 WWDFK WKH VWULSSHG HQG RI WKH HOORZ DQWHQQD ZLUH WR WKH DQWHQQD...

Страница 15: ...DUJH PHWDO REMHFWV1 H VXJJHVW WDSLQJ LW XS KLJK RQ D ZDOO XVLQJ PDVN0 LQJ WDSH DV VKRZQ 1 61 WWDFK WKH VKRUW VWULSSHG HQG RI WKH JURXQG ZLUH WR WKH JURXQG VSULQJ FRQQHFWRU1 Antenna Spring Metal Pipe G...

Страница 16: ...H QHDU ZKHUH WKH UDGLR ZLOO EH XVHG1 DXWLRQ 6RPH SLSHV PD EH KRW VR DVN DQ DGXOW WR KHOS RX ZLWK WKLV SDUW RI WKH SURMHFW1 LQW I WKHUH LV QRW HQRXJK VWULSSHG EDUH ZLUH WR ZUDS DURXQG D SLSH DVN DQ DGX...

Страница 17: ...4 WWDFKLQJ WKH 6WLFNHUV 3HHO RII WKH SDSHU EDFNLQJ DQG SODFH WKH VWLFNHUV RQ RXU UDGLR DV VKRZQ KHUH1 28 178 fm Page 17 Tuesday March 23 1999 11 14 AM...

Страница 18: ...7 21 2QFH RX KDYH DVVHPEOHG WKH U VWDO 5DGLR SODFH WKH HDU0 SKRQH LQ RXU HDU DQG WXUQ WKH WXQLQJ NQRE EDFN DQG IRUWK XQWLO RX SLFN XS WKH VWURQJHVW VLJQDO1 28 178 fm Page 18 Tuesday March 23 1999 11...

Страница 19: ...KH ZLUHV DUH DWWDFKHG FRUUHFWO DQG WKDW QRQH RI WKH ZLUHV DUH ORRVH1 0DNH VXUH WKDW WKH ORRVH HQG RI WKH DQWHQQD ZLUH GRHV QRW WRXFK DQ RWKHU FRQQHFWLRQ1 URXQG ZLUH GRHV QRW PDNH D JRRG FRQQHF0 WLRQ1...

Страница 20: ...RXW DV ORQJ DV LW FDQ EH DQG LV DV KLJK DERYH WKH JURXQG DV SRVVLEOH1 6HW WKH UDGLR XS RQ WKH KLJKHVW IORRU ZKHUH RX OLYH1 7U SODFLQJ WKH DQWHQQD ZLUH LQ GLI0 IHUHQW SRVLWLRQV ERWK YHUWLFDOO DQG KRUL...

Страница 21: ...7KHUH DUH D ORW RI GLDOV DQG VZLWFKHV DQG HTXLSPHQW LQFOXGLQJ SOD HUV PLFURSKRQHV DQG KXQ0 GUHGV RI V1 0U1 RQHV OHWV RX WDON LQWR WKH PLFURSKRQH1 KHQ RX WDON LQWR RQH RI WKH PLFURSKRQHV RXU ZRUGV JR L...

Страница 22: ...LW PLJKW ORRN VRPHWKLQJ OLNH WKLV 7KH VWDWLRQ V FDUULHU ZDYH LV DOVR D UDGLR ZDYH ZKLFK ORRNV VRPHWKLQJ OLNH WKLV 7KH WUDQVPLWWHU FRPELQHV WKH WZR GLIIHUHQW HQHUJ ZDYHV FUHDWLQJ D EURDGFDVW VLJQDO ZDY...

Страница 23: ...RDGFDVW E VWDWLRQ LV UHFHLYHG E WKH DQWHQQD RQ RXU UDGLR1 7KH DQWHQQD LV FRQQHFWHG WR WKH WXQHU FLUFXLW RI WKH UDGLR WKH FRLO RI ZLUH DQG WKH YDULDEOH FDSDFLWRU FRQQHFWHG WR0 JHWKHU 1 V RX PRYH WKH WX...

Страница 24: ...LFK LQFOXGHV WKH FRLO DQG WKH YDUL0 DEOH FDSDFLWRU VHOHFWV D WXQLQJ IUHTXHQF ILOWHULQJ RXW RWKHU IUHTXHQFLHV1 61 7KH GLRGH SDVVHV WKH VLJQDO LQ RQH GLUHFWLRQ1 71 6RXQGV IORZ LQWR WKH HDUSKRQH1 81 7KH...

Страница 25: ...RSOH JLYH FUHGLW IRU EXLOGLQJ WKH ILUVW VXFFHVVIXO UDGLR WR DQ WDOLDQ LQYHQWRU QDPHG XJOLHPR 0DUFRQL ZKR EXLOW RQ WKH ZRUN RI RWK0 HU VFLHQWLVWV1 Q 4 8 KH VHQW WHOHJUDSK VLJQDOV GRWV DQG GDVKHV WKURXJ...

Страница 26: ...HG DQ HOHFWURPDJQHWLF ZDYH EHFDXVH DQ HOHFWURPDJQHWLF IRUFH JHQ0 HUDWHV LW1 OHFWURPDJQHWLF HQ0 HUJ OHDYHV LWV VRXUFH LQ VWUDLJKW OLQHV DQG LV FDOOHG UD0 GLDWLRQ1 LJKW DQG UDGLR ZDYHV DUH GLIIHUHQW IRU...

Страница 27: ...UHQJWKV GHSHQG0 LQJ RQ WKH GLVWDQFH WR WKH VRXUFH WKH PLVW LV VWLOO PRYLQJ DZD IURP WKH VSUD QR OH1 OHFWULFDO ILHOGV DUH VLPLODU WKH FORVHU RX DUH WR WKH VRXUFH RI D ILHOG VXFK DV D UDGLR EURDGFDVW WR...

Страница 28: ...XVXDOO RQH RQ RXU WHOHYLVLRQ DQG UDGLRV KDYH RQH1 Q DQWHQQD VRPHWLPHV KDV D VSHFLDO VKDSH EXW EDVLFDOO LW LV DQ HOHFWULFDO FRQGXF0 WRU WKDW LV FRQQHFWHG WR DQ RVFLOODWRU DQG LV IUHH WR EURDG0 FDVW RU...

Страница 29: ...FNV IRU DOO RI WKH OHWWHUV DQG QXPHUDOV FDOOHG WKH 0RUVH FRGH1 RX GR QRW KDYH WR XVH DQ HOHFWULFDO WHOHJUDSK WR VHQG 0RU0 VH FRGH PHVVDJHV RX FDQ PDNH WKHVH VLJQDOV ZLWK OLJKW VRXQG VTXLUWV RI ZDWHU R...

Страница 30: ...B 1 1 B B 1 1 B B 1 1 UURU 1 1 1 1 1 1 1 1 1 1 1 B 1 1 B 6WDUW 6LJQDO B 1 B 1 B QG RI 0HVVDJH 20 1 B 1 B 1 DLW 1 B 1 1 1 8QGHUVWRRG 1 1 1 B 1 QWHUURJDWRU 2 4XHVWLRQ 1 1 B 1 B PHUJHQF 6LOHQFH 1 1 1 1 B...

Страница 31: ...DYH RU DOWHUQDWLQJ FXU0 UHQW ZKRVH PRGXODWLRQV DUH XVHG DV VLJQDOV LQ UDGLR DQG 79 FKDOFRS ULWH FRSSHU0LURQ VXOILGH RIWHQ XVHG DV WKH FU VWDO LQ HDUO FU VWDO GHWHFWRUV FU VWDO GHWHFWRU D PLQHUDO RU FU...

Страница 32: ...WK RI DQ HOHFWULFDO FXUUHQW LQ0 FOXGLQJ WKH VRXUFH RI HOHFWULFDO HQHUJ HOHFWURPDJQHWLF HQHUJ IRUPV RI UDGLDQW HQHUJ VXFK DV UDGLR ZDYHV OLJKW ZDYHV KHDW ZDYHV 0UD V JDPPD UD V DQG FRVPLF UD V HOHFWURP...

Страница 33: ...WKH DOSKDEHW XVLQJ D VHULHV RI ORQJ DQG VKRUW VLJQDOV RVFLOODWH WR VZLQJ EDFN DQG IRUWK VWHDGLO RVFLOODWRU D GHYLFH WKDW JHQHUDWHV DOWHUQDWLQJ FXUUHQW RU SRZHU S UROXVLWH RIWHQ XVHG DV WKH FU VWDO LQ...

Страница 34: ...DO VRXQG ZDYHV LQWR DQRWKHU W SH RI VLJQDO HOHFWURPDJQHWLF ZDYHV DQG VHQGV LW RXW WR D UHFHLYHU WXQHU FLUFXLW D FLUFXLW XVHG WR VHOHFW VLJQDOV RI D SDUWLF0 XODU IUHTXHQF IRU FRQYHUVLRQ YDULDEOH FDSDFL...

Страница 35: ...68 127 6 28 178 fm Page 35 Tuesday March 23 1999 11 14 AM...

Страница 36: ...O DW LWV RSWLRQ XQOHVV RWKHUZLVH SURYLGHG E ODZ D FRUUHFW WKH GHIHFW E SURGXFW UHSDLU ZLWKRXW FKDUJH IRU SDUWV DQG ODERU E UHSODFH WKH SURGXFW ZLWK RQH RI WKH VDPH RU VLPLODU GHVLJQ RU F UHIXQG WKH SX...

Отзывы: