http://www.elecfree.com/electronic/voltage-sensitive-oscillator-by-2n4891/ Sun, 21 Mar 2010 14:18:23 +0000 http://wordpress.org/?v=2.6.5 http://www.elecfree.com/electronic/voltage-sensitive-oscillator-by-2n4891/#comment-1277 Voltage Indicator Alarm using 2N4891 | ???? ??????? ?????????????? Mon, 15 Dec 2008 03:42:24 +0000 http://www.elecfree.com/electronic/?p=3396#comment-1277 [...] ?????Voltage ??? Battery ??????????????????????????? ?????? Voltage Sensitive Oscillator Circuit ????????????????? ??? UJT ????? 2N4891 ??????????????? ??????????? ???????????????????????????? ????? Vin ???????????? Vz ??? D1 ??????????? Turn- OFF ?????????? ????????????????Voltage???Battery ?????????????????????? ??????????????????????????????????????????????????? ??????? [...] [...] ?????Voltage ??? Battery ??????????????????????????? ?????? Voltage Sensitive Oscillator Circuit ????????????????? ??? UJT ????? 2N4891 ??????????????? ??????????? ???????????????????????????? ????? Vin ???????????? Vz ??? D1 ??????????? Turn- OFF ?????????? ????????????????Voltage???Battery ?????????????????????? ??????????????????????????????????????????????????? ??????? [...]

]]> http://www.elecfree.com/electronic/voltage-sensitive-oscillator-by-2n4891/#comment-977 Voltage Sensitive Oscillator by 2N4891 | วงจร โครงงาน อิเล็กทรอนิกส์ Mon, 22 Sep 2008 03:20:17 +0000 http://www.elecfree.com/electronic/?p=3396#comment-977 [...] When Voltage of , Battery desperately will know get with this circuit. It is Voltage Sensitive Oscillator Circuit. By use pillar equipment be UJT 2N4891 equipment numbers are a little. A friend may like. By this circuit will beep alarm generator. วงจรตรวจแรงดันเกินกำหนด แล้วมีเสียงเตือน ง่ายดี อ่านต่อ [...] [...] When Voltage of , Battery desperately will know get with this circuit. It is Voltage Sensitive Oscillator Circuit. By use pillar equipment be UJT 2N4891 equipment numbers are a little. A friend may like. By this circuit will beep alarm generator. วงจรตรวจแรงดันเกินกำหนด แล้วมีเสียงเตือน ง่ายดี อ่านต่อ [...]

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