Comments on: LED Tone Generator by IC LM555 http://www.elecfree.com/electronic/led-tone-generator-by-ic-lm555/ Sat, 20 Mar 2010 10:15:01 +0000 http://wordpress.org/?v=2.6.5 By: Simple Metronome using transistor | Circuit Project Electronic http://www.elecfree.com/electronic/led-tone-generator-by-ic-lm555/#comment-1919 Simple Metronome using transistor | Circuit Project Electronic Sat, 05 Sep 2009 18:53:14 +0000 http://www.elecfree.com/electronic/?p=3287#comment-1919 [...] circuit about Signal Generator Simple Tone Oscillator Generator by 2N2222 Tone Generator by 2N4891 LED Tone Generator by IC LM555 Tone Burst Generator by LM555 Stereo Test Tone Generator with LM324 and LM1458 More Electronics KIT [...] [...] circuit about Signal Generator Simple Tone Oscillator Generator by 2N2222 Tone Generator by 2N4891 LED Tone Generator by IC LM555 Tone Burst Generator by LM555 Stereo Test Tone Generator with LM324 and LM1458 More Electronics KIT [...]

]]> By: Easy Lamp Flasher to warn | Circuit Project Electronic http://www.elecfree.com/electronic/led-tone-generator-by-ic-lm555/#comment-1685 Easy Lamp Flasher to warn | Circuit Project Electronic Tue, 16 Jun 2009 16:19:06 +0000 http://www.elecfree.com/electronic/?p=3287#comment-1685 [...] Alarm More circuit about Emergency siren More lamp flashing alarm circuit Tone Generator by 2N4891 LED Tone Generator by IC LM555 Tone Burst Generator by [...] [...] Alarm More circuit about Emergency siren More lamp flashing alarm circuit Tone Generator by 2N4891 LED Tone Generator by IC LM555 Tone Burst Generator by [...]

]]> By: LED Tone Generator with IC NE555 | Wiparat Circuit Electronics http://www.elecfree.com/electronic/led-tone-generator-by-ic-lm555/#comment-1291 LED Tone Generator with IC NE555 | Wiparat Circuit Electronics Mon, 15 Dec 2008 17:09:12 +0000 http://www.elecfree.com/electronic/?p=3287#comment-1291 [...] Read more Source var addthis_pub = 'wiparat'; [...] [...] Read more Source var addthis_pub = ‘wiparat’; [...]

]]> By: LED Tone Generator by IC LM555 | วงจร โครงงาน อิเล็กทรอนิกส์ http://www.elecfree.com/electronic/led-tone-generator-by-ic-lm555/#comment-814 LED Tone Generator by IC LM555 | วงจร โครงงาน อิเล็กทรอนิกส์ Fri, 29 Aug 2008 02:15:08 +0000 http://www.elecfree.com/electronic/?p=3287#comment-814 [...] This circuit use test waves light receiver signal pulse change LED1. For R1 and C1 be formed control the rate pulse of the circuit… วงจรส่งสัญญาณเสียงผ่าน LED แปลกดี อ่านต่อและดูวงจร [...] [...] This circuit use test waves light receiver signal pulse change LED1. For R1 and C1 be formed control the rate pulse of the circuit… วงจรส่งสัญญาณเสียงผ่าน LED แปลกดี อ่านต่อและดูวงจร [...]

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