Comments on: BlackBerry Pearl Flip 8220 unveiled http://www.fonearena.com/blog/2008/09/17/blackberry-pearl-flip-8220-unveiled.html The Mobile Blog Sat, 21 Nov 2009 18:26:17 -0500 http://wordpress.org/?v=2.8.6 hourly 1 By: Aman http://www.fonearena.com/blog/2008/09/17/blackberry-pearl-flip-8220-unveiled.html/comment-page-1#comment-72148 Aman Fri, 19 Sep 2008 17:12:42 +0000 http://www.fonearena.com/blog/?p=1592#comment-72148 well this phone can really bring in a revolution..the over hyped iphone will go down the drain well this phone can really bring in a revolution..the over hyped iphone will go down the drain

]]> By: roshan http://www.fonearena.com/blog/2008/09/17/blackberry-pearl-flip-8220-unveiled.html/comment-page-1#comment-72132 roshan Fri, 19 Sep 2008 05:36:50 +0000 http://www.fonearena.com/blog/?p=1592#comment-72132 - A thyristor is a four-layer semiconductor device, consisting of alternating P type and N type materials (PNPN). A thyristor usually has three electrodes: an anode, a cathode, and a gate (control electrode). The most common type of thyristor is the silicon-controlled rectifier (SCR). When the cathode is negatively charged relative to the anode, no current flows until a pulse is applied to the gate. Then the SCR begins to conduct, and continues to conduct until the voltage between the cathode and anode is reversed or reduced below a certain threshold value. Using this type of thyristor, large amounts of power can be switched or controlled using a small triggering current or voltage. Thyristors are used in motor speed controls, light dimmers, pressure-control systems, and liquid-level regulators. - A thyristor is a four-layer semiconductor device, consisting of alternating P type and N type materials (PNPN). A thyristor usually has three electrodes: an anode, a cathode, and a gate (control electrode).
The most common type of thyristor is the silicon-controlled rectifier (SCR). When the cathode is negatively charged relative to the anode, no current flows until a pulse is applied to the gate. Then the SCR begins to conduct, and continues to conduct until the voltage between the cathode and anode is reversed or reduced below a certain threshold value. Using this type of thyristor, large amounts of power can be switched or controlled using a small triggering current or voltage.

Thyristors are used in motor speed controls, light dimmers, pressure-control systems, and liquid-level regulators.

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