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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by n/a[/i] [br]Hi > I need help on how to connect the output of a 555 timer to the gate of a SCR. Is it necessary to used a resistor in series|.. The operating voltage is 12 V and the Scr is switching a very low load, 50 ma. Also, if the gate wire is very long from the 555 timer, is it necessary to use a low value Cap. to avoid interference false triggering.. Thanks for any help Mario (Edit...Moved to Electronics/Other) Edited by - Aaron Cake on Jun 16 2003 09:31:07 AM [/quote]    Insert an Image File (GIF, JPG, JPEG, BMP, ZIP, PNG) Check here to include your profile signature.