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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 kenbabyboy[/i] [br]please i want you to explain in detail how to connect the circuit, that talks about using phone to put on a light while it is ringing, to the phone line. I don't know where this phone line is located in a phone, so practically, I want to know how to connect the capacitor & the diode,D3 to the phone line. Also, I want you to explain the 2N27 Opto Isolator in detail Please, I want you to also explain for me in details how I can use my phone to switch on different applainces that are positioned far away from me. E.g I can stay in school and switch on/off an electric bulb in my house with the use of my phone. I wll love to see a circuit diagram for this. please, I need an urgent reply from you,thanks. [/quote]    Insert an Image File (GIF, JPG, JPEG, BMP, ZIP, PNG) Check here to include your profile signature.