Recent content by Phiber

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    electromagnets

    thank you very much people.. I appreciate your help. thank you
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    electromagnets

    thank you very much.. I was just asking because im not really sure of what I would use. I saw some electromagnets where they used magnetic wires that are uncovered with insulators and some are covered. thank you very much sir
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    electromagnets

    question. how do i make an electromagnet? do i need the magnetic wire to be insulated? and can a nail be used as a core for it?? thank you for your answers.
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    cellphone battery charger

    ok.. noted.. guess I cant use rechargeable batteries for my amp circuit. thank you very much
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    cellphone battery charger

    one question please, if I connect a voltage output from a power supply to a cellphone battery, will the battery start charging? thanks
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    programming arduino

    maybe your do while loop is causing an infinite loop. your condition is 'while(1>0)' and 1 will always be greater than 0 so it just loop back to the delay?
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    Model train railway project w/o pic

    one more question sir. if a reed switch goes back to an open position after the magnet in front of the train moves away. what can I use in order to continue the process of sending voltage to my 555 timer if the circuit will be opened? thanks
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    Model train railway project w/o pic

    thanks you very much Mr. Bob. now I can do my project =)
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    Model train railway project w/o pic

    if the pulse width for 0deg = 1.5ms and 90deg = 2.5ms, will it go back to 0degrees if I sent a 1.5ms pulse width if it is in the 90deg position? is that right Mr. Bob? sorry its my first time using servo.
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    Model train railway project w/o pic

    @CDRIVE - yes. im referring to the crossing gate @BobL - you mean two 555 timer? one for going up and another for going down?
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    how to calculate voltage drop at R1 , R2 ,R3??

    try source transformation on the 2 voltage sources the resistor will now be parallel to the current source. current source 1= b1/r1 (for the right voltage source) do the same for the left Vsource. [Csource2 = b2/r3] the circuit will now be 2 current source and 3 resistors in parallel...
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    Model train railway project w/o pic

    we were making a project, model train railway, without the use of microcontrollers and PIC, I would just like to ask, what can I use for the lever that goes down when the train is near and goes back up again after the train passes. any ideas for what I can use for that? thanks
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