Recent content by edwardgith

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    Help on delay for the 4060 oscillator used in the fridge door alarm project

                Hi, i have been studying the datasheet for the 4060 counter and oscillator used in the fridge door alarm project found in this website.I have tried to read the datasheet and i have seen that the delay time is obtained by the equation (2.2Rc*Cc).On substituting the values of C1 and...
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    motion detector or optical circuit

    Hi,i would like to obtain either a motion detector circuit or an optical circuit  that can be used with the fridge door alarm.This is so as to prevent the alarm from going off when one spends a long time  either removing or putting something in the fridge.
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    Design of Fridge alarm control system

    Hi, i would like to use the fridge door alarm project available in this website.I would like for it to incorporate a mechanism that activates a motor automatically shuts the frdge door when the alarm goes off.In addition i would like the circuit to also have a sensor mechanism that senses when...
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    theory on fridge door alarm

    Hi,I would like to know the theory behind the variation of delay time with the changing of the values of C1 and/or the other component in the fridge door alarm project.Could anyone please assist me?
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    Fridge door alarm

    Hi,I would like to use the fridge door alarm available in your website.In addition to the alarm going off i would like to obtain a circiut that automatically activates a motor to shut the fridge door.Could you be of any assistance?My e-mail address is [email protected]. Your assistance will...
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