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19th April 2008, 11:48 PM
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 I need help with simple circuit ???!!! I need help to do this circuit - I need some help to designing circuit that accept 5Vpp input sinusoid of variable frequency. The input signal is assumed to originate from source with 50 Ohm impedance . - The circuit to indicate when the input signal id < =5 KHz by turning off an LED when the input frequency Exceeds the specify value. In another words, The LED is to be on when frequency <= 5Khz ( +25%) or (-25%). -Circuit to consist of only Resisters, Capacitor and LED. Thanks a lot | |
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20th April 2008, 03:17 AM
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| Google for highpass RC filter.
__________________ --- The days of the digital watch are numbered. --- | |
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