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Old 21st December 2004, 08:36 PM   (permalink)
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hey
i am building a system and need help with one of my signals.

i have a square wave about 5Vpeak and when i connect it to my 8051 and use it, the signal drops down to few mV, i tried putting a 741 op-amp as a buffer, even that does not help.
can u suggest any other way i could solve this problem
thx
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Old 21st December 2004, 08:53 PM   (permalink)
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Something does'nt sound right, show your circuit or more info
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Old 21st December 2004, 09:25 PM   (permalink)
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Maybe this processor pin programmed as output...
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Old 22nd December 2004, 01:37 PM   (permalink)
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Couple it?
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