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  3. Square Wave oscillator output error

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Square Wave oscillator output error

Electriconic
Electriconic over 15 years ago

Hi, hope i am posting this in the right section...i am currently working on this 160 hz design (warning its for an assignment) and C must be 100nf, RF must be 10k, R1 must be 4.7k, i need to calculate R value (47k) and then design this circuit, now i am strugglling to achieve the desired output of a square wave, am i doing something obviously wrong with the circuit design?

 

many thanks in advance

 

 

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  • oldmouldy
    oldmouldy over 15 years ago

    Check your supplies, looks like both IC pins might be at 2V, a 741 probably needs more like +/-5, +/-15 would be "traditional", note the the IC V+ is at the bottom. (V+ and V- don't want to be common!) Also let the simulation run a little longer to get the circuit running properly. Dump the IC=2 part on the output, set the IC property on C1 to 0, this will have it discharged at the start of simulation.

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  • oldmouldy
    oldmouldy over 15 years ago

    Check your supplies, looks like both IC pins might be at 2V, a 741 probably needs more like +/-5, +/-15 would be "traditional", note the the IC V+ is at the bottom. (V+ and V- don't want to be common!) Also let the simulation run a little longer to get the circuit running properly. Dump the IC=2 part on the output, set the IC property on C1 to 0, this will have it discharged at the start of simulation.

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