2023-04-02 22:56:49 +02:00
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* noise of a resistive divider
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* noise of a resistive divider, lower resistor noiseless
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* noise of a resistive divider with filter
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* 'set behavior = lta' is required
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V1 1 0 dc 0 ac 1
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R1 1 2 10k
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R2 2 0 10k
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V11 11 0 dc 0 ac 1
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R11 11 12 10k
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2023-10-24 17:07:54 +02:00
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R12 12 0 10k noisy=0
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2023-04-02 22:56:49 +02:00
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V21 21 0 dc 0 ac 1
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R21 21 22 10k
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R22 22 0 10k
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C22 22 0 1u
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.control
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2023-10-11 09:52:44 +02:00
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noise v(2) V1 dec 10 1 100k 1
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2023-04-02 22:56:49 +02:00
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echo **resistive divider**
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print onoise_total inoise_total
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setplot noise1
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print onoise_spectrum[0] inoise_spectrum[0]
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noise v(12) V11 dec 10 1 100k
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echo **resistive divider, lower resistor noiseless**
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print onoise_total inoise_total
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setplot noise3
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print onoise_spectrum[0] inoise_spectrum[0]
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noise v(22) V21 dec 10 1 100k
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echo **resistive divider with filter**
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print onoise_total inoise_total
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setplot noise5
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print onoise_spectrum[0] inoise_spectrum[0]
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set xbrushwidth=2
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plot onoise_spectrum inoise_spectrum xlimit 1 1e5
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.endc
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.end
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