Spice - pomoc

[Daniel Valuch]

da sa poslat obrazok ako to vyzera? predpokladam, ze to bude problem s 
konvergenciou...


Kamil Rezac wrote:

>Preji co nejmene neprijemne pondelni pracovni rano... :)
>
>O vikendu jsem si zkousel hrat se simulatorem Spice Opus a pro
>zajimavost jsem do nej prepsal dva low-pass filtry, ktere pouzivame na
>robotovi (senzory) a skutecne funguji. Ovsem v simulatoru mi jeden z
>nich (filtr_bad.cir, viz priloha) pri TRAN analyze vytvori
>nekolikasetvoltovy bordel (AC analyza je u obou v poradku). Oba filtry
>se lisi jen hodnotami soucastek (FilterLab navrh), v popisu schematu
>chyba neni (kdyz hodnoty z _bad prepisu na hodnoty z _ok, tak to zase
>chodi dobre). Muzete mi nekdo zkusenejsi poradit, v cem je zrada?
>
>Predem dik za rady
>KR
>  
>
>------------------------------------------------------------------------
>
>Accelerometer input filter and amplifier
>*
>* SINGLE-POLE OPERATIONAL AMPLIFIER MACRO-MODEL
>* connections:      non-inverting input
>*                   |   inverting input
>*                   |   |   output
>*                   |   |   |
>.SUBCKT OPAMP1      1   2   6
>* INPUT IMPEDANCE
>RIN     1          2          10MEG
>* DC GAIN (100K) AND POLE 1 (100HZ)
>EP1	3 0	1 2	100K
>RP1	3	4	1K
>CP1	4	0	1.5915UF
>* OUTPUT BUFFER AND RESISTANCE
>EOUT	5 0	4 0	1
>ROUT	5	6	10
>.ENDS
>*
>*
>* Circuit
>*
>Vin   1 0 AC  1 pulse(0 1 0 1ms 1ms 1ms ) 
>
>* Laser filter
>
>R31    1  31  5.1k
>R32   31  32  16k
>C31   32   0  100n
>C32   31  33  150n
>XOP31 32  34  33  OPAMP1
>R33   34   0  10k
>R34   34  33  8.2k
>R35   33  35  3.3k
>R36   35  36  9.1k
>C33   36  0   100n
>C34   35  37  330n
>XOP32 36  37  37  OPAMP1
>
>
>
>.control
>
>*ac lin 100 0.01 5k
>*plot vm(37)
>tran 0.001ms 10ms
>plot vm(37) vm(1)
>
>.endc
>.end
>
>
>  
>
>------------------------------------------------------------------------
>
>Accelerometer input filter and amplifier
>*
>* SINGLE-POLE OPERATIONAL AMPLIFIER MACRO-MODEL
>* connections:      non-inverting input
>*                   |   inverting input
>*                   |   |   output
>*                   |   |   |
>.SUBCKT OPAMP1      1   2   6
>* INPUT IMPEDANCE
>RIN     1          2          10MEG
>* DC GAIN (100K) AND POLE 1 (100HZ)
>EP1	3 0	1 2	100K
>RP1	3	4	1K
>CP1	4	0	1.5915UF
>* OUTPUT BUFFER AND RESISTANCE
>EOUT	5 0	4 0	1
>ROUT	5	6	10
>.ENDS
>*
>*
>* Circuit
>*
>Vin   1 0 AC  1 pulse(0 1 0 1ms 1ms 1ms ) 
>
>* Laser filter
>
>R31    1  31  5.6k
>R32   31  32  7.5k
>C31   32   0  47n
>C32   31  33  330n
>XOP31 32  34  33  OPAMP1
>R33   34   0  10k
>R34   34  33  8.2k
>R35   33  35  15k
>R36   35  36  18k
>C33   36  0   47n
>C34   35  37  56n
>XOP32 36  37  37  OPAMP1
>
>
>
>.control
>
>*ac lin 100 0.01 5k
>*plot vm(37)
>tran 0.001ms 10ms
>plot vm(37) vm(1)
>
>.endc
>.end
>
>
>  
>
>------------------------------------------------------------------------
>
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