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Re: [Help-gnucap] Simple Capacitor Charging Simulation
From: |
a r |
Subject: |
Re: [Help-gnucap] Simple Capacitor Charging Simulation |
Date: |
Wed, 1 Aug 2007 02:38:16 +0100 |
Make sure the capacitor is discharged at t=0.
Simple Capacitor Charger
V1 1 0 pwl (0 0, 1m 50V)
C1 2 0 10uF
R1 1 2 100kOhm
.print tran V(2)
.op
.tran .5 10
.end
On 8/1/07, Crispy <address@hidden> wrote:
> Hello,
>
> I'm trying to model a simple capacitor charging circuit by monitoring
> the voltage across the capacitor over a period of time. The test
> circuit would have a 50V DC supply, connected in series with a 100kOhm
> resistor and a 10uF capacitor. The time constant for this should come
> out to be 1 second, so I think monitoring the voltage across the
> capacitor every 1/2 second for 10 seconds is reasonable to show the
> principle. Here's the netlist I'm using:
> --------
> Simple Capacitor Charger
> V1 1 0 50V
> C1 2 0 10uF
> R1 1 2 100kOhm
> .print tran V(2)
> .op
> .tran .5 10
> .end
> --------
> When I run it with the command "gnucap -b ./capacitorcharge.ckt", I get
> this data:
> --------
> Simple Capacitor Charger
> #
> 27.
> #Time V(2)
> 0. 50.
> 0.5 50.
> 1. 50.
> 1.5 50.
> 2. 50.
> 2.5 50.
> 3. 50.
> 3.5 50.
> 4. 50.
> 4.5 50.
> 5. 50.
> 5.5 50.
> 6. 50.
> 6.5 50.
> 7. 50.
> 7.5 50.
> 8. 50.
> 8.5 50.
> 9. 50.
> 9.5 50.
> 10. 50.
> ---------
> What's wrong with the netlist or command that makes it do this?
>
> Thanks a lot,
> Chris
>
>
>
>
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