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Old 9th March 2007, 08:07 AM   #1
Did it Himself
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Default TINA Slow?

I downloaded the TI version of TINA last night and drew out one of my amp projects. Nothing overly complcated.

When trying to observe AC signals on the Oscilloscope, it takes ages for anything to happen. Is this correct or is there something wrong with my machine? PSspice is normally nothing like this slow on my machine.
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Old 9th March 2007, 02:34 PM   #2
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Did you use the "Set Parameters" dialogue? (Analysis/Set Parameters)

Also -- it is often not necessary to have every reactive component included in the simulation -- eliminate the caps you use to minimize radio frequency interference, bypass caps, simplify the power supply or just use DC sources --
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Old 9th March 2007, 07:40 PM   #3
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The PSU I just used the battery component to get the voltage on the rails. I set no settings nor changed anything from default. Should I have done?

Even just putting the Voltmeter across the input sine source, the scope takes about a minute to draw one cycle of the 1kHz sinewave, about 2 squares of the 10 or so on the screen.
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Old 10th March 2007, 07:51 AM   #4
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Hi richie00boy

I have no more Tina-TI installed, but the oscilloscope in my Tina7 don't show this nuisance : it is good working.

I remember that Tina-TI is very limited in performance. So don't expect a free lunch as they sell it ...

I am very happy with Tina7.

Best regards

rephil
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Old 10th March 2007, 08:10 AM   #5
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Quote:
Originally posted by richie00boy
The PSU I just used the battery component to get the voltage on the rails. I set no settings nor changed anything from default. Should I have done?

Even just putting the Voltmeter across the input sine source, the scope takes about a minute to draw one cycle of the 1kHz sinewave, about 2 squares of the 10 or so on the screen.

It can be very subtle. You really should show the circuit here.

Jan Didden
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Old 17th March 2007, 05:44 PM   #6
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Here is the circuit:

Click the image to open in full size.

As said earlier, I just used the default settings on a fresh installation of TINA-TI v7. Even just looking at VM2 which is a simple voltmeter looking at the input sine, takes ages.
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Old 17th March 2007, 08:56 PM   #7
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Hi richie00boy,

looking at your schematic, it seems to me that R14 and P1 are not connected. Could you please check that point please and report if you have stil problems ?

Thank you

Best regards

rephil
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Old 17th March 2007, 09:32 PM   #8
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It's just an artefact of the export and that the pot legs are longer than resistor legs.

I had a look at the Set Parameters box and couldn't see anything that would really affect things except the transient timestep, but even that didn't look too bad.
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Old 17th March 2007, 09:39 PM   #9
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Quote:
Originally posted by richie00boy
It's just an artefact of the export and that the pot legs are longer than resistor legs.

I had a look at the Set Parameters box and couldn't see anything that would really affect things except the transient timestep, but even that didn't look too bad.

Instead of an ammeter, try deriving the current by measuring the microVolts across a one microOhm resistor.
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Old 17th March 2007, 10:25 PM   #10
rephil is offline rephil  Europe
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Hi richie00boy,

I have put your circuit in Tina7 and I have the following readings at once with the two multimeters : VM2=707,11mV and VM1=19,96V. I have put a sine in VG1 with a peak value of 1V.

I hope this helps.

Best regards

rephil
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