Integrator Reset multisim

[rachelgl]

Hi,

I'm relatively new to multisim. Is there a way to add a edge triggered reset pin to the VOLTAGE_INTEGRATOR block?

Thanks

Rachel 

[RER]

Hi Rachel,

I'm afraid that I do not fully understand your question. But you may be required to create a custom component. The process is relatively simple, especially if you have access to the component's SPICE model (something you should be able to obtain from the component manufacturer).

Here are is a useful tutorial and video to help you get started.

Creating a Custom Component in NI Multisim

Best wishes,

[OStep]

Rachel,

Unforutunately there are presently no reset options or pins on our integrator models.

However I managed to design a resetable integrator macromodel for you. The integration is done via a voltage controlled current source charging a 1F capacitor, so that the voltage across the capacitor is the integrated value.

The hysteresis switch resets the voltage when a certain reset value is reached. The reset value is not dynamically controlled via a pin but is coded into the model before the simulation commences. I left a note inside of the file to explain how to specify the reset value.

Specify the voltage to be interated on node "input" and the output (the integrated value) can be grabbed from the node "output"

[OStep]

I realize that you need a dynamically controlled reset but that's quite a bit more challenging to accomplish using a macromodel. I will try to find a solution if I have time.

[rachelgl]

Hi,

Figured this out a while back, I just made an opamp integrator with a reset switch being controlled by conditions set in an ABM block. Just thought i'd post it in case someone is looking for something similar in future.

Thanks for you help

Rachel