Difference between revisions of "Practice Making a PCB"

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This page contains a practice assignment for making a schematic and a pcb. Refer to the [[PCB_Artist]] tutorial for information on how to finish it.
This page contains a practice assignment for making a schematic and a pcb. Refer to the [[PCB_Artist]] tutorial for information on how to finish it.


We are going to make a leaky integrator schematic and pcb. You can read about leaky integrators [[Operational Amplifiers (Op-Amps)|here]] in the integrator section. This circuit will consist of 2 resistors, 1 capacitor and an op-amp (such as LT1001CN8).
We are going to make a leaky integrator schematic and pcb. You can read about leaky integrators [[Operational Amplifiers (Op-Amps)#Integrator|here]] in the integrator section. This circuit will consist of 2 resistors, 1 capacitor and an op-amp (such as LT1001CN8).


== Make the Schematic ==
== Make the Schematic ==
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Search for a datasheet of the LT1001CN8 precision operational amplifier. (You can search on google, digikey...etc).
Search for a datasheet of the LT1001CN8 precision operational amplifier. (You can search on google, digikey...etc).


To create the component, you can either draw your own schematic for the 8pin op-amp as shown above OR you can find the existing schematic symbol under one of the existing libraries. If you make your own, make sure you have 8 pins.
To create the schematic symbol, you can either draw your own schematic for the 8pin op-amp as shown above OR you can find the existing schematic symbol under one of the existing libraries (hint op-amps are integrated circuits(IC)). If you make your own, make sure you have 8 pins.


You will have to make the pcb footprint for this op-amp using the tools from the tutorial.
You will have to make the pcb footprint for this op-amp using the tools from the tutorial.


Create a component with the pins connected as shown in this schematic.
Create a component and name the pins as shown in this schematic (ie IN-,IN+,etc)


You will need to add extra text for Vin and Vout.
You will need to add extra text for Vin and Vout.
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== Make the PCB ==
== Make the PCB ==
Now we will make the PCB of this circuit.
Now we will make the PCB of this circuit.
To be sure we are on the same page, download the complete schematic [[Media:ME333_lab2_complete_schematic.sch] and incomplete PCB [[Media:ME333_lab2_incomplete_pcb.sch].


The finished board should look like this:
The finished board should look like this:
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[[Image:complete_me333_pcb.jpg]]
[[Image:complete_me333_pcb.jpg]]


Use 'Translate to PCB' as in the tutorial to convert your schematic into a pcb.
But it is missing some components? and traces?

Fill them in.
In the PCB configuration
*Create a 2x2 in pre-defined board
*Basic 2 Layer Standard
*Default Layers and Board Parameters
*Special Requirement - Student
*Name your board with a 1 week turn around time and quantity of 1.

On your board, make sure you:
*Add 5 extra pins for Vin, Vout, V+, V- and GND
*Add silkscreen text for these 5 extra pins
*Change the trace size between GND and the op-amp to have a width of 0.05
*5 vias as shown above
*1 mitered track as shown above

Latest revision as of 07:44, 10 January 2010

Practice Making a PCB

This page contains a practice assignment for making a schematic and a pcb. Refer to the PCB_Artist tutorial for information on how to finish it.

We are going to make a leaky integrator schematic and pcb. You can read about leaky integrators here in the integrator section. This circuit will consist of 2 resistors, 1 capacitor and an op-amp (such as LT1001CN8).

Make the Schematic

We are going to make the following schematic.

ME333 Lab2 schematic.jpg

You already have the resistor and capacitor components, but the op-amp component does not exist yet.

Search for a datasheet of the LT1001CN8 precision operational amplifier. (You can search on google, digikey...etc).

To create the schematic symbol, you can either draw your own schematic for the 8pin op-amp as shown above OR you can find the existing schematic symbol under one of the existing libraries (hint op-amps are integrated circuits(IC)). If you make your own, make sure you have 8 pins.

You will have to make the pcb footprint for this op-amp using the tools from the tutorial.

Create a component and name the pins as shown in this schematic (ie IN-,IN+,etc)

You will need to add extra text for Vin and Vout.

Make the PCB

Now we will make the PCB of this circuit.

The finished board should look like this:

Complete me333 pcb.jpg

Use 'Translate to PCB' as in the tutorial to convert your schematic into a pcb.

In the PCB configuration

  • Create a 2x2 in pre-defined board
  • Basic 2 Layer Standard
  • Default Layers and Board Parameters
  • Special Requirement - Student
  • Name your board with a 1 week turn around time and quantity of 1.

On your board, make sure you:

  • Add 5 extra pins for Vin, Vout, V+, V- and GND
  • Add silkscreen text for these 5 extra pins
  • Change the trace size between GND and the op-amp to have a width of 0.05
  • 5 vias as shown above
  • 1 mitered track as shown above