Custom Fixture Designer Demonstration Guide
Step by step guide of Web Fixture Designer for RM10 bobbin with flying lead and toggle clamp
Step1 - Example - 10 pin RM10 Bobbin with flying lead and clamp.
This page will describe the steps needed to design a fixture for this simple 10 pin RM10 pulse transformer with a standard RM 0.1" grid footprint, using the online Custom Fixture Designer.
We will use 10 recessed spring probes for the main contacts, and add an additional Red/Black socket pair for the flying lead connection.
4 x 3 mm holes to mount a toggle clamp will also be used
Step 2 - Dimensional drawings and pin configurations
First refer to your datasheet, or manual measurements to find the separations of the pin contacts you need for your design.
As this is an RM type, all the pin locations are on a 0.1" (2.54mm) grid as shown to the right - the foot print on an RM10 transformer.
Even within the basic RM10 type there can be variations in the actual pins fitted.
In our example we will only be fitting the 10 red pins indicated.
Step 3 - Grid Selection
From the pin layout we can see that a 0.1" inch grid size will accommodate all the pin placements we need for the RM10 bobbin.
In fact ,you will find that this applies to any RM bobbin, (RM4, RM6, RM8, RM12 etc.) .
All RM bobbins have pins located on a 0.1" grid
Step 4 - Select Parts
Select a connector type from the drop down menu.
You can use several different types on one design, if you wish.
Here we will start with the 100-162C - a spring probe that is recessed by 2mm below the surface for the 10 x RM10 pin connections
Step 5 - Place Connectors onto Grid
Click on the grid to place the connector.
You can click placed connectors again to remove them..
The grey square areas show restricted areas where additional parts cannot be placed.
Here we have placed
a) 10 x spring probes (100-162C)
These are recessed 2mm beneath the surface for the RM10 bobbin
b) 4 x 3mm holes (100-164A)
for mounting your own a toggle clamp later
c) 1x Red/Black 4mm connector pair (100-163A)
for adding your own leads to connect to the transformer flying lead.
Step 6 - Select Wiring to AT Nodes
Next you need to connect your connectors to your chosen AT test nodes.
You can either
a, click and hold on the connector, and drag and drop these manually onto each node
or
b, use the Auto wiring button to instantly connect them to the nearest node
Finally enter your deign name and click finish.
Step 7 - Finished design and costing
A summary of your design. a unique design ID and and costings will now be shown for your design.
This can be recalled later at any time.
If you would like email confirmation of this costing as a formal quote, then please click "email me a formal quotation"
Step 8 - Build and print custom fixture
This design was then manufactured and is shown to the right.
The 4 x 3mm holes were used to mount a toggle clamp as shown. This hold the test part in place and ensures good contact to the 10 spring probes used.
The Red/Black Socket pair are used to provide a manual connection for the flying lead that forms one of the windings in the transformer.
