Archive for May, 2005

Eddy Board Success!

Sunday, May 29th, 2005

I used Eagle to design an new eddy sensor board.

The schematic (based on the WMS one):

Eddy sensor board schematic.

And the layout:

Eddy sensor board layout.

Pretty trivial 2 layer board. Had a small handful made over at PCB Express.

The parts all came from Digi-Key. The BOM breaks down like so:

Part Value Digi-Key P/N Manufacturer Manuf. P/N
C1 3300pf 100V 5% 399-1821-1-ND Kemet C430C332J1G5CA7200
C2 3300pf 100V 5% 399-1821-1-ND Kemet C430C332J1G5CA7200
C4 1mfd 25V 20% 399-1887-1-ND Kemet C440C105M5U5CA7200
D1 1N4148 1N4148DICT-ND Diodes, Inc. 1N4148-T
D2 1N4148 1N4148DICT-ND Diodes, Inc. 1N4148-T
J1 4 pin connector WM2702-ND Molex 22-11-2042
J2 2 pin connector WM4200-ND Molex 22-23-2021
LED1 RED 67-1105-ND Lumex SSL-LX5093ID
R1 9K09 1/4W 1% 9.09KXBK-ND Yageo MFR-25FBF-9K09
R2 1K8 1/4W 5% 1.8KQBK-ND Yageo CFR-25JB-1K8
R4 2K .15W 20% EYG23BK-ND Panasonic EVM-EYGA00B23
U1 Eddy Sensor Chip 497-2158-5-ND STMicroelectronics TDA0161DP
U2 Opto Coupler 4N35FS-ND Fairchild 4N35

Anywho, long story short, I soldered it together, stuck it in the machine and it worked! Although I did manage to bork the locations and sizes of the mounting holes! Way to go me!