Difference between revisions of "POT4a"
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[[Medialab Documentation | Documentation HOME]] | [[Medialab Documentation | Documentation HOME]] | ||
| − | Also see : [[POT4]] | + | Also see : [[POT4]] and [[POT4b]] |
==Revisions from POT4== | ==Revisions from POT4== | ||
| − | *add 5pin, 1.25mm header for strain | + | *add 5pin, 1.25mm header for strain gauge |
*removed unused input resistors and capacitors | *removed unused input resistors and capacitors | ||
*On POT4 a 1meg resistor was stacked on CC3 - this resistor added to SCH and PCB | *On POT4 a 1meg resistor was stacked on CC3 - this resistor added to SCH and PCB | ||
| Line 12: | Line 12: | ||
*2nd order filter is now NON-Inverting | *2nd order filter is now NON-Inverting | ||
*input cable shield can be connected to COM via 0603 resistor | *input cable shield can be connected to COM via 0603 resistor | ||
| − | *changed PCB pattern for output driver caps to CAP200-SQ ( | + | *changed PCB pattern for output driver caps to CAP200-SQ (accurately represents component shape) |
*changed 0805 output cable CAP to 1206. Panasonic X5R series @ 25V 1uf to 10uF! | *changed 0805 output cable CAP to 1206. Panasonic X5R series @ 25V 1uf to 10uF! | ||
*added 10 turn POT for variable gain (optional) | *added 10 turn POT for variable gain (optional) | ||
| − | * | + | *changed CD2 (0.1u in derivative circuit) to 1206 size (was 0805) |
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==Power Supply== | ==Power Supply== | ||
Revision as of 20:17, 22 June 2005
Revisions from POT4
- add 5pin, 1.25mm header for strain gauge
- removed unused input resistors and capacitors
- On POT4 a 1meg resistor was stacked on CC3 - this resistor added to SCH and PCB
- removed 4th order filter, changed 3way jumper to 2way
- 2nd order filter is now NON-Inverting
- input cable shield can be connected to COM via 0603 resistor
- changed PCB pattern for output driver caps to CAP200-SQ (accurately represents component shape)
- changed 0805 output cable CAP to 1206. Panasonic X5R series @ 25V 1uf to 10uF!
- added 10 turn POT for variable gain (optional)
- changed CD2 (0.1u in derivative circuit) to 1206 size (was 0805)
Power Supply
- +12V, GND, -12V recommend
- Supply current < 50mA (20mA typical)
- Maximum supply voltage is +-15V
Identification
- POT4a is a green PCB with white silk screen on two sides.
- Dimensions 1.75" x 0.85"
- Two mounting holes (diameter = 0.125"), top side clearance > 0.25"
- The color of DL1,DL2 indicates the input configuration of the board
Led Indicators
- (DL1, DL2) : A pair of single LEDs indicate the present of power. These LEDs are aligned with the power input to the boards.
- DK1 : The intensity of this dual RED/GREEN LED indicates the voltage of the "position signal".
