Difference between revisions of "PID1"
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[[Medialab_Documentation]] | [[Medialab_Documentation]] | ||
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| − | [[Image:Pid2_rev0_top.jpg|thumb| | + | [[Image:Pid2_rev0_top.jpg|thumb|PID1 Top Side]][[Image:Pid2_rev0_bot.jpg|thumb|PID1 bottom side]] |
==Identification== | ==Identification== | ||
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==Known Problems== | ==Known Problems== | ||
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* FERR and FOUT LEDs labels need to be swapped | * FERR and FOUT LEDs labels need to be swapped | ||
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* The P,I,D signals are amplified and mixed in the same stage - and so the amplified signals can't be viewed. | * The P,I,D signals are amplified and mixed in the same stage - and so the amplified signals can't be viewed. | ||
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| + | ==Designs== | ||
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| + | *[[Media:Pid1-021605.pdf| SCH 02-16-05]] | ||
| + | *[[Media:PID1T-021405.pdf | PCB Top Side : 02-14-05]] | ||
| + | *[[Media:PID1B-021405.pdf | PCB Bottom Side : 02-14-05]] | ||
Latest revision as of 02:29, 11 June 2005
PID1
Identification
- Board is labeled "medialab/pid1.pcb REV0"
- Board design date 021605
Known Problems
- FERR and FOUT LEDs labels need to be swapped
- The TEST POINT header has the P - I - D signals miss labeled the correct order is "Ferr, Fout, Fp, Fd, Fi" instead of "Ferr,Fout, Fd, Fi, Fp"
- Both the PID and POT boards are running hot - hotter than I would like.
- The OPA4134s use 16-20mA per package. This (plus the LEDs) largely explains the 47mA used by the PID board. At +-12V the opamp quiescent current causes 42C rise in the packages.
- The range of the gain adjustment for each of the P, I, D terms doesn't seem adequate
- The P,I,D signals are amplified and mixed in the same stage - and so the amplified signals can't be viewed.
