Difference between revisions of "Upd 2x0 217 power board"
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*[[Upd_pcb | PCB]] [[Aiw_hardware | Hardware]] [[AIW_assembly | Assembly]] [[PFMENU DOCS | PFCmdMenu]] [[iochan]] [[Upd_merge_history | Merge]] | *[[Upd_pcb | PCB]] [[Aiw_hardware | Hardware]] [[AIW_assembly | Assembly]] [[PFMENU DOCS | PFCmdMenu]] [[iochan]] [[Upd_merge_history | Merge]] | ||
*PCA : [[Upd_2x0_218_controller | SC/MC 218]] [[Upd_2x0_217_power_board| FET 217]] [[Wip4a-spi | Swiffy]] | *PCA : [[Upd_2x0_218_controller | SC/MC 218]] [[Upd_2x0_217_power_board| FET 217]] [[Wip4a-spi | Swiffy]] | ||
| − | =FET 2x0-217 PCA= | + | =All BOARDS require Coin cell charger circuit= |
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| + | =FET 2x0-217 PCA (power board)= | ||
== 200-217-001== | == 200-217-001== | ||
*3-28-09 : removed from [[AK-WB2]] w/exploded power FET | *3-28-09 : removed from [[AK-WB2]] w/exploded power FET | ||
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== 200-217-005== | == 200-217-005== | ||
Revision as of 03:14, 15 June 2009
Contents
All BOARDS require Coin cell charger circuit
FET 2x0-217 PCA (power board)
200-217-001
- 3-28-09 : removed from AK-WB2 w/exploded power FET
todo
- remove damaged power fet
- test other power fets (safety fets are on and will complicate this.)
- if all other tests are positive, apply 10 volts with a 100mA current limit
- if successful, attach to state controller with "testjig" software build and apply 20V limited to 200mA
- if successful replace missing FET and repeat above power tests.
200-217-003
- 4-27-09 : requires new board testing.
200-217-005
- 6-13-09 : added coin cell recharger circuit. not confident it will charge the batteries.
- before installed - cell voltages : 2.639, 2.628 total 5.270
- across R23=2.3mV; across D13=620mV; LDO output=5.955V.
- 6-1-09 : location CEB lab - used for code dev.
- 3-1-09 : Vclamp circuit failed (permanently on) when MPJA power supplied failed.
todo
- replace PFET and power resistor
200-217-006
- 4-2-09 : offsets 3001, 2990
- 4-2-09 : started bench test at 3:20 am, completed 2pm - works well
200-217-007
- 4-6-09 : started bench test at 2:10 am
- 4-6-09 : offsets 2914, 2823
- 4-6-09 : 9:15pm ended test successfully, wiport had disconnected and needs power cylce to reconnect.
200-217-009
- 4-1-09 : removed from WB1 - possibly damaged
- 3-28-09 : measured battery voltage at zero and 1.8 volts
- 3-28-09 : measured terminal to terminal resistance of safety FETs, 38 and 72 ohms
- 3-1-09 : safety fets are not engaged.
todo
- replace coin cells (use adhesive to secure batteries to PCA)
200-217-010
- 4-6-09 : 25amp benchtest for 30 mis with 218-005
- 4-2-09 : measured coin cells at 2.7++ each.
- 4-2-09 : bench test for 1.5 hrs with 218-010
