97S low battery Indicator with no display
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02-28-2023, 01:51 PM
(This post was last modified: 02-28-2023 02:20 PM by John Garza (3665).)
Post: #11
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RE: 97S low battery Indicator with no display
VSS: slowly rises from zero to 0.03V
VB: slowly rises from zero to 0.06V VGG: -5.8V Vbattery: 5.12V (Voltage of battery out of circuit) Note: VSS and VB may have risen a little farther, but I only ran the power for 5 sec for each reading. Looks like something is draining the voltages across the board. Maybe C6 ? But then that wouldn't explain the transistor overheating. Maybe if the base-emitter junction was faulty in Q2, the battery would drain to ground through it, thereby causing heat ?? -J |
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