Post Reply 
97S low battery Indicator with no display
02-28-2023, 01:51 PM (This post was last modified: 02-28-2023 02:20 PM by John Garza (3665).)
Post: #11
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
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: 97S low battery Indicator with no display - John Garza (3665) - 02-28-2023 01:51 PM



User(s) browsing this thread: 3 Guest(s)