| ??? 11/04/08 23:07 Modified: 11/04/08 23:08 Read: times |
#159672 - When the die alloys then... Responding to: ???'s previous message |
...the impedance drastically sinks and disspated heat tends to decrease to zero, even if big currents still flow. Usually, the transistor by this stops from becoming furtherly destroyed. Also, the protection relay at output disconnects the amplifier output from the load, making the big currents stop. Finally, you only have a destroyed transistor, where the feedback loop of amp isn't properly working.
You can find out very easily whether such a thermal destruction took place, just measure the impedance of all collector emitter junctions by the help of a simple Ohm-meter. Kai |
| Topic | Author | Date |
| Transistor failure question | 01/01/70 00:00 | |
| no guarantee on behaviour | 01/01/70 00:00 | |
| stronger | 01/01/70 00:00 | |
| and... | 01/01/70 00:00 | |
| Thermally destroyed power transistors... | 01/01/70 00:00 | |
| can be both way | 01/01/70 00:00 | |
| When the die alloys then... | 01/01/70 00:00 | |
| Assumptions | 01/01/70 00:00 | |
| Question for Andy | 01/01/70 00:00 | |
| the worst case is... | 01/01/70 00:00 | |
| Assumptions; Conclusions; Guesses | 01/01/70 00:00 | |
| Jan is saying | 01/01/70 00:00 | |
| Worst case | 01/01/70 00:00 | |
| Let the circumstances be any? | 01/01/70 00:00 | |
| Incorrect! | 01/01/70 00:00 | |
| Not entirely true | 01/01/70 00:00 | |
| That's the point! | 01/01/70 00:00 | |
| Oh Andy | 01/01/70 00:00 | |
| No, it wasn't | 01/01/70 00:00 | |
| explanation | 01/01/70 00:00 | |
Not at all... | 01/01/70 00:00 |