2n3904 transitor from class project
A nice picture of a 2n3904 transistor used in a class project power supply that was destroyed along with other components not shown after a probable short. Credit: Lucas T.
Archive for the ‘Transistors’ Category
2N3904 transistor from class project power supply
Monday, April 19th, 2010C945 transistor explodes in differential amp
Monday, January 18th, 2010
Transistor in amplifier explodes
Transistor casing piece
An unfortunate accident while probing one of the transistors in part of a differential amp circuit led to a related transistor exploding. Credit: edman007.
MJE 13001 explodes in a GMT-TR20 USB Charger
Monday, January 18th, 2010
MJE13001 in GMT-TR20 explodes
This transistor comes from a GMT-TR20 USB phone charger which was distributed with the L7, L9 and other phones. After the explosion a trace to the transistor was destroyed and the PCB was blackened. Wire was run to replace the damaged traces and after the transistor was replaced the charger worked again. Credit: http://gushh.net/blog
Xbox power supply failure damages pcb
Friday, November 27th, 2009
This appears to be an Xbox revision 1.1 where the power supply failure caused significant damage to the PCB. The vented capacitor in the picture is a 680uF/16V capacitor which shorted, damaged the FET, and led to the failure of the power plane. Ideally the power supply should sense failure conditions and shut down. The FET was a Philips 21N06. Credits: Ahmad Tabbouch of http://ultrakeet.com.au.
Dynapower DP-40205 with exploded FET
Wednesday, November 25th, 2009
DP-40205 top
Exploded FET
These pictures come from a Dynapower USA DP-40205 400W power supply. It appears the standby regulation failed and took out the FET pictured above and also the capacitor and resistor near the top of the fan. The exploded piece of the FET was rattling around the power supply when it was opened and the part that remained on the board was loose. It’s suspected the capacitor damage was from overvoltage when the regulator failed for unknown reasons. Credit: http://blog.kevtris.org/