per
Veteran Member
As of I know, there is no computer that does not contain capacitors. So there is problably capacitors in every computer. Some times, old capacitors fail, and may explode or catch fire, and sometimes, manufacters just don't bother soldering on all of the capacitors. But what are they for, those small metallic containers that hold a small curent?
Things I'm unsure on, and would like to know more about:
1: There has been a coupple of reports about capacitors catching fire. But when do they usually do?
a. Durning powerup.
b. Durning runtime.
c. Durning shutdown (most likely not).
d. When exposed to wrong voltage/temperature levels.
e: Other (please explain).
2: What are they actually used for in most causes?
a: Filtering, to make sure there is no noise in the current.
b: Preventing current from going the wrong direction (on shutdown/powerup).
c: Charging up a high current for use with devices that usually uses high currents.
d: Backup power for some device.
e: Other (again, please explain).
3: Why does some manufacters not solder in all the capacitors in a PCB?
a: Capacitors might be expensive (for reduced manufacting price).
b: To make the device's lifetime shorter (have to buy a new one more often).
c: To freak out people like me.
d: They really don't care.
e: Other (yes, please explain)
4: As of the above statements, why does the devices still work?
a: Because some capacitors are left.
b: Because they really don't (random faults from time to time).
c: Because no capacitor are really needed (capacitors might be there just to make the device look fancy).
d: To make the device sell.
e: Other (Explain if you can)
Things I'm unsure on, and would like to know more about:
1: There has been a coupple of reports about capacitors catching fire. But when do they usually do?
a. Durning powerup.
b. Durning runtime.
c. Durning shutdown (most likely not).
d. When exposed to wrong voltage/temperature levels.
e: Other (please explain).
2: What are they actually used for in most causes?
a: Filtering, to make sure there is no noise in the current.
b: Preventing current from going the wrong direction (on shutdown/powerup).
c: Charging up a high current for use with devices that usually uses high currents.
d: Backup power for some device.
e: Other (again, please explain).
3: Why does some manufacters not solder in all the capacitors in a PCB?
a: Capacitors might be expensive (for reduced manufacting price).
b: To make the device's lifetime shorter (have to buy a new one more often).
c: To freak out people like me.
d: They really don't care.
e: Other (yes, please explain)
4: As of the above statements, why does the devices still work?
a: Because some capacitors are left.
b: Because they really don't (random faults from time to time).
c: Because no capacitor are really needed (capacitors might be there just to make the device look fancy).
d: To make the device sell.
e: Other (Explain if you can)