Capacitors: Outside Resistance vs. Integrated Resistance

If the resistor is connected across the capacitor, it allows the capacitor to discharge after the power is removed. If not, maybe someone else can explain.

spin capacitor? is it saying a outline is cylinder?

and the resistor is parallel with the cap? if so the 1# is right.

= it allows the capacitor to discharge after the power is removed.

if not, not resistor cross it, and you can measure a large resistance, there will be

1) the capacitor was a bad one. it has a large leackage, do change it,

2) there may some aother appliance cross it. check it after disconnect to sse if its good.

3 its impossible that the resistor connect in serial with the cap.( I guess its a 160uf/440v)

thas all

Some capacitors include an internal high resistance bleeder resistor for safety. These are designed to safely discharge high voltage capacitors over a specified time (seconds to minutes). Instead of being externally connected across the capacitor, these are built with the bleeder resistor connected in parallel with the capacitor terminals. The resistor is physically located within the plastic or metal housing of the capacitor. Examples of capacitors that are built with internal bleeders include all commercial electrical utility Power Factor Correction (PFC) capacitors, some voltage doubler capacitors used in microwave ovens, and some motor run capacitors used with split phase induction motors and high pressure halide lighting ballasts.

By integrating the resistor inside the capacitor case, the resistor is protected from the elements (as in outdoor PFC caps). By adding internal bleeder resistors, high voltage capacitors, which might otherwise retain a dangerous or even fatal level of energy, will become completely discharged and safe to touch within a few seconds to a few minutes. Because the bleeder resistor is always connected across the capacitor, it bleeds any dangerous voltages that might otherwise develop (through dielectric relaxation) on a capacitor that has recently been removed from HV service.

Note that even capacitors with internal bleeder resistors should still be safely discharged by shorting the capacitor terminals before handling in case the internal resistor has failed and become an open circuit. More than one person has been accidentally electrocuted by relying on a bleeder resistor that was no longer functional...

Bert

I think Dan is saying that he has removed the capacitor and has measured it with with an ohmmeter, and that it was removed from the circuit. Too, believe that the capacitor is used in conjunction with a washing machine.

The procedure I use is: out of circuit, short the two leads to discharge. Connect the ohmmeter (prefer an analog) maybe on the X100 range. Initially you should observe what appears to show that it is shorted for a second or so (normal), then the resistance will increase. It should end up near infinity (normal). In any event 12500 ohms indicates that it is probably leaky.

How do you measure the resistance of the capacitor? If you use an ohmmeter and the capacitor contains an internal bleed resistor, you should reach the steady state value of the resistor. If the capacitor does not contain a by-pass resistor, you should see a very low value of restance when first connecting the meter. The resistance should increase, reaching a high value of many megohms as the ohmmeter charges the capacitor. I think this would be the expected response regardless of your ethnic background.

Capacitors don't have a resistance value; you are probably referring to the bleed resistor. Remove it and check with a capacitor tester, if it is suspect.