Electronics/capacitors question?

Electronics/capacitors question?

I have some blown capacitors on a mainboard but don't have the correct value replacements but pretty close.

Blown ones are 10v 1000microF

I have 6.3v 100microF and 10v 1500microF.

If anyone knows the tollerance or which I have is best to use....or not?

Cheers

Update:

I meant 6.3v 1000microF

Update 2:

Just found some 1000microF 16V

Think these mught be the ones but is that Voltage too High???

6 Answers

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  • 1 decade ago
    Favorite Answer

    Voltage must be equal or higher, unless you can check the applied voltage is less than 6.3 v use the 10v caps.

  • MarkG
    Lv 7
    1 decade ago

    The voltage rating of a cap is its limit for working voltage. Meaning that a 6.3V cap can only be used where you expect voltages no higher than 6.3 V.

    You can replace a cap with another which has a high voltage rating.

    Since the original is 10v you should not use the 6.3v unles you can verify that the circuit is operating at or below 6.3V... The 1500uf could be used with the following considerations.

    For filter caps you have a large tolerance of value and can usually install higher values without an issue. However is the cap is used for decoupling a typical value of 0.001uf is used +/- .001uf.

    No knowing a cap function and blindly changing a cap value, I would limit the change to no more than 30%.

  • 1 decade ago

    You can replace a faulty capacitor with one which has an equal or higher working voltage and an equal or higher capacitance, so your 10V 1500 microfarad capacitors are suitable.

    But the question should be why did the capacitors blow in the first place ? Were they under-specified ? If so your replacements may not be adequate either.

    Source(s): MEng and 30 year experience as an Electrical & Electronic Design Engineer
  • johal
    Lv 4
    3 years ago

    Your English replace right into somewhat contorted yet i think of I understand your questions. Forgive me if I misinterpreted your questions. Storing electric powered power: Capacitors are standard yet are actually not the only way. Charging a battery is an glaring option. Storing capacity in a flywheel is yet differently. Motor-pushed flywheels are the approach utilized in very great uinterruptable capacity aspects for homes (to start a diesel generator whilst the capacity is going out). Turning 12 volts DC into a hundred and twenty volts AC isn't high priced in any respect. you ought to purchase a a hundred watt capacity inverter for you motor vehicle for per hazard $50. capacity inverters cycle the 12 volts by using a swap to style a sq. wave. The sq. wave is then stepped as much as a hundred and twenty volts AC by using capacity of a transformer. to maintain the capacity inverter small, easy, and espresso priced, the swap operates at substantial greater than 60 Hertz. The a hundred and twenty volts AC is then rectified, filtered, and gone by using a 60 Hertz oscillator.

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  • 1 decade ago

    use the 1000 micro farad 16 volt cap

    it will work just fine

    such high values may be only for filtering purpose in that case you can increase the capacitor value but increasing the cap value will stress the diodes

    so instead of pondering on what the cap is used for replace it with the 100 micro 16 volt cap

    see if its the same type cap

    you can check this by the physical appearence

    your 16 v cap will be slightly bigger than the original cap

  • Mikey
    Lv 6
    1 decade ago

    Really depends on what they are used for in the circuit as to how tight the tolerances need to be.

    W/O knowing your best bet is the 10v 1500

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