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The answer to this question depends on the application. Generally no - manufacturers of devices design the components precisely, and if they've used a 35uf cap, they've probably done it for a reason. In an audio application the change of a capacitor value will give you a different tonal quality compared to the 35uF cap, though this isn't always a bad thing, though I wouldn't recommend changing it unless you're sure of the effect on the signal. In a power supply application, the capacitors are used to limit something known as ripple current. In this application the higher the capacitor value the lower the ripple current, which is something that is usually a good thing. If you want a more detailed answer i'd need to know more about the circuit you are working on.

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14y ago
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Wiki User

11y ago

In general, no, you can not replace a 1200uF 35v capacitor on your TV with a 1000uF 35v capacitor.

Each capacitor is selected based on the design of the specific circuit it is used in. This size capacitor is probably used in the power supply. Having a smaller capacitor will increase the ripple seen by the filter, and it might decrease the headroom seen by the regulator.

That said, it might work, but it might not. You may find that it works under normal conditions, but that it does not work at design limitations for power input, such as line voltage - 10%

Also, electrolytic capacitors have an additional rating - RMS current. Used in a power supply, they have ripple. Well, that ripple represent changing voltage which represents changing current. The capacitor is designed, not only with voltage and capacitance in mind, but also with current in mind. If you increase the ripple, you are going to increase the current, so you need to take that into account.

Unless the circuit is for an very sensitive system in the TV , this substitution would probably work. You really need to know the circuit it is in.

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10y ago

No. The capacitance is fixed and cannot be adjusted. You must select a different capacitor.

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Daniel Tetteh

Lvl 2
1y ago

Yes

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