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| glossary:glossary_c [2019/12/12 07:16] – minor edits tgerbic | glossary:glossary_c [2019/12/13 06:27] – [Capacitor] add a couple of returns to break up the big paragraph tgerbic |
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| ===== Capacitor ===== | ===== Capacitor ===== |
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| A capacitor is a basic electronic component and can have many uses. Small value capacitors are often used in an electrical signal path to block DC voltage and only let AC signals/voltages through. Small value capacitors may also be used with other components to make up filter circuits to pass or limit certain frequencies along a wire. Large value capacitors are often used for short term electrical storage or to smooth out AC ripple in power supplies that get their power from an AC input. Combining several large capacitors, or using one or more “super” capacitors, may be used in a model railroad engine to provide momentary power when crossing parts of a track (dirty track or gaps in track for example) which would normally cause the engine to stutter or stop. The common term “bypass capacitor” refers to adding a small value capacitor directly across the power and ground pins of an IC in order to help remove AC ripple or noise from the DC voltage used by the IC. | A capacitor is a basic electronic component and can have many uses. Small value capacitors are often used in an electrical signal path to block DC voltage and only let AC signals/voltages through. Small value capacitors may also be used with other components to make up filter circuits to pass or limit certain frequencies along a wire. Large value capacitors are often used for short term electrical storage or to smooth out AC ripple in power supplies that get their power from an AC input. Combining several large capacitors, or using one or more “super” capacitors, may be used in a model railroad engine to provide momentary power when crossing parts of a track (dirty track or gaps in track for example) which would normally cause the engine to stutter or stop. |
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| | The common term “bypass capacitor” refers to adding a small value capacitor directly across the power and ground pins of an IC in order to help remove AC ripple or noise from the DC voltage used by the IC. |
| Capacitors can be made from may types of materials or processes such as mica, tantalum, polystyrene, electrolytic or ceramic. Each type has its uses and one type generally will not work in place of other types. Usually the type is called out on a parts list or schematic, or based on the value and tolerance, it may be assumed to be a certain type. Capacitor values are measured in “Farads”, generally microfarads (µF), nanofarads (nF) or picofarads (pF). \\ [[:glossary:capacitor|Main article]] | Capacitors can be made from may types of materials or processes such as mica, tantalum, polystyrene, electrolytic or ceramic. Each type has its uses and one type generally will not work in place of other types. Usually the type is called out on a parts list or schematic, or based on the value and tolerance, it may be assumed to be a certain type. Capacitor values are measured in “Farads”, generally microfarads (µF), nanofarads (nF) or picofarads (pF). \\ [[:glossary:capacitor|Main article]] |
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