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ceramic capacitors with electrolytic capacitor

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balamanikandan

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hi,

" If the circuit to be bypassed generates large current pulses (like the power switch), more capacitance is required. A good choice would be an aluminum electrolytic bypassed with a film and ceramic capacitor"

here, what is the role of ceramic capacitor?


Please clarify .
 

Adding various capacitor technologies and values in parallel improves performance in a wider range of frequencies. Ceramic capacitors have low ESR and ESL and therefore they provide low impedance at high frequency where aluminum electrolytic do not.
 
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