what is the difference between 5v capacitor and 5v battery
Answer Posted / kitna baji
Capacitor - DC characteristics - A capacitor can store a DC
charge, but charge will decay, and this decay can be set
via a Time constant - add R in series. So in that respect
a capacitor can be used as a pseudo battery, albeit likely
that the charge will decay much sooner than a battery will,
and will not have the same capacity to supply I as a
battery. Can be used to hold up DC PSU's briefly in event
of brown-outs.
Capacitor - AC characteritics - passes DC signals so is
used in RC HP/LP filters, tuned ccts, supply decoupling etc.
Battery- no AC characteristics to speak of. DC
characteristics are it's able to supply a steady voltage
for a varying load current (within reason) for a specified
Ahrs. Takes longer to charge than a capacitor due to fact
is has greater capacity than a capacitor.
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