Re: A Battery Warning query

Prometheus@xxxxxxxxxxxxxxxxxxxx writes:

>The camera will use a regulator(s) to supply the various circuits inside
>it with power. If it is a simple linear reg. then it will run warmer
>with a higher battery voltage because it has to drop more volts, the
>current is unaltered although it is taking higher power from the
>battery. If it is a switching reg. then for higher a battery voltage
>the input current will reduce thus maintaining a consistent power
>dissipation in the reg. and power consumption from the battery. Since
>switching regs are much more efficient and can operate where the input
>is less than the required output (or both +ve & -ve lines are required)
>they are preferentially used.

For the electronics power, you're probably right. But the electronic
flash circuitry probably does not go through the regulator, because the
current demand is so high and because the supply voltage doesn't need to
be regulated. Similarly, motors may be powered directly from the supply
voltage instead of regulated power.

Dave
.

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