if you want to get rid of all these constrains you might go for a charge tranfer voltage regulator (i.e. from maxim). they are efficient and for low current stable enough.
you might still desire to turn it off when not necesary to further save battery life.
we have not used in wsn apps yet, they generate some noise due to switching the cap at frequencies around a few hundred kHz. you might have to check that for your system, although more likely not a problem.
protecting rechargable batteries from deep discharge is another issue, you might want to use a battery switch to prevent that as well. for long term use that is.
let me know if more details are needed.
best regards,
claro.
you might still desire to turn it off when not necesary to further save battery life.
we have not used in wsn apps yet, they generate some noise due to switching the cap at frequencies around a few hundred kHz. you might have to check that for your system, although more likely not a problem.
protecting rechargable batteries from deep discharge is another issue, you might want to use a battery switch to prevent that as well. for long term use that is.
let me know if more details are needed.
best regards,
claro.
Well, the rechargeable batteries haven't enough voltage ( 1.2-1.3V ) but
really good current (80-90 mA each one, but in series, so it is the
current of the sum..), the normal batteries have good voltage but not
enough current (only 20-30 mA)..and i need minimum 2.7 V and 70 mA for
the flash usage.
Is there anyone who has solved this kind of issue?
And also on the programming board i can source 5V but only 30 mA...
Any suggestion is really wellcome!
Thanks in advance
Daniele
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