I would like to construct a circuit to simultaneously power 2 Canon a480 digital cameras. The wallwart (ACK800) that Canon sells for this camera outputs 3.2 volts and supplies up to 1.5 amps. However purchasing two of these would be expensive. I am proposing to use a surplus wall wart I have (9.5 volts DC, 2.1 amps) in conjunction with a circuit containing 2 LM317T voltage regulators to power both cameras. The circuit I have drawn is shown below.
I have constructed this circuit on a breadboard, albeit powered by a 9 volt battery, and it seems to work. After adjusting the pots I can get 3.2 volts out of both LM317T's. I would appreciate your review of this circuit. Is anything unnecessary (e.g. C3) or is anything missing? Would a 9.5 volt, 2.1 amp wall wart be OK to power the circuit or would something different be better in terms of voltage/amps or heating of the two LM317Ts? Do you think I will need to heatsink the LM317Ts? Would it be better to power both cameras from one voltage regulator of higher amp capacity? As you can probably tell, this is my first real adventure into electronics.
Thanks
Tim
**broken link removed**
I have constructed this circuit on a breadboard, albeit powered by a 9 volt battery, and it seems to work. After adjusting the pots I can get 3.2 volts out of both LM317T's. I would appreciate your review of this circuit. Is anything unnecessary (e.g. C3) or is anything missing? Would a 9.5 volt, 2.1 amp wall wart be OK to power the circuit or would something different be better in terms of voltage/amps or heating of the two LM317Ts? Do you think I will need to heatsink the LM317Ts? Would it be better to power both cameras from one voltage regulator of higher amp capacity? As you can probably tell, this is my first real adventure into electronics.
Thanks
Tim
**broken link removed**
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