Running Canons on low volts

[Guest peepshow]

I daresay this is all nonsense...........

Has anyone done any experiments in deliberately running Canon DSLR's on a lower voltage than normal?

If it will run lower this might lower noise on higher ISO settings for example.

One would need a variable volt power supply to try it.

[+Graham]

Cannot see this will work.

I am no electronics expert but i would hazzerd a guess that the first thing that happens is the voltage is stepped down or smoothed out to suit the componants inside the camera.

If you reduce the input voltage it will simply not work.

The chip must be designed to run at a spacific voltage so reducing this would surely mean it just would not work.

Just my take on it.

[Astrocookie]

I have made a battery eliminator for my 300D.

 

It's powered from a simple circuit to knock the 12V supply voltage down to 8.1V

 

I ramped it down to as low as it would operate but didn't see any difference.

 

I did however see an improvement by eliminating the heat from the battery.

 

Reducing the current may have some effect but I haven't tried this.

 

Let me know if you need a simple adjustable power supply circuit diagram etc..

 

I vaguely remember seeing a mod to reduce amp glow, similar to the Philips webcam mod.

 

Not fully recovered from the terror of removing the IR filter so wont be digging around inside the camera again.

 

Hope this help.

 

Paul

[Guest peepshow]

Thanks for trying low volts Paul and offer of cct, but I do have such a cct.

Interesting that battery becomes hot and you use seperate supply.

 

I chickened out of removing my IR filter.

[Guest Alien 13]

I built an adapter using an LM317 and found it wouldnt power the camera below 7.2V and was more stable at 7.5V, i have wondered though what the maximum voltage the camera can accept i know my battery grip with the AA adapter supplies in excess of 9V.

 

Alan