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 | SMALL ELECTRONIC KEYPAD COMBINATION DIGITAL HOME WALL SECURITY SAFE HAND GUN BOX |  |  | US $79.99 | 25d 10h 2m |
 | ELECTRONIC SAFE WIT KEYPAD DIGITAL FOR HOME , SECURITY SAFE HAND GUN , DOCUMENT | | | US $59.85 | 18d 5h 49m |
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 | California Master Tools Electronic Digital Safe Jewelery Home Security Money SM | | | US $49.99 | 15d 13h 19m |
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Small Electronic Digital
Should I use a voltage converter or a transformer to operate a small US battery charger for my digital camera?
I would like to bring my US compatible battery charger to Paris. I have read that electronic devices require a transformer instead of the less expensive converter. A converter allegedly does not create a sine wave alternating current, but a chopped up approximation of a sine wave. Electronic devices require the sine wave. Is the battery charger "electronic". Anybody actually try this to know the results? Thanks in advance for any advice anyone offers.
Check the input voltage of your battery charger. Most of the modern ones will work happily with any voltage between 100 and 250. In which case you will be OK, although you will of course need an adapter for the plug.
Otherwise, by far the cheapest solution would be to simply buy a battery charger in Paris. That will cost you only a few euros - much lighter and cheaper than a transformer or converter.
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| SMALL ELECTRONIC KEYPAD COMBINATION DIGITAL HOME WALL SECURITY SAFE HAND GUN BOX | | | US $79.99 | 25d 10h 2m |
| ELECTRONIC SAFE WIT KEYPAD DIGITAL FOR HOME , SECURITY SAFE HAND GUN , DOCUMENT | | | US $59.85 | 18d 5h 49m |
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| California Master Tools Electronic Digital Safe Jewelery Home Security Money SM | | | US $49.99 | 15d 13h 19m |
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Why do all electronic meters have a metal foil pasted inside on the back cover?
If you open any small digital multimeter or any small equipment which has a plastic cover, it has a small aluminum foil pasted on inside of the back cover and when you put the cover in place the foil touches a spring soldered on the PCB ( printed circuit board ) of the meter. Thus the foil is connected to the ground line of the PCB through a foil. What is the function of this arrangement?
It is an electrostatic screen. It prevents electrical noise interfering with the electronics in the multimeter and it prevents noise from the digital circuits in the meter leaking out into the environment.
You probably would not find this in an older meter. Electrical screening in modern equipment is better because of stricter regulations on electromagnetic compatibility and higher clock frequencies in digital equipment.
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