The AAA battery is a US dry battery standard that is compatible with China's No. 7 battery or Taiwan's No. 4 battery standard. The battery is cylindrical, 43.6 mm high and 10.1 mm in diameter. Is a common battery, smaller than AA batteries. Commonly used in small size, low power consumption of electronic products such as MP3 player MP3, small remote control. There are both disposable alkaline batteries and rechargeable nickel-metal hydride and lithium-ion batteries.
technical standard:
The battery is generally divided into: 1, 2, 3, 5, 7 number, of which 5 and 7 are especially commonly used.
The so-called AA battery is the 5th battery, and the AAA battery is the 7th battery! AA and AAA are all descriptions of the battery model.
size:
AA is what we usually call the 5th battery. The general size is: 14mm in diameter and 49mm in height. AAA is what we usually call the 7th battery. The general size is 10mm in diameter and 44mm in height.
The difference between AAA battery and AA battery :
In addition to the different sizes of the above two, the AAA battery and the AA battery have different storage capacities. The same type of battery, because the AA battery, that is, the No. 5 battery is larger than the AAA battery (No. 7 battery), the AA battery is more electric than the AA battery. More than a part of the AAA battery.
RCA Cables can be used to connect a variety of audio and video devices, such as camcorders, to TVs or stereos to speakers. Most high-end camcorders have all three RCA jacks, so the signal entering or leaving the device goes through three separate channels-one video and two audio-resulting in a high-quality transfer. Lower-end camcorders usually have only one jack, called a stereo jack, which combines all three channels. This results in lower-quality transfers because the signal is compressed. In either case, RCA cables transmit analog, or non-digital, signals. Because of this, they cannot be plugged directly into a computer or other digital device. RCA cables connect amplifiers to all sorts of devices.
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Quality of RCA Cables
Several factors affect the quality, price, and performance of RCA cables:
Materials: The connectors on RCA cables are often gold, silver, or copper. As you might expect, the gold connectors are the most expensive. They're also better than silver and copper connectors at preventing oxidation, but not as good at electrical conductivity. The silver connectors are best for electrical conductivity with the copper cables coming in a close second and the gold cables falling far behind. Other suitable materials are nickel, zinc, and tin.
Cable Length: Cable length has a negative effect on signal quality. Buy a cable that is only as long as you need it to make the connection for the best signal quality.
Shielding: A well-shielded cable delivers a better signal than one that lacks robust shielding.
The other end of the cable: If possible, match the material used in the other end of the cable to the material used in the connectors. Don't match tin with gold or silver with gold. Those combinations can cause problems because of an electrolytic reaction.
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