Power Supply

Input

noreply@blogger.com (Unknown) — Fri, 12 May 2006 00:22:00 -0700

AC input: General city electricity
The AC input power supply may divide into:
Linear adaptor (low frequency) power supply: The input voltage scope is small, the majority of sectors only have in the fixed input voltage +/-10%, like Norht America input voltage range: 120VAC +/-10% (108~132VAC), Japan input voltage range : 100VAC+/-10% (90~110VAC),
British input voltage range: 230VAC +/-10% (203~253VAC).
Even so, Linear power supply (low frequency) (Linear adaptor) has its advantage and the merit as follows:
Merit:
1.Lower price advantage: It’s only the pure low frequency silicon sheet steel transformer, in addition the simple circuit, several resistances, the electric capacity as well as the bridge type rectification then may complete, at present generally utilizes to the computer peripheral, consumer product and so on handset battery charger.
2.Because is low frequency, therefore Ripple & Noise extremely low, creates the disturbance
opportunity regarding the equipment to be extremely small, suits utilizes to fears ripple & noise
the disturbance product, like Audio & Video, network equipment…, CE authentication requests
which regarding European Union, nearly all may achieve.
Weakness:
1.The input voltage range butchers slightly, therefore mostly applies in the fixed place use, it is not suitable for portable product.
2. Low Efficient : The common Linear adaptor power supply, can only provide the working efficiency only can achieve approximately 40~50%. therefore regarding the user, uses for a long time, imperceptibly increases much waste, due to upward in the present environmental protection consciousness, perhaps in the near future, could eliminate.
3. The volume is big, weight heavy: Because the pure low frequency silicon sheet steel circles the copper wire function, therefore the volume is huge, weight also non- constant weight. Usual consumer product maker in order to reduce the cost, can use the low frequency power supply (Linear adaptor), but in present computer peripheral equipment extremely numerous , must provide the extremely big space for plug in.
4. When use Linear adaptor power supply main body temperature is much higher: Because the
efficiency is low, consumes the electrical energy transforms the heat energy, therefore will create Linear adaptor power supply main body temperature increment, but this provides the temperature, will be able to produce the carbon dioxide in the air, will create the environment the influence Shan Izhei a part, the American California environmental protection bureau (CEC) , for future the low frequency power supply (Linear adaptor) will eliminate through the bill
5. The multi- designs in outputs a smaller product, because the volume is enormous, non- constant weight, mostly only can use below 20W the product. In the big Wattage product, must be the fixed product.Like Audio & Video device, refrigerator, traditional type lamps and lanterns

Introduce power supply

noreply@blogger.com (Unknown) — Fri, 12 May 2006 00:21:00 -0700

All electric appliances product, all needs the power supply , to start its equipment. Therefore the power supply suffers with ours life week, is closely linked! Therefore each people all must have to have the understanding to the power supply! In order to avoid creates inconvenient which lives, as well as in security worrying! Generally in the power source supply semblance, can paste on the label, the user before the use must understand is which type power supply belongs to, how many is the input voltage? The output voltage also is how many, must confirm the correct specification, only then uses, avoids having the danger.

Input Voltage

noreply@blogger.com (Unknown) — Fri, 12 May 2006 00:20:00 -0700

If uses the low frequency power supply (Linear adaptor), input voltage 120VAC, must only be able to use in US, if attains to Europe (input voltage 230VAC) to use, will be able to create the power supply to burn down Otherwise if Europe will use the low frequency power supply(Linear adaptor), will attain to US to use, then completely will not be able to have the output

Desktop Adaptor

noreply@blogger.com (Unknown) — Fri, 12 May 2006 00:02:00 -0700

On table (Desktop): Many for big Wattage power supply, the power supply main body has the input AC power cord as well as the output DC power cable. The advantage is cannot occupy the too big plug space, but because must attach the AC power cord, therefore the price is higher.

Wall Mount Adaptor

noreply@blogger.com (Anonymous) — Fri, 12 May 2006 00:02:00 -0700

Many for small Wattage design.
Huge Wattage because the entire power supply volume changes in a big way, will be able to create in the plug fully occupies, the outward appearance also will change ugly
At present in the market condition more inputs plug includes:
US type (two flat or two flat + one circle / contains ground), the European type (two circles or two circles + ground) the British type (three flat/third Pin to have divide model sol as well as copper
nature/earth), the Australian type (caret shaped two is flat).

Open Frame

noreply@blogger.com (Unknown) — Fri, 12 May 2006 00:01:00 -0700

PC board module (Openframe): This type switching power supply, loads in the machine, again by connector leads the cable, in the product, the equipment seemingly, cannot appear has the power supply main body. The product, the equipment outward appearance is fine. But as a result of the product, the equipment volume request, must have to pay attention to the PC board module (Open frame) the size. Therefore the majority is specially has all most custom design. Moreover because the quantity are not certainly many, therefore the price many exteral power supply is higher.

DIN-Rail power supply

noreply@blogger.com (Unknown) — Fri, 12 May 2006 00:00:00 -0700

Also is the use in the industry use, entire Switching power supply loading on track, in order to help migration