Here are some more information for Switch Adapters:

Basics tips for DELL INSPIRON 1000 adapter buying

The Basics when Looking for an Hp DC359A Adapter.

1) Output Specs Voltage and milli-Amps

2) Regulated /Un-Regulate

3) Connector plug size/Output Polarity

1) Output Voltage and milli-Amps

Try and Find your specifications for your Hp DC359A Adapter. On the old adapter, Device wishing to supply or specification page in an owners manual. The specs are usually given as volts and milliAmps (mA). Always try and find a exact match of specs. This is the safest way to go. Where an exact match is not available a couple general rules of thumb to find a workable adapter.

Choose the closest voltage available . Safer to go lower the higher. Some devices can handle higher without damage but many will not take it. If you choose lower generally the worse that would happen is it would not supply adequate voltage and equipment would not normally be damaged.

Choose milliAmps equal or higher than required

2) Regulated (Switching) or Unregulated (non-switching) Output

Most AC adapters are unregulated, Voltage output of the power supply floats with the load placed on them. Some electronic equipment such as digital cameras or security cameras are very sensitive to the input voltage and so require a Regulated/Switching adapter.  A regulated AC adapter guarantees that the output voltage will always be constant.

Do Not use an unregulated supply in place of a regulated one!

Ok to use a regulated (however generally pricer) in place of an unregulated.

3) Output plug size/ Output Polarity

These are measured in mm. I will try and give these measurements as accurately as I can. If the plug is not correct for your application. Radio shack or another supplier may have an adapter or the existing plug can be spliced to the replacement adapter if you be sure to check polarity before attaching to the equipment.

Output Polarity

Adapters with an AC out put this is not an issue however ANY and ALL DC adapters it must be observed or equipment damage most likely will occur.

 To determine the polarity of your Hp DC359A Adapter look for a symbol like this: I will have the same symbol on my auction pages for adapters.

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Laptop Parts - Laptop Battery, Laptop AC Adapter, Laptop Keyboard, LCD Panel.

I have 1 pipe coming out of the wall, but 2 shower heads. Is there an adapter that will switch between them?

I have one shower head on a hose, and one that is a "rainfall" type. I would like to be able to switch between them. There is only one water pipe coming out of the wall. Is there an adapter that will let me attach both shower heads with a valve to switch between them?

I know some of the hose type shower heads come with an valve/diverter that will do what you want. I would check with Home Depot or Lowes first. If they don't have it, a local plumbing supply house would be my next stop.

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