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Where can I order cheap dual sided PCB?

2018-12-10

I guess, the circuit board factory of Pearl River Delta in China should be your best choice.

What is GPS PCBA?

2018-12-10

GPS?PCBA: GPS solution / GPS module / GPS Navigator / OEM & ODM

Can we have a thermoelectric effect without having a PN junction?

2018-12-07

Nope.The thermoelectric effect is the direct conversion of temperature differences to electric voltage and vice versa via a thermocouple.

Are the peak input and output voltages of the half wave diode rectifier equal?

2018-12-07

No. They are not equal. A rectifier is an electrical device which converts alternating current (AC) to direct current (DC), which flows in only one direction. The process is known as rectification.(Wiki)

Is nodal analysis applicable to both DC and AC supply?

2018-12-07

Yes,nodal analysis is applicable to both DC and AC.

Is there any problem if I use regular single-strand wire for solar connection?

2018-12-06

Not really. We can only say that the same wire diameter, the conductivity of multi-strand wire is larger than that of a single-strand wire, because the current passes through the surface of the wire and the surface area of the multi-strand wire is bigger.

What is the diameter of a wire? How is this determined?

2018-12-06

If you know the square of wire, you can calculate the radius of wire by using that the formula for calculating the circular area, then diameter = 2 * radius ; Likewise, if you know the diameter of the wire, you can also calculate the square of wire

How do I make a simple ON/OFF sensor with LED?

2018-12-06

Well, you may need to prepare these stuff, that is: A LAS ( light activated switch ) A LED Two Photosensitive resistors Batteries

Would a house electric circuit show any voltage when its circuit breaker is off?

2018-12-05

Nope. The house electric circuit wouldn’t show any voltage anymore.

What type of transformer is called a step-down transformer?

2018-12-05

Step-down transformer: The higher voltage at the input end is converted to the ideal voltage with relatively low output, realizing the voltage reduction.

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