Semiconductor Diodes Voltage

CAA; Physical Science B Unit 9: Electricity pleasse help thank you?

1. Information sent as patterns and codes in the controlled flow of electrons through a circuit is a(an)
(1 point)
electronic signal.

digital signal.

analog signal.

integrated signal.

2. Which of the following is made from a crystalline solid that conducts a current only under certain circumstances?
(1 point)
vacuum tube

cathode-ray tube

analog devise

semiconductor

3. A thin slice of silicon that contains many solid-state components is a(an)
(1 point)
transistor.

integrated circuit.

diode.

cathode-ray tube.

4. What solid-state component in a mobile phone maintains proper voltage levels in the circuits?
(1 point)
transistors

capacitors

diodes

microchips

Completion
Complete each sentence or statement.
5. A complete path through which charge can flow is an electric ____________________.
(1 point)

it is
A
D
B
C
Circuit

100% I promise

1.

Information sent as patterns and codes in the controlled flow of electrons through a circuit is a(an)
(1 point)

* Correct answer (1 pt)

electronic signal.
* Unselected answer (0 pts)

digital signal.
* Unselected answer (0 pts)

analog signal.
* Unselected answer (0 pts)

integrated signal.

1 /1 point
2.

Which of the following is made from a crystalline solid that conducts a current only under certain circumstances?
(1 point)

* Unselected answer (0 pts)

vacuum tube
* Unselected answer (0 pts)

cathode-ray tube
* Unselected answer (0 pts)

analog devise
* Correct answer (1 pt)

semiconductor

1 /1 point
3.

A thin slice of silicon that contains many solid-state components is a(an)
(1 point)

* Unselected answer (0 pts)

transistor.
* Correct answer (1 pt)

integrated circuit.
* Unselected answer (0 pts)

diode.
* Unselected answer (0 pts)

cathode-ray tube.

1 /1 point
4.

What solid-state component in a mobile phone maintains proper voltage levels in the circuits?
(1 point)

* Unselected answer (0 pts)

transistors
* Unselected answer (0 pts)

capacitors
* Correct answer (1 pt)

diodes
* Unselected answer (0 pts)

microchips

1 /1 point
Completion
Complete each sentence or statement.

5.

A complete path through which charge can flow is an electric ____________________.
(1 point)
Circuit

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Principles of Solar Cells, Leds and Diodes (Paperback) $148.45 The book will cover the two most important applications of semiconductor diodes – solar cells and LEDs - together with quantitative coverage of the physics of the PN junction at the senior undergraduate level. It will include: Review of semiconductor physicsIntroduction to PN diodesThe solar cellPhysics of efficient conversion of sunlight into electrical energy  Semiconductor solar cell materials and device physicsAdvanced solar cell materials and devicesThe light emitting diodePhysics of efficient conversion of electrical energy into lightSemiconductor light emitting diode materials  and device physicsAdvanced light emitting diode materials and devices

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ESD Protection Demo

High input voltage power supply ...?

I need to design a dc-dc converter that can take an input voltage of 600Vdc and output 12Vdc. The current output is less than 100mA, but I still would like decent efficiency

Perhaps one of the "off-line" type designs used in computer/laptop supplies. Ive seen some rectify 240Vac and drop it to about 18V putting out 50W or so.

Any help finding semiconductors (controller ICs, switching transistors, diodes, etc.) rated up to 600V would be greatly appreciated.

Thanks in advance!
I'm willing to do this in two stages if needed. First convert 600Vdc to any 'reasonable' voltage; then regulate to 12Vdc.

You won't find much rated at 600 volts (you probably need 800 volts rating for a margin). What circuit do you plan on using? I doubt it needs more than a few parts rated for the high voltage. Probably diodes, capacitor and a power transistor. Diodes are no problem, 1N4007, for example. Caps, you may have to put 2 in series.

You can find MOSFETS (IRF830) that are good to 500 volts, and there may be some that are a bit higher. Otherwise you will need to put two in series.

This is a lot of work for 1 watt of power.

.