Electrical stuff I guessed

Transistor?

Transistor?

a semiconductor device with three connections, capable of amplification in addition to rectification.

A transistor has three pins-

Collector, base, emitter

Two types of bipolar transistors-

NPN and PNP

What does a transistor do?

Use as a switch, for amplification, and rectification

Inductor -

A passive two terminal electrical component that stores energy in a magnetic field when electric current flow through

How is inductor measured (units)-

Henry (It's the measurement of inductance)

Inductor and capacitors Both stored energy, but different

capacitor store physically . Capacitors are plates

Inductor stores magnetically Inductors are coil wrapped

Capacitor

-is a passive electronic component that stores energy in the form of an electrostatic field

How do you safely handle a capacitor?-

make sure you do not touch the leads, handle by the body, preferably use leather gloves and pliers

How is capacitance measured?

Farads

The voltage capability is listed on the capacitor. Why?

Safety, too much voltage can cause catastrophic failure

Diodes-

a semiconductor device that essentially acts as a one-way switch for current

What is the voltage requirement for electricity to flow in a forward bias installed diode?

.7 volts allows electrons to cross the depletion zone.

What does it mean if you get a voltage reading when hooking the red probe to the striped end of the diode and hooking the black probe to the other end of the diode?

It is no longer working

Resistors

-a two terminal electronic component that resists the flow of electric current

What is a resistors job?

Limit or regulate flow of current

Where are resistors used in a circuit?

Anywhere you need you need to regulate flow of current.

AC Electricity

alternating current

Why is AC the world standard in long distance transmission electricity ?

Cost effective (Transformers are relatively cheap), high voltage, low resistance

Who is credited with the advent of AC?

Nikola Tesla

Who wanted to discredit AC as being too dangerous?

Thomas Edison

WHat is the standard frequency that AC alternates at?

50hz-60hz

What is standard household voltage in the US?

110-120 Volts