Rect & Batt Charge Part 1 Flashcards
The value of DC that is the mathematical sum of all the instantaneous values recorded at even intervals over a fixed period is called the
Average value
How may electrical degrees is one cycle?
360 degrees
What is the formula for calculating the period of a sine wave?
T = 1/f
What is another name for effective value?
RMS value
What is the exponent number for using the prefix expression of nano?
10 ^ -9
How do you test to see if an Ohmeter is working properly?
Touch the two leads together to verify operation
What are the two types of ammeters?
Clamp-on and series
The ammeter has an ideal resistance of how many ohms?
Zero
Oscilloscopes show what values on what axis?
Time is horizontal and voltage is the amplitude (vertical)
The electrons of one atom pairing up with those of neighbouring atoms in a semi conductor material is called
Covalent bonding
Insulators have how many valence electrons
Five to eight
Semiconductors have four valence electrons and Are referred to as what elements
Tetravalent
Once intrinsic material has been doped, the result is what sort of material?
Extrinsic
Doping silicon with pentavalent materials such as Arsenic, Phosphorus or Antimony makes what sort of semiconductor material?
N - Type
P Type semiconductor material is made by doping silicon with what materials?
Trivalent
Electrons are referred to as majority charge carriers in N-Type semiconductor material, whereas the majority charge carriers in P-Type material are :
Holes
What is a metal oxide varistor?
It filters out voltage spikes that can occur on the ac supply. eg: surge protectors
The lead connected to the P-Type Material is called..
an Anode
A diode only allows current to flow if the anode is positive with respect to the cathode with sufficient voltage. This diode is called a
Forward Bias Diode
The maximum amount of reverse voltage that can be applied to a diode is call what?
Reverse Bias Limit, Voltage Repetitive Reverse Maximum (Vrrm), peak inverse voltage (PIV) or peak reverse voltage (PRV)
Heat sinks are mounted vertically to make use of what effect
Chimney
Diodes in the 150A to 500A range are usually
Stud mounted with pigtail, press fit, known as medium current diodes
What is a freewheeling diode also known as?
Suppression or protection diode
Diodes that block current and provide battery isolation to prevent one load from discharging both batteries are called
Isolating or Blocking diodes
A photodiode allows a small current to flow when ______ ______ is applied
When “NO LIGHT” is applied , called Dark current
LEDs are usually made of
Gallium Arsenic Phosphate (GaAsP) or Gallium Phosphate (GaP)
Most common application of a diode is called a
Rectifier diode
The electrons of one atom pairing up with those of neighbouring atoms in a semi conductor material is called Covalent Bonding and creates what structure?
A semiconductor crystal lattice structure
How long is an alternation?
180 degrees or half of 1 cycle
Describe hole flow.
Positive to negative. Also known as Conventional Flow.
Describe Conventional Flow.
Positive to negative. Also known as Hole flow.
Describe Electron Flow.
Negative to Positive.
What is another name for the Barrier Region in a diode?
Depletion Region.
Hole Flow is from Negative to Positive. T or F?
False. Hole Flow is from Positive to Negative.
Hole Flow is from Positive to Negative. T or F?
True.
Electron Flow is from Negative to Positive. T or F?
True
How many Valence Electrons does Copper have?
1
