# Shared Flashcard Set

## Details

Audiotronics
Exam 2
64
Engineering
Not Applicable
04/10/2006

Term
 Do we use magnetized screwdrivers inside computers?
Definition
 No
Term
 What do we use to clean the connectors on PCI and AGP expansion cards?
Definition
 Isopropyl Alchohol
Term
 What must be done prior to making any connections in the studio?
Definition
 Turning the volume knobs all the way down
Term
 Define Open.
Definition
 No current flow, infinite Ohms
Term
 Define Closed.
Definition
 Has current flow by design
Term
 Define Short.
Definition
 0 Ohms, current takes the path of least resistance
Term
 Define Series.
Definition
 Circuit path does not split
Term
 Define Parallel.
Definition
 Circuit path splits
Term
 Parrallel voltage is _________.
Definition
 Constant
Term
 What is the voltage accross a short? Why
Definition
 0 Volts. There is no difference in electrical potential since there is no 0V reference
Term
 Define P.
Definition
 Power measured in Watts. It is the Work being done
Term
 Define I.
Definition
 Current in Amps, It is the flow of electrons
Term
 Define E.
Definition
 Electromotive Force in Volts. It is the Electrical Pressure
Term
 Define R.
Definition
 Resistance in Ohms. It is the blockage that inhibits electron flow
Term
 Define Z.
Definition
 Impedence in Ohms. It is a Resistance at certain frequencies
Term
 What is the formula to find Current.
Definition
 I=P/E
Term
 How many Volts is an American Wall Outlet?
Definition
 115
Term
 What does an active component require to turn on?
Definition
 DC Power
Term
 What do Bridge Rectifiers do?
Definition
 They change AC into DC by directing all AC half cycles to travel in the same direction
Term
 What do we call the leads on a Bipolar Transistor?
Definition
 Collector, Emitter, and Base.
Term
 What do we call the leads on a FET Transistor?
Definition
 Source, Gate and Drain
Term
 What type of charge is found in an inverting op amp Input/Output?
Definition
 Negative
Term
 What type of charge is found in a non inverting op amp Input/Output?
Definition
 Positive
Term
 What are Op amps used for in audio?
Definition
 Amplifying, Inverting, Summing Amps, Active EQ's, Oscillators, Changing Impedence, Balancing, Comparitors, VCA's, Compressors.
Term
 What is Gain?
Definition
 A unitless number that acts as a multiplier
Term
 What is a truth table?
Definition
 Table used to show how a logic circuit's output responds to various combinations of the inputs
Term
 What are the two main digital transistor families?
Definition
 Bipolar and MOSFET
Term
 What is TTL
Definition
 Transistor to Transistor logic. It refers to the Bipolar family
Term
 What is the operating level for CMOS?
Definition
 3Vdc to 18Vdc
Term
 CMOS chips are ______ sensitive.
Definition
 Static
Term
 What are the two main purposes of a Chip Socket?
Definition
 Quick and easy chip replacement, protection from overheating
Term
 What is a single sided circuit board?
Definition
 Metal runs on only one side
Term
 What is a double-sided circuit board?
Definition
 Metal runs on both sides of the board
Term
 What is a stuffed circuit board?
Definition
 Parts pre-soldered to the board
Term
 What is an unstuffed circuit board?
Definition
 Parts are not pre-soldered to the board
Term
 Flux residue can be removed with flux solvent or __________.
Definition
 Isopropyl Alchohol
Term
 What are the three most important features of a service manual?>
Definition
 Assembly Drawing, Schematic Drawing, and Parts List
Term
 What do we generally use reference manuals for?
Definition
 To order replacement parts
Term
Definition
 Zenith, Azimuth, Wrap, Rack, and Height
Term
Definition
 Using a Dry Erase marker on the head play the tape and check the wear pattern
Term
Definition
 Using a Dry Erase marker on the head play the tape and check the wear pattern
Term
Definition
 Record a 1K tone at 0 VU, flip the tape over and play it back to ensure it is still 1K and 0 VU
Term
Definition
 The manufacturer.
Term
 When do we adjust the azimuth?
Definition
 In Electrical Cal
Term
 How do we test Brake Tension?
Definition
 With a Spring Scale ans string and the machine stopped
Term
 How do we measure pinch roller pressure?
Definition
 With a Spring scale. Play a 1K tone, and pull on the pinch roller with the spring scale. Record the tension at the point where the pitch begins to drop
Term
 How do we measure tape tension?
Definition
 While tape is playing, measure tension with a tentolometer
Term
 How do we test tape speed?
Definition
 With an MRL and Frequency meter in play mode
Term
 How many dB is 200 nWb/m?
Definition
 +1
Term
 How many dB is 250 nWb/m?
Definition
 +3
Term
 How many dB is 320 nWb/m?
Definition
 +5
Term
 How many dB is 355 nWb/m?
Definition
 +6
Term
 How many dB is 370 nWb/m?
Definition
 +6
Term
 How many dB is 500 nWb/m?
Definition
 +9
Term
 How many dB is 520 nWb/m?
Definition
 +9
Term
 What is the Play Cal formula?
Definition
 VU=MRL-Op Level
Term
 What are the two main methods for biasing?
Definition
 10k Overbias, and 1K peak method
Term
 Which biasing method yeilds the best results?
Definition
 10k Overbias
Term
 Which biasing method is universal?
Definition
 1k peak method
Term
 In Europe, 0dB is ________ nWb/m.
Definition
 200
Term
 What is the difference between a standard diode and a zener diode?
Definition
 Zener Diodes have a higher turn on voltage
Term
 What do the letters TP on a schematic drawing generally mean?
Definition
 Test Point
Term
 What do dotted lines on a schematic represent?
Definition