Question | Answer |
Parallel voltage is ___. | Constant |
A good fuse typically = ______. | 0 Ohms |
Voltage across a working fuse = ____. | 0 Volts |
A blown fuse = _____. Current cannot flow across a blown fuse. | Infinity Ohms |
A dot is used in graphics and schematics to indicate ____ _____. An empty circle implies _____ _____. | A Electrical Connection, No Connection |
Normalling contacts are _____ _____, single throw switches used to _____ ____signal in special ways. | Single pole, route signal |
An insert is a Tip, Ring, Sleeve jack with a(n) _______ _________. | Unbalanced Signal |
Tip is _______. Ring is ________. Sleeve is _______. | Send, Return, Ground |
Acronyms definitions: PCB, TRS, DMM, PSU | Printed Circuit Board, Tip-Ring-Sleeve, Digital MultiMeter, Power Supply Unit |
Cold solder joint / how solve | Tinning, make sure you apply heat for long enough. |
diode leg name identification: schematic and actual component | AND, NAND, OR, NOR, EXOR, EXNOR, INVERTER/ 1: TRUE, 2: FALSE |
Resistance | Current Downstep (varies) |
Continuity | Solid connections |
Voltage | Unit of measure of measurement for current |
Diodes | Lets current flow in only 1 direction |
Function of an 'insert' | To manipulate signal in a closed circuit |
Jack cleaning burnisher | Used to clean the main contacts of a patch jack by removing a small film of metal from the surface |
Injector function | Allows the contacts to be cleaned efficiently by exposing their surfaces when plugged into a patch point |
Measuring voltage on an oscilloscope | V/ Division knob |
Op amp inputs and outputs | Input 2 signals, output 1 signal |
Oscillator | Creates audible waveforms at specified frequencies |
Oscilloscope | Displays Time (T) and Voltage (V). Visual voltage reader for people. Time is on left-right X AXIS. Volatge is displayed vertically Y AXIS. |
TRS contact definitions/function, wiring colors for balanced applications | Tip, Ring Sleeve; Tip:Hi(white), Ring: Low(black), Sleeve: Ground (green) |
TRS contact definitions/function, wiring colors for stereo applications | Tip + Sleeve: Left, Ring: right (short lug = tip = left ear, ring = right ear) |
Voltage regulators 78xx 79xx | 78xx is positive (+) , 79xx is negative (-) |
Relative dB | A change in output level relative to input level |
Absolute dB | Measurement of level referenced to a standard |
dBm | Measurement of power transfer, referenced to 1mW |
dBv | Measurement of voltage transfer across a 600 ohm load, 0.775 Vrms |
dBu | Measurement of voltage of voltage transfer, Independent of load impedance, 0.775 Vrms |
dBV | Measurement of voltage transfer, independent of load impedance, referenced to 1Vrms |
dBW | MEasurement of power transfer, referenced to 1W |
dBFS | Measurement of digital audio level, 0 dBFS is the absolute max. digital level |
Mic Level | Signal level typical of a mic output; -20 dBu nominal level, lower impedance than instrument level |
Instrument Level | Instrument level; -20 dBu nominal level, higher impedance than microphone level |
Consumer Line Level | Consumer audio equipment; -10dBV nominal level |
Pro Line Level | Pro gear; +4 dBu nominal level |
Unbalanced Interface | Audio interconnect utilizing one hot conductors of equal impedance between signal ground conductor |
Balanced Interface | Audio interconnect utilizing two signal conductors of equal impedance to ground |
Preamplifier | An audio circuit used to increase lo level voltages and adapt impedances between circuits |
Low Pass Filter | A voltage divider audio circuit w/ an output that is inversely proportional to frequency |
High Pass Filter | A voltage divider audio circuit w/ an output that is directly proportional to frequency |
Direct Box | An audio circuit that converts a high impedance unbalanced signal into a low impedance balanced signal. |
Reamp Box | An audio circuit that transforms a pro line level signal into a high impedance instrument level signal |
Isolated Splitter | An audio circuit used to minimize signal loss when feeding multiple inputs from a single source |
Humbucker | A type of pickup used to reject electromagnetic noise through the use of two oppositely wound coils |