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Audiotronics 2
Audio Electronics
| 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 |
Created by:
la.maricha
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