Microphone

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(added materials and manufacturing methods)
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{| class="wikitable" border="1"  
{| class="wikitable" border="1"  
|-  
|-  
-
!Part Number !!Photo !!Part name !!weight (g) !!notes !!Material !!Manufacturing Method
+
!Part Number !!Photo !!Part name !!Mass (g) !!Notes !!Material !!Manufacturing Method
|-
|-
!1
!1
-
| ||Ring ||2 ||attaches to mic end of boom shaft
+
| ||Ring ||2 ||attaches to mic end of boom shaft ||Steel ||Machining
|-
|-
!2
!2
-
| ||Boom shaft ||493 ||
+
| ||Boom shaft ||493 || ||''||Extrusion
|-
|-
!3
!3
-
| ||Counterwieght || ||
+
| ||Counterwieght || ||''||Casting
|-
|-
!4
!4
-
| ||Mic holder ||10 ||
+
| ||Mic holder ||10 ||''||Casting and machining||
|-
|-
!5
!5
-
| ||Bolt A ||3 ||holds mic holder to #7
+
| ||Bolt A ||3 ||holds mic holder to #7 ||''||Machining
|-
|-
!6
!6
-
| ||Bolt B ||2 ||#6 goes into #5
+
| ||Bolt B ||2 ||#6 goes into #5||''||''
|-
|-
!7
!7
-
| ||(part that screws onto boom) ||12 ||
+
| ||(part that screws onto boom) ||12 ||??||???
|-
|-
!8
!8
-
| ||(part that screws onto mic stand) ||71 ||
+
| ||(part that screws onto mic stand) ||71 ||??||??
|-
|-
!9
!9
-
| ||Rubber pad (2X) ||8 ||goes inside #8 to hold #11 in place
+
| ||Rubber pad (2X) ||8 ||goes inside #8 to hold #11 in place||Rubber||Molding
|-
|-
!10
!10
-
| ||Bolt C ||16 ||holds #8, #9, and #10 together
+
| ||Bolt C ||16 ||holds #8, #9, and #10 together||Steel||Machining
|-
|-
!11
!11
| ||Boom holder ||65 ||has a long hole in which the boom is inserted.  Attaches to mic stand  
| ||Boom holder ||65 ||has a long hole in which the boom is inserted.  Attaches to mic stand  
-
via #8
+
via #8||''||Casting and machining
|-
|-
!12
!12
-
| ||Washer || ||#10 goes throught this washer
+
| ||Washer || ||#10 goes throught this washer||Steel||Stamping
|-
|-
!13
!13
-
| ||Ring ||2 ||Identical to #1
+
| ||Ring ||2 ||Identical to #1|| ||
|-
|-
!14
!14
-
| ||Handle || ||Has a threaded hole in which the end of #10 is inserted
+
| ||Handle || ||Has a threaded hole in which the end of #10 is inserted||Steel||Casting and machining
|-
|-
!15
!15
| ||Thumbscrew ||3 ||Holds boom in place.  Goeas through hole in #11.  Has plastic nub so as  
| ||Thumbscrew ||3 ||Holds boom in place.  Goeas through hole in #11.  Has plastic nub so as  
-
not to scratch the boom
+
not to scratch the boom||Two kinds of plastic (head and nub) and steel (screw)||Molding (plastic) and machining (steel)
|-
|-
!16
!16
-
| ||Wire clip ||2 ||Attaches to mic stand, used to hold wire in place
+
| ||Wire clip ||2 ||Attaches to mic stand, used to hold wire in place||Plastic ||Molding
|}
|}
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{| class="wikitable" border="1"  
{| class="wikitable" border="1"  
|-  
|-  
-
! Part Number !!Photo !!Part name !!Weight (g) !!Notes
+
! Part Number !!Photo !!Part name !!Masss(g) !!Notes !!Material !!Manufacturing Method
|-  
|-  
! M1  
! M1  
-
| cell 1,1 || Switch slider ||<1|| cell 1,2  
+
| cell 1,1 || Switch slider ||<1|| cell 1,2 || Plastic || Molding
|-  
|-  
! M2  
! M2  
-
| cell 2,1 || Sticker A ||<1 ||Goes on M1  
+
| cell 2,1 || Sticker A ||<1 ||Goes on M1 ||Plastic ||Stamped out of a thin sheet
|-
|-
! M3  
! M3  
-
| cell 2,1 || Screw A (2X) ||<1 ||Holds switch electronics to the microphone body
+
| cell 2,1 || Screw A (2X) ||<1 ||Holds switch electronics to the microphone body ||Steel ||Machining
|-
|-
! M4
! M4
-
| cell 2,1 || Screw B ||<1 ||Atttaches gground pin to the back of the microphone body  
+
| cell 2,1 || Screw B ||<1 ||Atttaches gground pin to the back of the microphone body ||''||Machining
|-
|-
! M5
! M5
-
| cell 2,1 || Body ||187 ||Large, machined
+
| cell 2,1 || Body ||187 ||Large, machined ||Metal ||Casting and machining, sandblasted finish
|-
|-
! M6
! M6
-
| cell 2,1 || Rubber disc ||2 ||Holds three pins in place
+
| cell 2,1 || Rubber disc ||2 ||Holds three pins in place ||Rubber ||Molding
|-
|-
! M7
! M7
-
| cell 2,1 || Pin ||1 ||Transmits signal from the microphone to the wire
+
| cell 2,1 || Pin ||1 ||Transmits signal from the microphone to the wire ||Metal || ?????
|-
|-
! M8
! M8
-
| cell 2,1 || Switch electronics ||3 ||Use physical user input from switch to affect electrical circuit
+
| cell 2,1 || Switch electronics ||3 ||Use physical user input from switch to affect electrical circuit ||Plastic housing, metal wire || Molding (housing), extrusion (wire)
|-
|-
! M9
! M9
-
| cell 2,1 || Foam cover ||<1 ||Covers the magnet and diaphragm
+
| cell 2,1 || Foam cover ||<1 ||Covers the magnet and diaphragm ||Polymer foam ||????
|-
|-
! M10  
! M10  
-
| cell 2,1 || Plastic cover ||2 ||Protects diaphragm and magnet
+
| cell 2,1 || Plastic cover ||2 ||Protects diaphragm and magnet ||Plastic ||Molding
|-
|-
! M11
! M11
-
| cell 2,1 || Chip ||<1 ||Takes signal from coil (M13) and transmits it to the the pins. Is glued to a slot on M16
+
| cell 2,1 || Chip ||<1 ||Takes signal from coil (M13) and transmits it to the the pins. Is glued to a slot on M16 || Silicon chip, copper conductors ||Chemical etching
|-
|-
! M12
! M12
-
| cell 2,1 ||Diaphragm ||<1 ||Made from a thin piece of plastic with a spiral stamped into it to give it better elastic properties
+
| cell 2,1 ||Diaphragm ||<1 ||Made from a thin piece of plastic with a spiral stamped into it to give it better elastic properties ||Plastic ||Stamping
|-
|-
! M13
! M13
-
| cell 2,1 || Coil ||<1 ||Thin insulated copper wire
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| cell 2,1 || Coil ||<1 ||Thin insulated copper wire || Copper ||Extrusion
|-
|-
! M14
! M14
-
| cell 2,1 || Magnet ||5 ||Attached to diaphragm
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| cell 2,1 || Magnet ||5 ||Attached to diaphragm ||Magnetic metal ||Casting
|-
|-
! M15
! M15
-
| cell 2,1 || Sticker B ||<1 ||Covers cavity in the housing, below where the magnet sits  
+
| cell 2,1 || Sticker B ||<1 ||Covers cavity in the housing, below where the magnet sits ||Plastic ||Stamping
|-
|-
! M16
! M16
-
| cell 2,1 || Housing ||10 ||Holds parts M11-M15,  the parts that actually convert sound into an electrical signal
+
| cell 2,1 || Housing ||10 ||Holds parts M11-M15,  the parts that actually convert sound into an electrical signal ||Plastic ||Molding
|-
|-
! M17
! M17
-
| cell 2,1 || Wind screen ||<1 ||Made of a hollow foam ball.  Inserted into the metal screen.  Used to soften sounds of users' voices
+
| cell 2,1 || Wind screen ||<1 ||Made of a hollow foam ball.  Inserted into the metal screen.  Used to soften sounds of users' voices ||Polymer foam ||????
|-
|-
! M18
! M18
-
| cell 2,1 || Metal screen ||49 ||Made of a wire mesh attached to metal rings
+
| cell 2,1 || Metal screen ||49 ||Made of a wire mesh attached to metal rings ||Steel ||Extrusion, weaving, ??(Don't know how rings are attached)

Revision as of 13:15, 17 September 2009

header 1 header 2 header 3
Row header 1 cell 1,1 cell 1,2
Row header 2 cell 2,1 cell 2,2



Part Number Photo Part name Mass (g) Notes Material Manufacturing Method
1 Ring 2 attaches to mic end of boom shaft Steel Machining
2 Boom shaft 493 Extrusion
3 Counterwieght Casting
4 Mic holder 10 Casting and machining
5 Bolt A 3 holds mic holder to #7 Machining
6 Bolt B 2 #6 goes into #5
7 (part that screws onto boom) 12 ?????
8 (part that screws onto mic stand) 71 ????
9 Rubber pad (2X) 8 goes inside #8 to hold #11 in placeRubberMolding
10 Bolt C 16 holds #8, #9, and #10 togetherSteelMachining
11 Boom holder 65 has a long hole in which the boom is inserted. Attaches to mic stand

via #8||||Casting and machining

12 Washer #10 goes throught this washerSteelStamping
13 Ring 2 Identical to #1
14 Handle Has a threaded hole in which the end of #10 is insertedSteelCasting and machining
15 Thumbscrew 3 Holds boom in place. Goeas through hole in #11. Has plastic nub so as

not to scratch the boom||Two kinds of plastic (head and nub) and steel (screw)||Molding (plastic) and machining (steel)

16 Wire clip 2 Attaches to mic stand, used to hold wire in placePlastic Molding


Part Number Photo Part name Masss(g) Notes Material Manufacturing Method
M1 cell 1,1 Switch slider <1 cell 1,2 Plastic Molding
M2 cell 2,1 Sticker A <1 Goes on M1 Plastic Stamped out of a thin sheet
M3 cell 2,1 Screw A (2X) <1 Holds switch electronics to the microphone body Steel Machining
M4 cell 2,1 Screw B <1 Atttaches gground pin to the back of the microphone body Machining
M5 cell 2,1 Body 187 Large, machined Metal Casting and machining, sandblasted finish
M6 cell 2,1 Rubber disc 2 Holds three pins in place Rubber Molding
M7 cell 2,1 Pin 1 Transmits signal from the microphone to the wire Metal  ?????
M8 cell 2,1 Switch electronics 3 Use physical user input from switch to affect electrical circuit Plastic housing, metal wire Molding (housing), extrusion (wire)
M9 cell 2,1 Foam cover <1 Covers the magnet and diaphragm Polymer foam ????
M10 cell 2,1 Plastic cover 2 Protects diaphragm and magnet Plastic Molding
M11 cell 2,1 Chip <1 Takes signal from coil (M13) and transmits it to the the pins. Is glued to a slot on M16 Silicon chip, copper conductors Chemical etching
M12 cell 2,1 Diaphragm <1 Made from a thin piece of plastic with a spiral stamped into it to give it better elastic properties Plastic Stamping
M13 cell 2,1 Coil <1 Thin insulated copper wire Copper Extrusion
M14 cell 2,1 Magnet 5 Attached to diaphragm Magnetic metal Casting
M15 cell 2,1 Sticker B <1 Covers cavity in the housing, below where the magnet sits Plastic Stamping
M16 cell 2,1 Housing 10 Holds parts M11-M15, the parts that actually convert sound into an electrical signal Plastic Molding
M17 cell 2,1 Wind screen <1 Made of a hollow foam ball. Inserted into the metal screen. Used to soften sounds of users' voices Polymer foam ????
M18 cell 2,1 Metal screen 49 Made of a wire mesh attached to metal rings Steel Extrusion, weaving, ??(Don't know how rings are attached)




header 1 header 2 header 3
Row header 1 cell 1,1 cell 1,2
Row header 2 cell 2,1 cell 2,2


Failure Modes and Effects Analysis

Considering ways in which a product could potentially fail is a crucial part of the design process. All products must be designed such that they are both safe and reliable for use and any potential dangers must be addressed in the design phase.

Assembly/Parts Failure Mode Consequence of Failure S Causes of Failure O Prevention D RPN Recommendations Responsibility
On/Off Switch Soldering Becomes Loose Microphone will not turn on 7 Bad soldering 2 N/A 2 28 Check soldering before assembly Controls engineer
Diaphragm Torn Diaphragm Inoperable 7 Misuse or Outside particles gets inside microphone 1 Foam Cover 2 14 None N/A
Retrieved from "http://wiki.ece.cmu.edu/ddl/index.php/Microphone"
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