VAMISOUND Schoeps electret страница 14 Скачать руководство пользователя | Manualshive

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BILL OF MATERIAL

Part

Value

Tol.

Min.V
olt.

Dimmensions

link 1

link 2

notes

Resistors

R1

1G

10 %

6.5x2.5mm

R2

2K

1 %

6.3x2.4mm

matched to R3

R3

2K

1 %

matched to R2

R4

75K

1 %

matched to R5

R5

75K

1 %

matched to R4

R6

6K8

1 %

P1

1M

20 %

trimmer

Part

Value

Tol.

Min.V
olt.

Dimmensions

link

type

notes

Capacitors

C1

22nF

50V

film

forms LPF

C2

1uF

50V

film

C3

1uF

50V

film

C4

47uF

50V

electrolytic

C5

220uF

16V

electrolytic

C6

2.2nF

50V

ceramic

filter on XLR

C7

2.2nF

50V

ceramic

filter on XLR

Part

Value

Tol.

Min.V
olt.

Dimmensions

link

type

notes

Diodes

D1

6.2V

zener

D2

6.2V

zener

D3

6.2V

zener

Part

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Содержание Schoeps electret

Страница 1: ...Schoeps electret BUILDING INSTRUCTIONS...

Страница 2: ...friend first of all thank you for your support and choice of the VAMISOUND product We wish you a happy DIY and the joy of a new microphone in your arsenal Jan and Milan SCHOEPS ELECTRET BUILDING INST...

Страница 3: ...asy project The circuit is made up of only a few components However it should be borne in mind that certain manual skills will be required or the successful completion of the mic construction Good sol...

Страница 4: ...circuit it can use a electret capsule The circuit is frequency flat with no internal equalizer Start by fitting the smallest components which are the zener diodes D1 D2 and D3 Keep in mind that these...

Страница 5: ...Continue by soldering resistors as in the picture R2 and R3 form a matched pair the same for R4 and R5 Install the teflon pin and the remaining R1 that feeds into it as if in air...

Страница 6: ...ootprint of the FET transistor there are small marks D S and G drain source and gate Make sure that the selected FET transistor uses the same footprints If necessary adjust according to the markings o...

Страница 7: ...for very bright capsules You can experiment with values of round 22nF if needed Continue with the installation of two transistors T2 and T3 Before that match the HFE parameter on these transistors Mos...

Страница 8: ...Two electrolytic capacitors remain to be installed Clean the back of the board thoroughly with a brush and isopropyl alcohol to keep it perfectly clean and free of soldering debris...

Страница 9: ...rs Solder the first one between pin 1 of the XLR connector insert and pin 2 and the second one between pin 1 and pin 3 of the XLR connector insert Then output two 47uH inductors from pin 2 and pin 3 o...

Страница 10: ......

Страница 11: ...Now continue the build by screwing the XLR insert electret capsule without internal FET transistor its stand and board to the microphone chassis Solder the center terminal of the capsule to the teflon...

Страница 12: ...o the preamp and activate phantom power As for the P1 trimmer set it so that you measure about 4 5V on the drain leg of the FET transistor and 6 1V and the D5 R2 point Please check the original schema...

Страница 13: ...pcb Cable from capsule backplate to BCKP pad on the mic pcb 2 Its always great idea to check phase of DIY microphone against commercial microphone ADDITIONAL INFO Take you time when soldering the XLR...

Страница 14: ...0 tayda link trimmer Part Value Tol Min V olt Dimmensions link type notes Capacitors C1 22nF 50V mouser link film forms LPF C2 1uF 50V mouser link film C3 1uF 50V mouser link film C4 47uF 50V mouser l...

Страница 15: ...C264 PCB footprint match BC264 pin out T2 BC559C mouser link alternatives 2N5087 BC560 HFE matched to T3 T3 BC559C mouser link alternatives 2N5087 BC560 HFE matched to T2 Other Capsule electret capsul...

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