Electret microphone M-0905

Purpose and scope

The electret microphone M-0905, hereinafter “microphone”, converts the acoustic signal into the electrical one and adjustably amplifies the electric signal.

The microphone can be used as a part of any devices where relatively high impact resistance is required in combination with high sensitivity and sound quality (as the part of voice announcement systems on the transport, transport loud-speaking devices, etc.).

Contents of delivery

 1. Microphone   1 pc
 2. Microphone holde   1 pc
 3. Operation manual  1 pc

Warranty

Warranty period – 12 months.

Average lifetime – not less than 5 years.

Basic technical specifications

No.

Name

Unit of measure

Designation

Value

1

End-to-end frequency range

Hz

Fl…Fh

not narrower than 100 …12000

2

Rated (nominal) output signal level, adjustable (supply voltage 5 V, load resistance 1 kΩ, 1 kHz)

V

Uoutput nom

0…0,5

3

Max. output signal level (supply voltage 5 V, load resistance 1 kΩ, 1 kHz)

V

Uoutput max

not less than 2

4

Min. consumption current

mA

Imin

not more than 5

5

Max. consumption current (supply voltage 5 V, load resistance 1 kΩ)

mA

Imax

not more than 6

6

Rated (nominal) supply voltage

V

Unom

+5 V

7

Supply voltage range

V

Umin – Umax

+(4…9) V

8

Operating temperature range

 

°C

-40…+80

9

Dimensions

mm

 

not more than Ø 50 × 170

10

Weight

kg

m

not more than 0,2

Principle of operation

Structurally the M-0905 (photo 1) is made in the dynamic microphone housing inside which a PCB with a microphone is mounted.

The microphone is connected to other devices by the twisted telephone cable.

The acoustic signal is converted by the microphone into the electric one and then is given to the pre-amplifier.

The microphone is switched on by the button situated on its housing.

Pinout scheme of the microphone M-0905 connector (cable connector X2, beak position down, counting from left to right, pic. 1)

No.

Name of the signal

1

 Ground 

2

Supply voltage +5 V

3

Output

4

 -

Pic. 1. Connection scheme for the microphone M-0905