50
::
WAVES, VIBRATIONS AND SOUND
Microphone
The microphone is well-suited for the measurement of
sound frequencies, the speed of sound and the recording
of sound for Fourier transformation.
The sensitive microphone is very small and therefore very
suitable for measurements of sound interference.
It is supplied with a one meter cable with a 3-pole DIN
connector which can be connected directly to the elec -
tronic counter type 2002.50 or student timer 2006.60.
The microphone can be connected to an oscilloscope or
other measuring instrument via type 2515.60 power
supply. The frequency range is 20-20.000 Hz.
Supplied with 10 mm diameter support rod.
Dimensions: Length 105 mm, greatest diameter 30 mm.
2485.10 Microphone without stand
2485.10
Microphone model “carbon box”
The apparatus is for demonstrating the operation of the
carbon microphone.
Carbon microphone
The model consists of 2 ea. 45 mm diameter metal plates
placed on either side of a layer of carbon grains. The
The device is used along with a power supply to produ-
metal plates are each connected to a telephone jack.
ce an electrical signal by means of sound waves.
The system is mounted on a piece of clear acrylic so that
The microphone is mounted on a 10 mm diameter sup-
all components are visible.
port rod and provided with a cable with banana jacks.
Maximum loading: 50 mA, 150 ohm. Dimensions: Length
4680.00 Microphone model “carbon box”
155 mm, diameter 67 mm. Mass: 175 g
2490.00 Carbon microphone without stand
Loudspeaker
4680.00
Used with function generator 2500.50 or 2501.50 to
generate soundwaves from a point source of sound.
Mounted on a 10 mm dia. rod, and supplied with cable,
including 4 mm plugs. Power: 1W over 25 ohm.
2505.00
Dimensions: Lgt. 165 mm, dia. 67 mm.
Mass: 0,2 kg.
2505.00 Loudspeaker without stand
Loudspeaker
2510.50
The speaker can be used with the type 2500.50 and
2501.50 signal generators for listening to acoustic sig-
nals. The signals can be measured using microphone
type no. 2485.10.
The system contains three loudspeaker units.
2490.00 Frequency range: 60 - 20.000 Hz
Loading: 50 W with 4 ohm impedance
Dimensions: B x H x D: 215 x 116 x 110 mm.
Weight: 2 kg.
2510.50 Loudspeaker without stand
®
Science Equipment for Education Physics
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