Breckland Scientific 2023 Catalogue

Sound & StandingWaves

Sound

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1 PSU BASE LOUDSPEAKER AMPLIFIER - NEW! Part of the MAX Series range, this PSU Base Loudspeaker Amplifier unit features a 100W D-Class amplfier accessed via either 4mm sockets, a 3.5mm jack socket or Bluetooth connectivity to drive the 8 ohm speaker. The built-in speaker can be turned off allowing the amplifier to drive an external speaker if required. Cat No. Description Price Per SWA-260-100 PSU Base Speaker Amplifier 99.90 ea. 2 POWER AMPLIFIER WITH SPEAKER An audio amplifier which can be used for a wide range of experiments and demonstrations. The unit is powered by any laboratory power supply (9-12V d.c). Signal input is via 4mm sockets on the front panel, which includes a volume control. Impedance is 500k ohms (approx.); as such the unit can be driven directly from a crystal microphone, signal generator, radio headphone output etc. The unit is internally protected against incorrect input voltage polarity. Signal output is from the internal loudspeaker or via 4mm output sockets, which allows amplified signals to be displayed on an oscilloscope or used to drive a separate speaker; a two-position switch is provided to select internal or external output. Cat No. Description Price Per SWA-240-100 Power Amplifier with Speaker 59.28 ea. 3 AMPLIFIER- IPC An audio amplifier which can be used for a wide range of experiments and demonstrations. The unit is powered by any laboratory power supply (9-12V d.c). Signal input is via 4mm sockets on the front panel, which includes a volume control. Impedance is 500k ohms (approx.); as such the unit can be driven directly from a crystal microphone, signal generator, radio headphone output etc. The unit is internally protected against incorrect input voltage polarity. Signal output is from the internal loudspeaker or via 4mm output sockets, which allows amplified signals to be displayed on an oscilloscope or used to drive a separate speaker; a two- position switch is provided to select internal or external output. Cat No. Description Price Per SWA-230-100 Amplifier 65.54 ea.

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PSU Based Loudspeaker Amplifier

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Power Amplifier With Speaker

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4 MOUNTED CRYSTAL MICROPHONE A mounted dynamic coil microphone, giving 20-50mV output from a human voice. Cat No. Description

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Price Per

EMC-105-147 Crystal Microphone

17.03 ea.

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5 MICROPHONE A multi-purpose electret condenser type microphone, mounted in a plastic case with two 4mm output sockets, an on/off switch and power indicator. Can be used for various applications and experiments requiring an audio input, including voice and music waveforms, by connecting it directly to an oscilloscope and setting the voltage to 5mV/div and timebase to 2.5ms/div. The microphone has an output impedance of 2.2Kohm and comes supplied with a PP3 type 9V battery. Dimensions: 68 x 120 x 36mm. Sensitivity: -42dbFrequency. Response: 20Hz to 20kHzOutput Impedance: 2.2kohm. Cat No. Description Price Per SWA-220-100 Microphone 51.28 ea.

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Amplifier - IPC

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Microphone Unit

Crystal Microphone

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