KIT Battery-powered acoustic amplifier with earphones

Attention, the product is a KIT and therefore you will be given the components to be soldered with an electronic soldering iron and everything you need to recreate the device as shown in the image. The KIT includes easy-to-understand illustrated instructions in Italian.

EXPERIENCE LEVEL NECESSARY medium-low

Assembly and testing by Mectronica STORE is also available by adding quantity 15 of the KIT assembly service which can be purchased separately and adding it to the cart together with the KIT to be assembled.

It strongly amplifies voices, sounds and noises picked up in the environment by a microphone capsule and makes them audible in a stereo earphone. Can also be used as a hearing aid.

This kit creates a microphone amplifier with an output suitable for stereo headphones. Using the kit, it will be possible to amplify any sound present in the environment, from the voice to a common noise of objects and/or music, in order to listen to it amplified on the headphone output. It will also be possible to adjust the amplification using the RP1 trimmer in order to obtain the desired volume.

The device does not have frequency cuts, so any sound will be amplified.

Soldering required for assembly. The kit comes complete with stereo earphones and assembly instructions in Italian.

How does it work

It may happen that you find yourself in conditions in which your hearing capabilities are not sufficient or in which you want to listen to noise coming from a certain distant area or a voice from afar; in such cases a device like the FK019 can be useful.

The circuit essentially consists of a microphone that receives the sound, which is in turn amplified via a transistor circuit, and then amplified again at the right levels to be subsequently listened to through common headphones connected to the 3" Audio out" jack socket. .5 mm. The volume is adjusted by acting on the RP1 trimmer.

The device must be powered by a CR2032 button cell battery. The power supply can then be supplied/interrupted at any time via the S1 switch, so that it can be used if necessary, thus increasing the battery life.

Technical specifications

·         Power supply: via CR2032 button battery (included in the package)