This audio amplifier kit can be used with any personal stereo equipment, including MP3 players. It uses a TBA820M audio amplifier IC which can output 1.6W of power. The kit is supplied with a PP3 battery clip and can run off any voltage from 3 to 16 volts. Also supplied is a pre-built jack cable.
This kit includes:
- 1 x TBA820M audio amplifier IC
- 1 x 8 pin IC holder
- 1 x 1ohm resistor
- 1 x 100ohm resistor
- 1 x 10Kohm resistor
- 2 x 100uF capacitor, electrolytic
- 1 x 220uF capacitor, electrolytic
- 1 x 470pF capacitor, ceramic disc
- 2 x 100nF capacitor, ceramic disc
- 1 x PP3 clip lead
- 1 x 3.5 stereo jack cable
- 1 x speaker (8ohm, 66mm)
- 1 x mono amplifier PCB
It works nicely off a 9V battery (not supplied) or if you want to run it of the mains why not try our 12V wall power unit.
This product is also available in retail packaging making them an ideal gift. Click here to view the retail version
|PCB LxW (mm):||45.5 x 35.5.|
|PCB Component Count:||10.|
|Voltage Nominal (V):||4.5.|
|Voltage Range (V):||3 - 9.|
|Standby Current (mA):||4.|
|Current max at Nominal Voltage (mA):||60.|
Note: Schools will receive a more detailed set of teaching notes on a CDROM.
MP3 Mono Amplifier Kit by year 10 Product Design students at Barry Comprehensive School.
MP3 Mono Amplifiers by year 9 students at Meole Brace School.
Amplifier cases designed by students at Archbishop Sentamu Academy.
Amplifier designs by Mr Peachey's students at St Mary's Catholic High School Astley, Manchester.
Mono Amplifier Kit with light by a student at Rickmansworth School.
Mono Amplifier Training Aid by Eggar's School.
'Secret Amplifiers' by year 8 students at Sir Robert Pattinson Academy.
Mono Amplifier Designs by year 9 students at Humphry Davy School.
MP3 Amplifiers designed by year 9 students at Ibstock Community College.
A range of Mono Amplifier designs by students at Meadows Community School, Chesterfield.
Mono Amplifiers designed by 6th form students as part of their A Level Product Design course at Audenshaw School.
Amplifier case designs by students at Litcham High School.
Plywood 'Bass Box' designed by students at Hardenhuish High.
Laser Cut MDF MP3 Amplifier designed by students at Meole Brace School.
Technoboy Amplifier designed by students at Beverley High School.
MP3 Mono Amplifier Project Kit demo and explanation video.
A video of us comparing our Amplifier Kits taken from our Ask Kitronik Live event 2012.
I have completed a PCB but it is not plasying anything other than a ticking noise.I have checked for any faults and it all seems as it should work. What exactly will it work with? ipod, phones (other than iphone) or standard MP3 player? Just put a big order in for my class and need them to know what it will work with. Cheers
Posted byon Friday, 21 June 2013Hi James, the mono amp should work with anything that has a 3.5mm socket. I can confirm it works with an iphone just fine if you put it in the headphones socket. I would recommend taking a photo of the top and the bottom of the board and emailing them to email@example.com and I will take a look at what is causing the problem.
I had this product all wired up and it worked for 2 weeks but then, whenever i use it i get a buzzing noise from it and the sound quality becomes very poor. Could you please advise me on what to do about this. Thanks.
Posted byon Tuesday, 18 June 2013Have you left the battery connected while the kit is not in use? As the amplifier will take a bit of power to amplify the silence and once flat the board wont work.
Hi, Is it possible to add a volume control to this kit for my project? I know this is available on the stereo kit but I only want to use one speaker. Is there a way of using the stereo kit to produce a mono output? Thanks, Keith
Posted byon Tuesday, 14 May 2013A 10K Trimmer Pot (variable resistor) placed just after the audio input will act as a volume control. When set to minimum resistance the volume will be full and as the resistance is increased the volume will go down.
Hi. We have been soldering the MP3 amplifier kit and a few of the pupils have had trouble with the volume of the speaker. Do you know the reasoning behind this? maybe something to do with one of the capacitors? Thank you
Posted byon Thursday, 29 November 2012There are a number of reasons why the kit might be quiet. Within the teaching material there is a fault finding flow chart which lists these reasons. If we assume the batteries are good and the volume on the music source is good then, the other options are: IC1 for a short on pins 1&2, 2&3 or 6&7 R1 & R2 are in the right place For a dry joint on C4, R2 or IC1 pin 2.
Hello,Whell my school ordered some of these and i have one But my teacher did say we can change the speaker What is the maximum wattage i can use with these amplifier. Thanks
Posted byon Wednesday, 28 November 2012It depends upon the voltage you run the amplifier at as to what the output power will be. That said if you work on needing a speaker that can handle a peak power of at least 1W then you will be fine. You can of course go for a higher wattage speaker and whilst the amplifier won?t be able to drive the speaker at its full power the higher power speakers do tend to be of a better quality. That said if you try and drive a speaker that is too higher power the amplifier won?t have enough power to move the coil at all. So my recommendation would be a speaker between 1W and 20W. The speaker should have a resistance of 8 ohms. We do a higher power full range speaker which sounds really clear with the kit, see: http://www.kitronik.co.uk/products/components/audio/speakers/20w-10cm-full-range-speaker/
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