This stereo audio amplifier kit can be used with any personal stereo equipment, including MP3 players. It uses a TDA2822Maudio amplifier IC which can output 1W per channel. The kit is supplied with two speakers anda pre-made jack plug.
This kit includes:
- 1 x TDA2822M audio amplifier IC
- 1 x8 pin IC holder
- 2 x10Kohm resistors
- 2 x4.7ohm resistors
- 2 x100Kohm resistors
- 2 x100nF capacitors, ceramic disc
- 2 x470uF capacitors, electrolytic
- 2 x 100uF capacitors, electrolytic
- 1 x 10uF capacitor, electrolytic
- 1 x3.5mm stereo jack cable
- 1 xPP3 clip lead
- 2 x speakers (8ohm, 66mm) and connecting wire
- 1 x stereo amplifier PCB
It has a PP3 battery clip and can run off any voltage from 2 to 15 volts.
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 theman idealgift. Click here to view the retail version
|PCB LxW (mm):||58 x 35.|
|PCB Component Count:||15.|
|Voltage Nominal (V):||9.|
|Voltage Range (V):||2-15.|
|Standby Current (mA):||7.5.|
|Current max at Nominal Voltage (mA):||180.|
Output power at 9V is 1W per speaker. See thedatasheetfor more details.
Note: Schools will receive a more detailed set of teaching notes on a CDROM.
MP3 Stereo Amplifier Kit by A Level Product Design students at Barry Comprehensive School.
Stereo Amplifiers by AS Level students at Richmond upon Thames College.
A range of Stereo Amplifier designs by year 10 students at Meadows Community School, Chesterfield.
Stereo Amplifiers designed by 6th form students as part of their A Level Product Design course at Audenshaw School.
A video of us comparing our Amplifier Kits taken from our Ask Kitronik Live event 2012.
Hi, Can this kit be connected up with an iphone/pod dock (instead of the 3.5mm jack) and different speakers? Thanks
Posted byon Friday, 11 April 2014We have tried this kit with an iPod and whilst it does work there is no volume control on the iPod or on the amplifier kit so you get the music played at full volume which is inevitable distorted. I suspect that an iPhone will be the same as the iPod, but haven't tried this. It would be possible to use two potentiometers to create a volume (and balance control). The speakers could be changed however the IC on the board will only drive 1W into each speaker so you wouldn't necessarily hear the benefit of using better speakers.
Hi, I have recieved a leaflet from you with this product on the front, with it is also a picture of the boombox. Is this incorperated in the price or are they brought seperately? Thank You
Posted byon Friday, 11 April 2014The boombox is available separately. There is a link in the related items on the left of this page. You can also see some pictures of how schools have boxed the mono amplifier using other materials by clicking on the camera icon. We often find that if schools are short on time and want to focus on the electronics then they will use the boombox which can easily be personalised. If more time is available then students will be able to make their own enclosure, in this case it is often useful to have some boomboxes to hand as there will often be the odd student that hasn't managed to finish their case and still will get to take away a finished product.
Hi, Can this kit be connected up with an iphone/pod dock (instead of the 3.5mm jack) and different speakers?
Posted byon Friday, 11 April 2014We have tried this kit with an iPod and whilst it does work there is no volume control on the iPod or on the amplifier kit so you get the music played at full volume which is inevitable distorted. I suspect that an iPhone will be the same (unless it has a 3.5mm jack) as the iPod, but haven't tried this. It would be possible to use two potentiometers to create a volume (and balance control). The speakers could be changed however the IC on the board will only drive 1W into each speaker so you wouldn't necessarily hear the benefit of using better speakers.
Whats the best way to add a volume control to this kit, in addition the the volume control on the MP3 player itself
Posted byon Friday, 25 January 2013We do a deluxe version of the stereo amplifier which includes a volume control, power LED, on/ off switch and optional DC jack plug, for product details see: http://www.kitronik.co.uk/products/project-kits/ic-based-kits/deluxe-stereo-audio-amplifier-kit/
can i add leds to this board
Posted byon Wednesday, 12 December 2012Yes you can add an LED, there is an explanation of how to do this on the following page: http://www.kitronik.co.uk/resources/tutorials/how-to-add-a-power-switch-and-led-to-your-project-kit/
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