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FM Radio Kit V2.0

12
Exclusive to Kitronik
Teaching Notes
Key Stage 4
The FM Radio has controls for tuning and to adjust the volume. Includes an audio amplifier and output is via a 66mm speaker. Powered by batteries or mains.

Availability: In Stock.

Code1+ 5+ 50+
2157£12.00
(£14.40 incl VAT)
£10.50
(£12.60 incl VAT)
£9.50
(£11.40 incl VAT)
OR

The FM radio kit uses industrial surface mount ICs (the Si4820 and the NCP2890). The FM radio kit is supplied with the ICs mounted on the board. You just have to solder the remaining resistors,capacitors and other components to finish the kit.

The radio has controls for tuning and to adjust the volume. The circuit includes an audio amplifier and output is via a 66mm diameter speaker that is supplied with the kit.

The board can be powered from a 2.5V to 5.5V supply and works nicely off a 5V wall supply or 3x AA batteries (not supplied).

The Si4820 IC is one of the latest generation of radio receiver ICs that offer fantastic reception quality and ease of tuning, and the NCP2890 IC can output 1W of power.

Features:

  • FM Radio kit.
  • Audio amplifier built-in.

Contents:

Dimensions:

  • PCB Length: 88mm.
  • PCB Width: 46mm.

Requires:

Resources:

Buy British:

 This kit is designed and manufactured in the UK by Kitronik.

Physical characteristics:

  • PCB Length: 88mm.
  • PCB Width: 46mm.
  • PCB Component Count: 36.

Electrical characteristics:

  • Voltage Nominal: 5V.
  • Voltage Range: 2.5V - 5.5V.
  • Voltage Absolute Max: 6V.
  • Typical Standby Current: 20mA.
  • Current Maximum at Nominal Voltage: 250mA.
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Questions:

Posted by Maisie Kenny, Thursday, 17 November 2016 on product FM Radio Kit V2.0

Question:

Would the circuit that is supplied with this kit be able to support output to 2 speakers instead of one?

Answers:

  • Posted by Michael Lockhart on Thursday, 17 November 2016

    Hi Maisie, Yes it is possible to add a second speaker to the circuit. The kit is supplied with an 8 Ohm speaker, and is best suited for an impedance of 8 Ohm’s. As such you best option is to either have 2x 16 Ohm speakers and put them in parallel this would give a total impedance of 8 Ohms, or have 2x 4 Ohm speakers in series you would have a total impedance of 8 Ohms.

Posted by Marcus0444, Wednesday, 6 April 2016 on product FM Radio Kit V2.0

Question:

do you know what the tune 1, tune2 and the band on the chip is for i am not rely familiar with the electronic.

Answers:

  • Posted by Michael Lockhart on Wednesday, 6 April 2016

    Tune 1, Tune 2 and band are used to select the frequency of the radio signals that can be received. There are details on the difference frequency’s that can be received and how to obtain this on page 2 of the following document, http://www.silabs.com/Support%20Documents/TechnicalDocs/AN555.pdf We have set the kit up to receive signals in band 2. 

Posted by circuit, Thursday, 3 March 2016 on product FM Radio Kit V2.0

Question:

was is the diagram of this circuit?

Answers:

Posted by Headphone, Thursday, 3 March 2016 on product FM Radio Kit V2.0

Question:

can i put on the circuit a jack to plug in my headphone

Answers:

  • Posted by Michael Lockhart on Thursday, 3 March 2016

    No you wouldn’t be able to put a jack plug on the radio kit. If you wanted to have the option of either an audio input cable or an FM input then you would need to connect these up to the high powered amp kit.

Posted by Marc-Anthony Marquis, Friday, 26 February 2016 on product FM Radio Kit V2.0

Question:

Is the circuit given with the product is compatible with the said product?

Answers:

  • Posted by Michael Lockhart on Friday, 26 February 2016

    Do you mean are the components compactable with the PCB? All the components will fit onto the PCB as detailed in the built instruction.

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