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2113_large_temperature_switch_kit

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Heat Activated Switch

2
Easy Build
Exclusive to Kitronik
Teaching Notes
Key Stage 3
The Temperature Switch Kit detects the temperature of its surroundings using a thermistor. The kit acts as an automated on/off switch (temperature dependable).

Availability: In Stock.

Code1+ 5+ 50+
2113£2.00
(£2.40 incl VAT)
£1.45
(£1.74 incl VAT)
£1.15
(£1.38 incl VAT)
OR

This temperature activated project kit is also available as a light activated project kit. The output of this board can be used to control other electronic circuits, turning them on automatically when it goes hot or cold.

The board has space for an LED with current limit resistor (both available separately) which will light when the output turns on.

The Darlington pair transistor configuration allows an output current of up to half an amp to be controlled. Operating voltage 3V to 10V (lower voltages allow for better adjustment of the switching point).

Features:

  • The Temperature Switch Kit detects the temperature of its surroundings using a thermistor.
  • The kit acts as an automated on/off switch (temperature dependant).

Contents:

Possible applications include:

  • Babies bath over temperature indicator.
  • Automatic fan.

Dimensions:

  • PCB Length: 53mm.
  • PCB Width: 25.5mm.

Requires:

Resources:

Note:

  • This kit requires soldering.

Free samples:

Teachers can order a sample of this kit (one per school) here. You will need to select the kit from a list of all the sample kits; the stock code for this kit is 2113.
Note: this service is only offered to schools for evaluation purposes only.

Buy British:

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


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Questions:

Posted by Scott, Tuesday, 19 July 2016 on product Heat Activated Switch
  • 0
    vote
    A:

    Hi Scott, Unfortunately I believe your order for this item has already been dispatched, and as such no changed can be made to this. With regards to the cost of the LED and R3 it would depended on which Led you wanted to us to which resistor is needed. If you find an LED you would want to use then if you use the LED calculator section on the product page for the LED you will be able to calculate the resistor value you would need.

    Posted by Michael Lockhart on Tuesday, 19 July 2016
Posted by kentarou, Tuesday, 10 November 2015 on product Heat Activated Switch
  • 0
    vote
    A:

    The thermistor that is used in the heat activated switch kit is the 4.7K ohm Thermistor, https://www.kitronik.co.uk/c3006-4k7-47k-thermistor.html

    Posted by Michael Lockhart on Tuesday, 10 November 2015
Posted by Ian Soady, Friday, 13 February 2015 on product Heat Activated Switch
  • 0
    vote
    A:

    Yes this kit would be fine to use for this purpose.

    Posted by Michael Lockhart on Friday, 13 February 2015
Posted by Kaare Dorman, Monday, 24 November 2014 on product Heat Activated Switch
  • 0
    vote
    A:

    The temperature range can be varied with the on board potentiometer. The thermistor can be connected on leads. The temperature range varies a bit from kit to kit as the resistors are only accurate to 5%, however it definitely covers -10C to 40C.

    Posted by Aaron Sturman on Monday, 24 November 2014
Posted by Rob Edwards, Monday, 6 October 2014 on product Heat Activated Switch
  • 0
    vote
    A: The thermistor is rated to 125 degrees, so wouldn't even be up to the job of measuring the air temperature in the BBQ let alone what the temperature of the burner was. I would have thought that you would be best using the same technology as they do in gas boilers for detecting if the pilot is on .i.e. a thermocouple.
    Posted by Geoff Hampson on Monday, 6 October 2014
Posted by Chris Dalton, Wednesday, 1 October 2014 on product Heat Activated Switch
  • 0
    vote
    A: Hi, Unfortunately we only have the manufacturing data in the form of X-Y coordinates which isn't going to be very useful for you. A circuit diagram is available in the "Essential Information" .pdf though. From that you should be able to design your own PCB.
    Posted by Aaron Sturman on Wednesday, 1 October 2014
Posted by Danni, on product Heat Activated Switch
  • 0
    vote
    A: Hi Danni, The reason R4 is include in the kit is to protect the transistor in case the potentiometer is set to zero. The potential difference is taken from the value between R1 and R2, as such R4 isn’t used for the calculation of this.
    Posted by Michael Lockhart on Friday, 19 May 2017

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