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).
- The Temperature Switch Kit detects the temperature of its surroundings using a thermistor.
- The kit acts as an automated on/off switch (temperature dependant).
- 1 x 47KΩ Potentiometer.
- 2 x BC337 NPN Transistors.
- 1 x Thermistor.
- 1 x 220Ω Resistor.
- 1 x Heat Activated Switch PCB
Possible applications include:
- Babies bath over temperature indicator.
- Automatic fan.
- PCB Length: 53mm.
- PCB Width: 25.5mm.
- This kit requires soldering.
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.
This kit is designed and manufactured in the UK by Kitronik.
A guide to understanding how a Potential Divider / Voltage Divider works. What is a Potential Divider / Voltage Divider? This is a simple circuit which takes advantage of the way voltages drop across resistors in series.
Learn how to make a heat activated fan/cooler in our easy to follow tutorial.
Learn how to make a babies bath over temperature indicator in our easy to follow tutorial.
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 byon Tuesday, 19 July 2016
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.htmlPosted byon Tuesday, 10 November 2015
Yes this kit would be fine to use for this purpose.Posted byon Friday, 13 February 2015
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 byon Monday, 24 November 2014
0voteA: 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 byon Monday, 6 October 2014
0voteA: 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 byon Wednesday, 1 October 2014
Excl. VAT: £2.29 Incl. VAT: £2.748
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