I am currently working on a circuit, a sensor to detect a very high temperature, any suggestion as to a good design for a prototype? Thanx

 

Hello,

How high will be the temperature?
You can use a thermocouple or a radiation thermometer.
The following page of the EDUCYPEDIA has some links with info on temperature sensors:
http://educypedia.karadimov.info/electronics/thermocouple.htm

Bertus

 

The temperature should be around 150 deg for the sensor to detect problem it is for an engine performance.

 

A car Engine temperature sensor to detect when the temperature of the car is more than 150 deg. HELP?????

 

1. I assume you refer to 150 deg. Celsius. It is correct ?
2. You're referring to an electric motor or combustion engine?

If the answer to the first question is yes, then I recommend you turn to "high temperature inductive sensor". Some theory in this regard:
http://cdn.intechopen.com/pdfs/9949...ic_measurement_systems_for_remote_sensing.pdf
http://www.is-com.ru/files/photoelectric_detectors_xs.pdf

A selection guide:
http://www.koyoele.co.jp/english/support/pdf/sensors_prox.pdf

If you think to develop a prototype, then you can fill theoretical knowledge in the direction we expounded above, or pay someone to do it. Price for sensor prototype high temperature is very high and exceeds 100 000 USD. So it takes time and money.

 

would it possible for me to use a Thermocouple or a Thermistor sensor to determine an engine temperature?? i need HELP ASAP

 

One place to start would be to read the datasheet for the LM35. To read its output (temperature), you need only a voltmeter which you can buy for under $5. It's good only to 150°C max, but perhaps that's enough.

The short answer to your question is yes. I suggest you go to Mouser and start shopping and reading datasheets.