ArticleslgStudy

science

Sensistor

Sensistor is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sensistor rather than just read about it. In short: Sensistor is a resistor whose resistance changes with temperature. The resistance increases exponentially with temperature, that is the temperature coefficient is positive (e.g. 0.7% per degree Celsius).

Sensistor — main illustration
Sensistor — illustration

Key takeaways

  • Sensistor belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Sensistor to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Sensistor from memory before moving on to harder problems.

Reference excerpt

Sensistor is a resistor whose resistance changes with temperature. The resistance increases exponentially with temperature, that is the temperature coefficient is positive (e.g. 0.7% per degree Celsius). Sensistors are used in electronic circuits for compensation of temperature influence or as sensors of temperature for other circuits. Sensistors are made by using very heavily doped semiconductors so that their operation is similar to PTC-type thermistors. However, very heavily doped semiconductor behaves more like a metal and the resistance change is more gradual than it is the case for other PTC thermistors.

See also thermistor

References

Illustrations

Sensistor: Example of electronic circuit with the sensistor Rs
Example of electronic circuit with the sensistor Rs

Worked examples

Example 1 — a first encounter with Sensistor

Start with the simplest possible case. Write down what Sensistor claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sensistor before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sensistor ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sensistor

In research
Sensistor appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Sensistor in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Sensistor is common in secondary-school and first-year university syllabi. It links to neighbouring topics Sensors, so understanding it makes those chapters shorter.
In everyday life
Look for Sensistor outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Sensistor in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Sensistor means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Sensistor out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sensistor in simple terms?

Sensistor is a resistor whose resistance changes with temperature. The resistance increases exponentially with temperature, that is the temperature coefficient is positive (e.g. 0.7% per degree Celsius).

Why does Sensistor matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sensistor?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sensistor.

Tags

  • Sensors

Keep exploring