keywords and sensor conditioning circuits.

keywords and sensor conditioning circuits.

1. Wheatstone bridge.

   • is an electronic circuit used to measure unknown resistors, balancing the bridge arms.
     • it is formed by
       • four resistors forming a closed circuit.

2. voltage divider

   • is a configuration of an electrical circuit which distributes the voltage between one or more resistors or impedences connected in series.
     • equation
       • vout=R2/R1 + R2 . Vin

3. potentiometer

   • a device conformed by two resistors inseries, which have values that can be modified by the user.
     • imagen.

4. thermistor

   • a device used to measure temperature.
     • its operation is
       • from the variation of the resistance of a semi conductor caused by changes in ambient temperature.
         • types of the hemistor.
           • NTC= -(negative temperature coefficient)
             • is a non lineal sensor whose resistance decreases with the crease in temperature. In this case the temperature coefficientis high and negative.
           • PTC=( positive temperature coefficient)
             • is a non nlinear sensor whose resistance in creases with the increase in temperature

5. wheatstone bridge.

   • is an electronic circuit used to measure unknown resistors balanding the bridge arms.
     • it is formed by
       • four resistors forming a closed circuit.

6. voltage divider

   • is a configuration of an electrical circuit which distributes the voltage between or impedances connected in series.
     • Equation
       • vout=R2/R1 + R2 . Vin

7. potentiomer

   • is a device conformed by two resistors inseries, which have values that can be modified by the user.

8. thermistor.

   • is a device used to measure temperature
     • its operations
       • from the variation of the resistance of a semiconductor by changes in ambient temperature.
         • types of the hemister
           • NTC= (negative temperature coefficient)
             • is a non lineal sensor whose resistance decreases with the increase in temperature. in this case the temperature coefficients high and negative.
           • PTC=(positive temperature coefficient)
             • is a non lineal sensor whose the resistance increase with the increase in temperature.