modified 5 years ago

Week 13 lab

00:34:46

Comparator

published 5 years ago

JSkaggs

5 years ago

1.check

JSkaggs

5 years ago

2.check

JSkaggs

5 years ago

3.the duty cycle changed because the difference between the non-inverting power supply and the inverting input. When the input voltage (Vin) became greater than the reference voltage (Vref) the output voltage (Vout) was amplified by the op amp to negative saturation (Vee)(-15) and to saturation (Vcc)(15) when Vin<Vref. This changed as the value of the potentiometer changed the value of Vref.

JSkaggs

5 years ago

4. check. The voltage output (amplified in the same way as in question #3) is now in phase with the input rather than inverted or 180 degrees out of phase (phase shifted).

JSkaggs

5 years ago

5. The output of this circuit could be used to control the positive voltage output cycle to a load (such as an LED) which would in turn adjust functionality of the load (acting as a dimming switch for the LED) from an on state to an off state (across the resistance of the potentiometer compared to the input voltage). This could be used as a variable output switch in PWM applications (motor speed, dimmer light switches, heating elements, etc.)

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