What is analogue control?
Control based on continuous variable signals, such as voltage, current, temperature
What is an OP-AMP?
An electronic device that takes a small voltage difference at its input and produces a larger output voltage.
What electronic component changes its resistance depending on the temperature around it?
Thermistor
TURD (Temperature up, resistance down)
What type of control used by Comparator and Difference op-amp?
Comparator - Two-State control
Difference: Proportional
What is two-state control?
Either on/off
Jumps between extremes - no fine tuning
Less efficient in heaters/ motors with more wear
Useful for control systems, alarms etc.
What is proportional control?
Voltage starts off further from desired voltage, and graduallt gets closer and closer to desired value before eventually settling on it.
Useful for heaters, motors, fans etc.
What analogue component changes resistance based on light?
LDR
LURD(Light up, resistance down)
