Before we jump into inverting & non-inverting amplifiers, let’s get ourselves cozy with feedback:
- Feedback
- Positive Feedback (not in syllabus)
- Negative Feedback
Category: Physics
PHY C21: Operational Amplifiers
In this chapter, we will take a look at one of the most widely used electronic devices: the operational amplifier (Op-Amp for short)!
- Use of operational amplifiers as comparators
- Properties of ideal op-amps
- Graphs of input vs output voltage
PHY C19/20: Electronic Sensors
2 chapters in 1 post? Let’s go!
- Electronic sensors
- LDR
- NTC Thermistors
- piezo-electric transducer
- metal-wire strain gauge
- Potential dividers
PHY C18: Uses of Capacitors
A short one this time! No maths, just facts.
- Uses of capacitors
PHY C18: Discharging Capacitors
- Discharge curves
- Charge
- Current
- Potential Difference
- Time constant
PHY C18: Energy Stored by Capacitors
- Energy Stored by Capacitors
- deducing W = 1/2 QV
PHY C18: Combined Capacitance
- Formulae for combined capacitance
- in series
- in parallel
- Problem-solving
PHY C18: Capacitance
We know that electric charges & electric potential are related:
- An imbalance of charges creates a difference in electric potential (AKA an electric field is induced!).
- If electric charges are free to move, they will move when there is a difference in electric potential.
But what if the charges are NOT free to move?
Now we will take a look at objects which hold an IMBALANCE of charge: capacitors.
- Definition of Capacitance
- Isolated conductors
- Parallel-plate capacitor
- C = Q/V
PHY C14: Obtaining Diagnostic Information using Ultrasound
Now let’s put it all together & examine:
- Principles behind the use of ultrasound to obtain diagnostic information about internal structures
PHY C14: Reflection & Absorption of Ultrasound
Now for some calculations…
- Specific Acoustic Impedance
- Intensity Reflection Coefficient
- Attenuation of Ultrasound
- Problem-solving
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