Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
Transcript of Op-Amps
Open-Loop Response For a positive input voltage ... Including Resistors Op-Amp
Closed-Loop Response Learning Goals a.Describe the function of a general purpose operational amplifier in accordance with industry practice. c.Analyse and design inverting, non-inverting and unity gain buffer op-amp circuits. b.External components are calculated and verified experimentally for various operational amplifier configurations. Real Amplifier infinite gain
infinite input impedance
zero output impedance
equal response to +/- voltage
equal response to all frequencies
instant response to input change
(slew rate) Assume Op-Amps are very close to ideal ...less than these goals +/- DC supply 15 V ground
(or other V ref ) measured signal +/- DC supply 15 V + input = + output
- input = - output Vout = +/- Vss Using no feedback Connections: Op-Amp
Open-Loop Response +/- DC supply 15 V ground measured signal +/- DC supply 15 V + input = - output
- input = + output Vout = +/- Vss Using no feedback Op-Amp
Closed-Loop Response virtual ground What happens to a sine wave input? becomes a square wave output +V on output ... +V on - input ... Vin+ = Vin- ... Vout -> 0 Vin- drops ... Vin+ > Vin- ... Vout increases initial response is Equilibrium Vout = Vin Op-Amp
Closed-Loop Response Including Resistors Resistor values divide the feedback Gain: Av = -R f R in Inverting Practice... Major difference: Vin to +
Non-Inverting Gain: Av = 1 + R 1 R 2 Practice... Op-Amps
other common designs differential (subtracting) adding integrating differentiating neagtive feedback Amplifies Current, not Voltage More listed here : http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/opampvar.html#c1 http://webpages.ursinus.edu/lriley/ref/circuits/node5.html Brent Phillips This Prezi may be used for non-commercial purposes.
Please acknowledge source.