What is Amp: Definition and 377 Discussions

AMP is a financial services company in Australia and New Zealand providing superannuation and investment products, financial advice and banking products including home loans and savings accounts. Its headquarters is in Sydney, Australia.
The Australian Mutual Provident Society was formed in 1849 as a non-profit life insurance company and mutual society. In 1998, it was demutualised into an Australian public company, AMP Limited, and listed on the Australian and New Zealand stock exchanges.
AMP has one of Australia's largest shareholder registers, with most shareholders living in Australia and New Zealand. This is because when the society demutualised, all policy holders received shares in the new company.
In 2003, the company demerged its UK operations, creating the Henderson Group.
On 20 April 2018 Craig Meller resigned as CEO after it was revealed in the Royal Commission into Misconduct in the Banking, Superannuation and Financial Services Industry that AMP charged clients for financial advice which was not provided, and misled the Australian Securities & Investments Commission on numerous occasions. More than $1 billion in market value was stripped from AMP shares as news of the company's failings were revealed before the Royal Commission. In the wake of revelations at the banking royal commission and his resignation from AMP, Meller resigned as a financial services adviser to the Turnbull government.AMP board appointed Franceso De Ferrari as Chief Executive Officer of AMP Limited on 1 December 2018.
On 25 March 2021, it was announced that De Ferrari would resign.

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  1. A

    Op Amp LM358 LED flasher oscillator

    I have tried many times testing some Op Amp LED flashing circuits on a breadboard from the internet. So far, none of them works. The photo above is one of my attempt using a Ti IC chip LM358. I have double checked my wiring and swap the 100k with 10k and 56k resistors. what is the problem...
  2. D

    How do you choose which quad amp to use for a microphone amp

    I'm building a microphone amplifier for a bot that will respond to frequency commands between 1kHz and 3kHz. I have an ADMP401 mic but need to choose an op amp. Someone in class told me the LM348 quad amp is best but not why and I need to know how to make that decision.
  3. Marcin H

    Engineering Op Amp Circuit Weird Characteristics

    Homework Statement Homework Equations V=IR KCL/KVLThe Attempt at a Solution I have a similair problem to this one in my notes and I know how to solve this circuit, but I am confused on some parts of it. First, at V1 why can we say the voltage there is 0V? Is it because it is connected to...
  4. T

    Cooling Calculations: 5 Amp vs. 30 Amp Units

    Homework Statement If a 5 amp unit can cool 4 cups of water from 75 to 50 degrees fahrenheit in one hour, what temperature could a 30 amp unit cool 128 cups of water in the same amount of time? Is there enough information here to get an idea about what the 30 amp unit would do? If so where...
  5. C

    Can I put a PC on top of a marshall half stack guitar amp?

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  6. Planobilly

    Building a vacuum tube amp from scratch

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  7. Planobilly

    Need ideas for a LED Pilot light for a tube amp

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  8. slick_willy

    Enclosed floating aquatic 12v car-audio amp system

    Hey guys so I have had this idea for an electronics project for a long time, and it basically goes like this. It's a floating speaker box for floating on the river when we are rafting. Design considerations are that it would have to be unsinkable (as much as possible), also loud and with a...
  9. Roy Fokker

    How can I adjust the roll off of my preamp design for better frequency response?

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  10. Weightofananvil

    Small Amp Project (Tube/power stage info needed)

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  11. Marcin H

    Audio Amp with negative feedback

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  12. B

    Is My Op Amp Burned Out? Voltage Check

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  13. Planobilly

    How do I modify this bias circuit Mesa Nomad 45 tube amp

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  14. Planobilly

    Need Some Guidance For Testing Process On Vacuum Tube Amp

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  15. kostoglotov

    Need some insight into an inverting op amp example

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  16. S

    Help with OP AMP Circuit Question

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  17. S

    Solving an Ideal Op Amp Circuit Problem

    Homework Statement [/B] Hello, I have attached the problem below. I am trying to find the value for v1 - v2 and iA. The given values are V, RA, and R for the other resistors. There are no numbers. Homework Equations It is given that the op amp is ideal, therefore v- = v+, and i- = i+ = 0 for...
  18. V

    Audio amp for sonoluminescense

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  19. G

    Output Impedance of an Inverting Op Amp

    Homework Statement Hello, I just came across a design problem based on an inverting op amp. The requirement output values are -25G and not greater than 1kOhm output impedance. With inputs 1V p-t-p and 75Ohms input impedance Choosing values for the gain seem fairly easy, but how these values...
  20. S

    Input/Output Voltage Class C RF Amp

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  21. A

    Op amp transfer function determination ()

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  22. naiasetvolo

    Energy in a Capacitor: Explained

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  23. H

    Preparing Op Amp Lab: Tips & Guidelines

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  24. S

    Figuring this circuit's amp before resistor one

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  25. G

    Can You Derive the Gain Equation for a Non-Ideal Op Amp?

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  26. P

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  27. J

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  28. A

    Engineering Inverting Op Amp Circuit: Calculating Output Voltage with Feedback Loop

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  29. Newtons Apple

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  30. thankz

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  31. booboo1

    The output of Op-Amp[LM324] has error as non-inverting Amp

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  32. L

    Asking for Op Amp recommendations

    Hi all, I realize I'm asking for the world here, but google hasn't been very helpful. I've found a few candidates with some/most of what I need, but wondering if there is some holy grail op amp out there that everyone is using. I'm growing tired of making work-arounds for the LM324's I have...
  33. xconwing

    How to clasify if it's an inverting/non-inverting op amp

    Hello, Like the title said, how can you tell if it's an inverting or non-inverting op amp just by looking the the schematic like this one. textbook said this is an inverting op amp. I thought whichever input node (+/-) the signal go through dictate the classification of an op amp if it's...
  34. A

    Op amp and 3-db frequency problem

    Homework Statement An inverting amplifier with the DC gain of -9 (V/V) is built with an op amp having its DC gain of 105 and corner frequency of 30 rad/s. ▪ Determine the 3-dB frequency of the inverting amplifier. ▪ Sketch the magnitude Bode plot of the voltage transfer function of the...
  35. E

    How Do You Design a BJT Amplifier with Specific -3dB Points at 10Hz and 10kHz?

    I would like to know how to design an amplifier similar to the attached circuit with set -3db points, the lower on the order of 10Hz, and the higher on the order of 10kHz. I have designed amplifiers to work with a set gain, but have not dealt with frequency response before. I designed an amp...
  36. G

    Solving a Complex Homework Question with Inverting Amp Equation

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  37. S

    How hot might this 3 amp transformer get?

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  38. O

    Are op amps compatible with motors?

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  39. E

    Are AC Amp Gauges Compatible with DC Breakers? A Surprising Discovery

    I was walking around at work today to find an AC amp Gauge on a DC breaker (1000KW, 250 VDC), Which made me scratch my head if there is any difference between the two gauges for this application? Any idea? Thanks.
  40. K

    Question based on folllowing diagram (TDA audio amp):

    guys for the critical frequency for low pass is it the following: 1/2pi* 2.2*10^(-6)*100k?
  41. ME_student

    Engineering Calculating Op Amp Circuit Parameters

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  42. J

    Engineering Differential OP AMP Circuit Question

    Homework Statement Find Vin/Vout Homework Equations Vout = Rf/R1(Vb-Va) ? The Attempt at a Solution I think the answer is the first one. Answer choices: Vin/Vout = -2, Rin = 100 Vin/Vout = -2, Rin = 200 Vin/Vout = -2.5, Rin = 100 Vin/Vout = -2.5, Rin = 200 Vin/Vout = -3, Rin = 100...
  43. A

    Solving Op amp with nodal equations

    Homework Statement Find V0 and i0 of the circuit. Homework Equations KCL The Attempt at a Solution I tried multiple times and never got the right answer. -------------- Hello, I am having trouble solving a problem. I will link a picture of the problem with answers, but it just seems I can't...
  44. M

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  45. L

    Op amp with zener in feedback loop

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  46. T

    Op amp integrator. design calculation not matching experiment.

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  47. V

    Engineering Troubleshooting an Op Amp Circuit: Iterative Problem-Solving Methods

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  48. J

    Current noise density from Ibias on op amp datasheet

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  49. A

    My op amp doesn't work well under AC input

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  50. A

    Power requirements in amp hours for project

    Hi guys, I have been working on an automation of a cart. The cart wheels are producing a current of 14 Amps for 5 minutes for every cycle(1.16 Amp hour stored in a battery). while the cart is running there are 2 actuators operating. One actuator uses 10 amps for 5 seconds (only 0.01388...
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