A shaft coupling is a mechanical component that connects the drive shaft and driven shaft of a motor, etc., in order to transmit power. Shaft couplings introduce mechanical flexibility, providing tolerance for shaft misalignment.

A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between two shafts while allowing for angular misalignment, parallel offset and even axial motion, of one shaft relative to the other.

However there are two main types of couplings (Fig 1) which are (i) rigid couplings, and (ii) flexible couplings. Rigid couplings are used for shafts having no misalignment.

Flange is a projecting rim or edge for fastening, stiffening or positioning. Flange coupling is a type of coupling between rotating shafts that consists of flanges (or half couplings) one of which is fixed at the end of each shaft, the two flanges being bolted together with a ring of bolts to complete the drive.

From Wikipedia, the free encyclopedia. In software engineering, coupling is the degree of interdependence between software modules; a measure of how closely connected two routines or modules are; the strength of the relationships between modules.

In electronics, direct coupling or DC coupling (also called conductive coupling) is the transfer of electrical energy by means of physical contact via a conductive medium, in contrast to inductive coupling and capacitive coupling. Conductive coupling passes the full spectrum of frequencies including direct current.

To connect analogue circuits together there are three basic methods, Direct Coupling, Capacitive Coupling and transformer coupling. All have different properties and can be used in any linear or non-linear circuit. With direct coupling, or DC coupling, two components are connected directly to each other.

DC coupling allows you to see all signals from 0 Hz up to the max bandwidth of your scope. AC coupling filters out DC components. When you enable AC coupling on an oscilloscope channel, you’re switching in a high-pass filter on the channel’s input signal path. This filters out all the DC components.

Offset null voltage definition Input Offset Voltage: Input offset voltage is defined as the voltage that must be applied between the two input terminals of an op amp to null or bring the output voltage to zero. The offset null effectively applies this voltage to ensure that the offset is removed from the output.

DC offset is an imbalance that sometimes occurs in A/D converters (see WFTD archive “A/D Converter“). When working with audio it is desirable to have only the audio program material passed through the signal path. Almost by definition audio, being a periodic waveform, is an AC (Alternating Current) signal.

IC 741 Op Amp (Operational Amplifier) It was first manufactured by Fairchild semiconductors in the year 1963. The number 741 indicates that this operational amplifier IC has 7 functional pins, 4 pins capable of taking input and 1 output pin.

To compensate for an offset voltage by injecting a current you can apply an adjustable voltage from a potentiometer via a high-value resistor to an appropriate circuit node. To adjust a “ground” voltage that a resistor connects to, you can connect it to a potentiometer which is able to vary either side of ground.

Offset refers to how your car’s or truck’s wheels and tires are mounted and sit in the wheel wells. Most wheels on front-wheel drive cars and newer rear-drive vehicles have positive offset. Negative offset is when the hub mounting surface is behind the wheel centerline.

Offset voltage (Vos) is defined as the voltage that must be applied to the input to cause the output to be 0.

Measure the DC offset. Count the number of vertical divisions between the zero line on the oscilloscope and the centerof the oscillatory signal. Multiply the number of vertical divisions by the volts/division setting in order to obtain the DC offset.

In audio recording, a DC offset is an undesirable characteristic. It occurs in the capturing of sound, before it reaches the recorder, and is normally caused by defective or low-quality equipment. It results in an offset of the center of the recording waveform that can cause two main problems.

Removing DC Offset

1. In the Audio Editor, open the audio file that you want to check for DC offset and that you want to fix.
2. Select the Process tab.
3. In the Level section, click Remove DC Offset. A dialog opens, stating the amount of DC offset in the audio file.
4. Click OK to remove the DC offset.

The RMS value is the square root of the mean (average) value of the squared function of the instantaneous values. Since an AC voltage rises and falls with time, it takes more AC voltage to produce a given RMS voltage than it would for DC. For example, it would take 169 volts peak AC to achieve 120 volts RMS (.

“RMS” stands for Root Mean Square, and is a way of expressing an AC quantity of voltage or current in terms functionally equivalent to DC. Also known as the “equivalent” or “DC equivalent” value of an AC voltage or current. For a sine wave, the RMS value is approximately 0.707 of its peak value.

The main differences between an RMS Voltage and an Average Voltage, is that the mean value of a periodic wave is the average of all the instantaneous areas taken under the curve over a given period of the waveform, and in the case of a sinusoidal quantity, this period is taken as one-half of the cycle of the wave.

3 Answers. Attempts to find an average value of AC would directly provide you the answer zero… Hence, RMS values are used. They help to find the effective value of AC (voltage or current). This RMS is a mathematical quantity (used in many math fields) used to compare both alternating and direct currents (or voltage).

RMS, or Root Mean Square, is the measurement used for any time varying signal’s effective value: It is not an “Average” voltage and its mathematical relationship to peak voltage varies depending on the type of waveform.

In mathematics and its applications, the root mean square (RMS or rms) is defined as the square root of the mean square (the arithmetic mean of the squares of a set of numbers). The RMS is also known as the quadratic mean and is a particular case of the generalized mean with exponent 2.

In this case, about 1000 watts RMS, SSL’s website rates it at 1250 RMS. Both are generous figures for a $100 amplifier but let’s just say that’s what it can do at 4 ohms.

You are looking for speaker efficiency; the higher an efficiency rating, means louder per watt. RMS speaker ratings describe the maximum RMS power that an amplifier can deliver without damaging the speaker.

Sample Amplifier Power Rating Chart: