16 June 1976

When South Africa was just about to be introduce to the world of television in 1976. The then South African government which was led by the National Party realised that their hold/control over the Majority would be at risk, as television would be presented in English.

They feared that black people would now become more assertive and be rebellious towards the apartheid regime. To curb the threat and to sustain their supremacy, the government decided to pass a law that would make Afrikaans and English as the only compulsory medium of teaching in school with Afrikaans taking precedence.

In January 1976 the whole commotion started, as the parents wrote in to schools asking for their children to be exempted from being taught in  Afrikaans, and rather be taught in English. The principals writing to the department of education, explaining that the teachers were not ready as they were also not too inclined unto the Afrikaans language. The situation was becoming chaotic amid the students expressing their displeasure to this new education system.
In June 13 1976 a student group led by Tsietsi Mashinini, organised a mass meeting that planed a march on Wednesday June the 16th, that would protest against this education system. We all have an Idea of what happened on June the 16th 1976.

The uprising achieved more things than it was initially planned to. I Would like to highlight but a few.
1. The international spectacle was zoomed upon the  South Africa government.
2. South African City dwellers were given citizenship.
3. The government scrap the pass laws.
4. The people were now allowed to have interracial relations without being prosecuted.

June 16 marked the begging of the end of apartheid era.

@djyongs on twitter

Distance us a bitch

Untitled

Will there ever be another that we've lost?
Has he disappeared?
Is he now the fragment of our imagination?
Is he now a legacy to those that never got to meet him?
Stories are told about him
How he deceived so many
How he became victim of his own worst enemy
How they used him to manipulate that young girl's heart
How he conspired to destroy her innocence
How he helped pour poison on her food
How He helped lift the hands that brought muffled sounds of fists on her flesh
How he made her believe what her father did to her was all in his wonderful name
All in his wonderful name LOVE

He gently undresses her
Caressed her dearly
Touched her tenderly
"Don't worry" he said "I'm doing this in the name of love"
she felt the urge to stop him
A voice insinuating itself towards her mind
She cries out "Stop!"
"I will be gentle" he says
But all in the name of love
She let's him use her
She feels like dirt but let's him
The deed is done
She needs someone to tell her it will be ok
She searches and doesn't find
But all in the name of love
He had stolen her innocence
He had bruised all that was left of her pride
He had destroyed her moral beliefs

But all in the name of love
She him tenderly
Touched him softly
He felt the urge to give her all he had
He would hold back his feelings trying to see where stands
She would make him feel like a king
Make him feel he had seen it all
But all in the name of love
He would stay up all night just to watch her sleep
He would fantasize about her being mother of his kids and she about how he'd make her bank balance mature
But all in the name of love
He commits to her, make her his wife
And she like the wind blows to the opposite direction
Leaving him with a bruised ego
She had destroyed him
She had robbed him off his sense of commitment

But all in the name of love
He touches her in places she had never been touched in fear she cries
"Its okay my baby" he says "this is just to prove my love"
"Do not tell anyone its our own lil secret"
"Daddy u hurting me please stop!" She cries
But all in the name of love

he continues hurting her
She cries till there are no more tears in her eyes
The house was not big enough for the two them anymore
She decides a life had to be taken another spared
Is it his or hers?
He Is still my father, a dog but still my father
But all in the name of love
She decides to take hers and spare his
His conscious plays tricks on him
He cannot spend a day sober trying to forget
Every night he returned home to his who had always done her best to please him
But all in the name of love

He would beat kick, beat and throw her around
Unable to fight she would lie helplessly on the floor fearing for her children's safety
But all in the name of love
They blamed their mother for what the father did to her
She has no one to turn to
She had had enough
She wasn't to take it any longer
She poisons his food
But all in the name of love
She had killed him
She had destroyed her own moral beliefs
She had taken a life
She lived to be destroyed
But all in the name of love

Love has become his own worst enemy
He has destroyed so many
So many wrongs have been done in his name
Will there ever be another that we've lost?
Has he disappeared forever

By Bongiwe Gajana

love leave me

Love leave me, I know you well
You nothing but a blur gleam of reality
You are a slave to my conscience
A scented inhale of grief and misery
You nothing but a whore in a brothel
You are Worthless to my worth
Thoughts of you sicken me to the core

Now leave!  Go curse another soul and leave mine untainted

You no longer welcomed here, gone are the days
Where I worshiped you amongst subconscious desires
Mused you as perfect
Submitting myself to you willingly
Obeying your pathetic fable rules
Chained by your expectations

To what virtue? A pebble soul

You nothing but a blackened curse
An embrace of the devils hand
Fiery amber to the heart
Feeding on pain, concealing on cries, love you evil

Leave who I am
Leave me
Leave.

By Solulele Imihla-Yethu Dlova

 

How drives save energy

Brochures and Case Studies Applied Case Studies Reference Material How Drives Save Energy Software Registration

How drives save energy Energy is defined as the capacity of a physical system to perform work. In essence, energy is a fundamental quantity that can exist in a range of different forms, most notably heat, light, kinetic, electrical and potential energy. Energy cannot be created or destroyed, but can transition from one form to another. For example, the kinetic (movement) energy from a clap can become sound energy when hands make contact with one another. Energy efficiency refers to the proportion of useful energy that can be converted from a source into a desired form. In any energy transfer, the output ‘desired energy form’ (if measured in joules) is always less than the energy source in joules because during the conversion some energy is expended in different forms during the conversion. Stand alone motors cannot alter their speed. They are designed to rotate at a set speed based on the number of magnetic poles built into them and the supply voltage and frequency applied to them. Even for fixed speed systems, it may be difficult to find a motor that rotates at the correct speed for its designated application. Extra parts may need to be purchased such as: Gears Process controls (dampers) AC drives All motors have a nameplate that indicates how fast they will rotate, in revs per minute (rpm), at a given voltage frequency and load current. AC drives are devices designed to provide effective speed control of AC motors by manipulating voltage and frequency, and therefore the magnetic flux inside the motor circuit. Controlling the speed of a motor using modern AC drives not only provides users with much improved process control, but can also reduce wear on machines, increase power factor and provide large energy savings. Most application load profiles can be grouped into the following torque categories: Constant torque load - such as conveyors, often require a starting torque close to the rated torque of the motor and show only small changes as they approach rated speed. Linear torque Loads - such as screw compressors, have a more linear torque requirement that increases proportionately with speed. Variable torque loads - such as pumps and fans have torque requirements that increase in proportion to the square of the speed and reach 100% torque just below rated speed. Using speed control, the most significant savings can be made on applications that obey a variable torque requirement, such as pumps and fans. Because of the cube law relationship between speed and power, simply reducing a fan speed by 20% can yield a power saving of almost 50%. Reducing the speed of the motor is usually the first step in reducing the energy bills as small changes in speed can reap large energy savings. AC drives provide the means to this; but can they also do more? Square law fluxing Square law fluxing, sometimes called ‘fan fluxing’ or ‘square law’, is a feature within Control Techniques AC drives which can provide further energy savings when controlling variable torque loads such as pumps and fans. Varying the speed of variable torque loads can yield power savings proportional to the speed reduction cubed. This is because power is a product of torque and speed, with variable torque loads having torque requirements that increase in proportion to the square of the speed. In linear voltage-frequency mode, AC drives can provide 100% torque up to rated motor speed, meaning that, in variable torque applications, there is always plenty of torque capability ‘in hand’ below rated speed. Square law mode manipulates the linear voltage to frequency relationship so that the torque capability, and hence flux, in the stator windings of the motor is reduced, reducing losses. Dynamic V to F mode Control Techniques drives include dynamic V to F mode which is intended for applications where power loss in the motor should be kept to a minimum under low load conditions. In this mode the drive will vary the voltage to frequency characteristic it applies to the motor depending on load level, such that at light load levels the voltage on the motor is reduced for a given frequency. This reduces the magnetizing (or flux producing) current which in turn reduces losses in the motor. PID control As previously discussed, AC drives can significantly reduce energy consumption by varying the speed of the motor to precisely match the effort required for the application. To vary the speed of the motor dynamically, a closed-loop regulator (or control loop) that takes into account the measured output of a process is required. Common applications where this is used include pressure, level and temperature control. The most common method of regulation is the PID (Proportional-Integral-Derivative) control loop. All Control Techniques drives have either single or multiple PID loops integrated within the product. Active Front End Systems (AFE) The input stage of a non-regenerative AC drive is usually an uncontrolled diode rectifier, therefore power cannot be fed back onto the AC mains supply and excess energy in the system is ‘dumped’ in a power resistor and therefore converted to heat. AFE systems use a controlled IGBT rectifier bridge which enables energy to flow bi-directionally to and from the mechanical system and the AC supply. This provides far greater efficiency levels than standard AC drives in applications where electrical braking of the mechanical system would result in significant amounts of energy being wasted within the braking resistor. Control Techniques standard Unidrive SP AC drive modules can be connected as an AFE system. Two drives are used, one to control the flow of energy from the line supply to the DC bus and the other to control the flow of energy from the DC bus to the motor. The main advantages of an AC regen system are: Energy saving The input current waveform is sinusoidal The input current has a near unity power factor Power factor correction can be implemented Common DC bus systems DC bus systems offer an another approach to reduce running costs by circulating energy between braking and motoring drives. An application example where this is particularly effective is systems where material is unwound and then re-wound. In this application it is important to maintain tension in the material, to achieve this the unwinder is constantly braking and the winder is constantly motoring. In a perfect system, the net energy required is just enough to supply the system losses. Combining an AFE with a common DC bus systems offers the maximum power system flexibility, allowing energy to flow between drives and bi-directionally with the line supply. It is common in these applications for a single AFE unit to be used with many DC bus connected drives, the AFE is rated for the requirements of the system. Calculating the Return on Investment (ROI) for energy saving applications Control Techniques energy optimising software helps you analyse the energy usage for different applications and calculate cost savings using AC drives. The main features of the software are: