I have decided to renovate the very basic foundation of pedagogy of electronics so that the aspirers get a better hold of the subject and be confident when they are asked to deal with larger or complex analog and digital circuits. I am thankful to a Bulgarian Analog circuit design guru named Prof. Cyril Mechkov, who has been the kind of person I’ve been looking for, to seek world-class education via Internet, through his web resources. I shall interpret few Analog circuit design concepts oftentimes through this blog, in a format understandable by a novice analog circuit designer, or even a Financier of a Rock Concert.
Well, did I say ‘Rock concert’? Yes I did. So, let me take up a Rock Concert organized by a crew not more than Seven members. Each crew member has his/her own role to play in order to run the show successfully. Let me introduce the crew:
1. The Financier is very important since not only will he finance the Organizer, but the entire crew. The Financier is the ‘VOLTAGE SUPPLY’ (could be variable; during Recession/Boom).
2. The Organizer is the key crew member who is highly unpredictable: he either runs the show or the show must run for him. The organizer is none other than the ‘LOAD RESISTOR’ (variable, of course).
3. The Band Manager: The Band Manager is a Variable Resistor (a potentiometer) who shall take care of the Rock Band (power them accordingly). He sets the BASE CURRENT.
4. The Bodyguards: The Bodyguards are Shielding RESISTORS in series with Organizer and Band Manager in case someone tries to mess with them (creating a short/open circuit since they are variable resistors).
5. The Rock Band: The ROCK BAND is our one and only, world famous, life transforming, TRANSISTOR (BJT) with BASE being the drummer, EMITTER being the Guitarist and the COLLECTOR being the Vocalist.
6. The Watchmen: The Watchmen are VOLTMETERS who keep a watch on (Voltage across) the Organizer and the Rock band, only during the show.
7. The Undercover: The Undercover is an Ammeter keeping an eye on the very purpose of the show, the COLLECTOR CURRENT, the very MUSIC driving the Rock Band and the Organizer, irrespective of the pressure from the Organizer or the Financier himself.
The following is the ramification of the Rock Concert crews in the form of a circuit, or vice versa:
The day of the Concert
Few sponsors this time and the Organizer has his fingers crossed on the Rock Band.
CASE I: A call from an Ad agency, an altercation and the Organizer is very angry, he builds up pressure (the LOAD RESISTANCE increases), The watchman 1 is alert (Voltmeter 1 shows rise in Voltage across the Load resistor: As Mr. Ohm once said “Resistance builds pressure”).
CASE II: Wait a minute, what would happen if the Organizer showed no interest in the Band? (What if the Load resistance decreases?) The watchman 1 is relieved (the voltage drop across Load resistor decreases). The Rock band needs to pace up a little, the watchman 2 is alert now (the voltage drop across the CE of BJT increases thus increasing the CE resistance: so the overall resistance is constant, hence constant Current) thus keeping the show prevailing. The concert would be successful in this case too.
CASE III: Convinced are you? You shouldn’t be because the recession is showing up and the Financier seems trembling. The financier needs to cut cost by financing every crew members but the Manager and his Body Guard. So, Irrespective of how efficient or inefficient the Organizer be, how famous the Rock Band be, when the financier trembles, everyone trembles (Since the main voltage is supplying voltage for every component including the Potentiometer and the shielding resistance in series with it, with a variation in main voltage, even the current through the Potentiometer is affected and so is the BJT, the Rock Band).
As is said by great men, only Technology and Strategy can beat Recession, only a good conceptualization can help the Rock Concerts give their best all the time. Now a Separate financier is needed for the Manager and his Bodyguard. Manager is Important because he plays with the contracts and endorsements with various organizers, he promotes the Band. The Manager is clever, he knows that he can’t rely on the financier of his organizers; he knows he needs to be equipped in any case. What does he do? What is the new concept implemented? Until next time........
Well, did I say ‘Rock concert’? Yes I did. So, let me take up a Rock Concert organized by a crew not more than Seven members. Each crew member has his/her own role to play in order to run the show successfully. Let me introduce the crew:
1. The Financier is very important since not only will he finance the Organizer, but the entire crew. The Financier is the ‘VOLTAGE SUPPLY’ (could be variable; during Recession/Boom).
2. The Organizer is the key crew member who is highly unpredictable: he either runs the show or the show must run for him. The organizer is none other than the ‘LOAD RESISTOR’ (variable, of course).
3. The Band Manager: The Band Manager is a Variable Resistor (a potentiometer) who shall take care of the Rock Band (power them accordingly). He sets the BASE CURRENT.
4. The Bodyguards: The Bodyguards are Shielding RESISTORS in series with Organizer and Band Manager in case someone tries to mess with them (creating a short/open circuit since they are variable resistors).
5. The Rock Band: The ROCK BAND is our one and only, world famous, life transforming, TRANSISTOR (BJT) with BASE being the drummer, EMITTER being the Guitarist and the COLLECTOR being the Vocalist.
6. The Watchmen: The Watchmen are VOLTMETERS who keep a watch on (Voltage across) the Organizer and the Rock band, only during the show.
7. The Undercover: The Undercover is an Ammeter keeping an eye on the very purpose of the show, the COLLECTOR CURRENT, the very MUSIC driving the Rock Band and the Organizer, irrespective of the pressure from the Organizer or the Financier himself.
The following is the ramification of the Rock Concert crews in the form of a circuit, or vice versa:
The day of the Concert
Few sponsors this time and the Organizer has his fingers crossed on the Rock Band.
CASE I: A call from an Ad agency, an altercation and the Organizer is very angry, he builds up pressure (the LOAD RESISTANCE increases), The watchman 1 is alert (Voltmeter 1 shows rise in Voltage across the Load resistor: As Mr. Ohm once said “Resistance builds pressure”).
- The Rock Band is called upon and instructed by the Organizers to give their best on the stage (The BJT must perform well to keep the flow, to keep the game ticking, to keep the current through the load constant).
- The Manager instructs the Rock Band to perform the way he wants (The Potentiometer sets the BASE current).
- The show begins, the Rock Band gives their best and ease the tension, the Watchman 2 is relieved (The Voltage drop across the CE decreases since it has to compensate with the increase in voltage across Load resistor) and the overall situation is normal (Since Voltage across CE decreases, the Resistance across them decreases too, thus compensating the increased Load resistance).
- The Undercover sees no problem and ensures that everything is fine (The Ammeter shows constant current throughout the show). A successful concert at last!
CASE II: Wait a minute, what would happen if the Organizer showed no interest in the Band? (What if the Load resistance decreases?) The watchman 1 is relieved (the voltage drop across Load resistor decreases). The Rock band needs to pace up a little, the watchman 2 is alert now (the voltage drop across the CE of BJT increases thus increasing the CE resistance: so the overall resistance is constant, hence constant Current) thus keeping the show prevailing. The concert would be successful in this case too.
CASE III: Convinced are you? You shouldn’t be because the recession is showing up and the Financier seems trembling. The financier needs to cut cost by financing every crew members but the Manager and his Body Guard. So, Irrespective of how efficient or inefficient the Organizer be, how famous the Rock Band be, when the financier trembles, everyone trembles (Since the main voltage is supplying voltage for every component including the Potentiometer and the shielding resistance in series with it, with a variation in main voltage, even the current through the Potentiometer is affected and so is the BJT, the Rock Band).
As is said by great men, only Technology and Strategy can beat Recession, only a good conceptualization can help the Rock Concerts give their best all the time. Now a Separate financier is needed for the Manager and his Bodyguard. Manager is Important because he plays with the contracts and endorsements with various organizers, he promotes the Band. The Manager is clever, he knows that he can’t rely on the financier of his organizers; he knows he needs to be equipped in any case. What does he do? What is the new concept implemented? Until next time........
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