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WikiCards · Card list · Science cards · Operational amplifier
Uncommon card · Science
Operational amplifier, an Uncommon card
An operational amplifier is a DC-coupled electronic amplifier with a differential input, a single-ended output voltage, and an extremely high gain.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 77
- DEF
- 71
- Power
- 148
- Wikipedia reads a year
- 160,000
Power 148 (ATK + DEF): stronger than 75 % of WikiCards cards.
Operational amplifier quiz: 3 questions
Three questions on the Operational amplifier card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Its name comes from its original use of ______ mathematical operations in analog computers.
Answer
performing. Its name comes from its original use of performing mathematical operations in analog computers. From the Operational amplifier article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Inverse trigonometric functions. Inverse trigonometric functions 82 · Operational amplifier 77 · Full moon 73 · Wilhelm Röntgen 70 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Its name comes from its original use of performing mathematical operations in analog computers.
- The voltage-feedback opamp amplifies the voltage difference between its two inputs, while the less common current-feedback op amp amplifies the current between its two inputs.
- By using negative feedback, the characteristics of an op amp application circuit can be determined by external components and have little dependence on temperature coefficients or engineering tolerance in the op amp itself.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Operational amplifier article was read about 160,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 77 and blocks with 71: each hit it takes is cut by 28 %.
How to get Operational amplifier
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Operational amplifier in the power ranking, all domains together.
- CroquetteUncommon · Society · ATK 72 DEF 76
- Grand CanalUncommon · Arts · ATK 80 DEF 68
- Michael VaughanUncommon · Society · ATK 79 DEF 69
- Wilson PickettUncommon · Arts · ATK 76 DEF 72
- Byron ScottUncommon · Society · ATK 78 DEF 70
- Carnegie libraryUncommon · Arts · ATK 74 DEF 74
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Operational amplifier (revision), CC BY-SA 4.0. Photo : Teravolt ( talk ), CC BY 3.0, Wikimedia Commons.
