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- Q3 /A)- Design an electronic circuit to drive Four (4) LEDs by using 741 Op-Amp. The internal resistance of each LED is 70 ?. The 741 Op-Amp can carry out maximum output current 20 mA, and requires minimum voltage of 5 V. After completing your design explain why used this kind of connection in your design ( you can use Ohm’s Law in yours explanationThe last one is RESIGN INACCURACIES this relates to the type of machine or the process used during printing; the printers have a low tolerance meaning that the final product or parts after printing looks different from the original design. It could be fixed but this will increase the time and cost of production.im asking again because it was given a wrong answer
- Also ExplainWhat precisely does "smoke testing" mean?8051 EdSim51 Simulator - LED and Switch sw0---> Led0-led3=On led4-led7=OFF sw1---> Led0-led3=OFF led4-led7=On sw2---> Led0-led3=On led4-led7=On sw3---> Led0,led2,led4, led6=On led1,led3,led5,led7=OFF sw4---> Led0,led2,led4, led6=Off led1,led3,led5,led7=On
- FACTS: AC-DC converters take the AC power from wall outlets and convert it to unregulated DC. These power supplies include transformers that change the voltage of the AC that comes through wall outlets, rectifiers to save it from AC to DC and a filter that removes noise from the peaks and troths of the AC power waves. The DC-to-AC Converters are used to charge the batteries in the vehicles. These circuits are mainly used for driving low-power AC motors and are used in a solar power system. The DC to AC converters can be used in dc transmission lines for transmitting power to loads. QUESTION: What do you think is the main reason why we have AC power in our outlets instead of DC power? Explain your answer.Case study: Students and staff purchase ready to eat snack-foods such as chocolate bars, cookies, chips, drinks, etc. using an automated vending machine. Each snack-item has a price and a name. Any customer can buy an item, using funds available on the university identity card to pay for it. Cash payments are not allowed. The vending machine has a card reader. Customers tap their ID card against the card-reader. The card-reader reads the card and stores its details for the duration of the interaction. After the card is verified, the customer may choose the snack item and opt to buy it. The vending machine will verify that there is sufficient balance on the card to pay for the item and automatically deducts the amount towards the purchase of the snack-item if sufficient funds are available. The customer can buy as many items as they’d like. Task: Draw a sequence diagram depicting a successful sale scenario for the case study described above.Give a list of probable explanations for why individuals often switch off their cellphones or computers. Sleeping differs from hibernation.