# Electronics

 The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What three parts does any electronic system consist of? Input Process Output Analouge signals can have ______ values? many Digital signals can have only two values. We can descirbe these as....? On/offHigh/low1/0 What is the energy change in a themocouple? Heat ---> electrical What is the energy change in a micophone? Sound ---> electrical What is the energy change in a solar cell? Light ---> electrical The resistance of a thermistor changes as its _______ changes? temperature If a thermistor's temperature goes up its resistance goes.....? Down The resistance of a LDR increases as the light level....? Decreases What is a capacitor? A device which stores electrical charge As a capacitor charges up the voltage across it increases from 0 to the _______ voltage? Supply What does the time taken to charge a capacitor depend on? The value of the capacitorThe resistance of the circuit Name an analouge output device and state what energy change takes place within it Loudspeaker: electrical ---> soundElectric motor: electrical --->kineticMoving coil meter: electrical ---> kinetic Name a digital output device and state what energy change takes place within it Solenoid: electrical ---> kineticRelay: electrical ---> kineticLED: electrical ---> light A _______ is connected in series with an LED? resistor What is the resistor, connected in series with an LED, needed for? To make sure the LED gets the correct current and voltage. IT IS A CURRENT LIMITING RESISTOR What are the three types of Logic Gates? ANDORNOT What is the other name for a clock pulse generator? Simple oscillator How do we get more clock pulses every second? Decrease the resistance of the resistor Decrease the value of the capacitor What is this number: 1001? 8 0 0 1 = 9 What is this number: 1010? 8 0 2 0 = 10 What is this number: 0101? 0 4 0 1 = 5 What is a transistor used as in a circuit? An electronic switch What does an amplifier do? It increases the amplitude of the electrical input signal What is the formula for voltage gain? Vgain = Vout / Vin AuthorAnonymous ID63415 Card SetElectronics DescriptionStandard Grade Physics - Electronics Updated2011-02-01T17:30:34Z Show Answers