the screen display and the control settings. y - GAIN Volts/cm TIMEBASE ms/cm 1.0 2.0 5.0 0.5 0.1 1.0 50 100 500 Determine the frequency of the pulses at the input. Assuming the oscilloscope controls are not adjusted, redraw the trace you would expect to see if the oscilloscope was connected to the output of the circuit. The same components are now used to wire the op. amp. in the non-inverting configuration. Re-draw the new circuit diagram and the trace you would expect at the output this time.
APPLIED ELECTRONICS Outcome 2 Unit Assignment (2) When a tacho generator is rotated, it produces a voltage Proportional to it's angular velocity. The tacho is to be used to monitor the speed of coolant flowing along a pipe. If the speed is below a recommended level then an alarm should come on, if the speed is above this level then a green light should come on. Draw a circuit diagram of the system that could be used and explain how the system works.
APPLIED ELECTRONICS Outcome 2 Unit Assignment (3) Part of a disco audio system consists of the microphone connected to a circuit containing op. amps. as shown below. The circuit should provide a visual indication of sound level. 1k 1M 6V MICROPHONE Name the Op Amp configurations used It was found that the circuit did not operate as expected. Simulate the circuit and suggest a solution with justification.
APPLIED ELECTRONICS Outcome 2 Unit Assignment (4) A robot is designed to follow a white line painted on the floor. The robot moves by means of suitably geared motors which can be switched on and off independently. W H I T E L I N E The left sensor controls the right motor (and vice versa). When a sensor detects a white line, the motor is switched on. Suggest a suitable detector that could be used to detect the white line. Explain how the robot follows the white line. Design a suitable circuit that could be used to control one of the motors.
APPLIED ELECTRONICS Outcome 2 SEB & SQA Past Paper exam Questions 1993, Paper 1, question 1 Name the configuration of the amplifier shown below Calculate the gain of the amplifier, (i) If the input signal Vi is 0.5 V, what is the value of the output signal Vo?
6k A B
C B A
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