lab 21 report

lab 21 report - Objective 1. To demonstrate the voltage...

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Objective 1. To demonstrate the voltage comparator and to investigate the effects of adding hysteresis. 2. To demonstrate the use of voltage comparators in astable multivibrators. Equipment List 1. 741 operational amplifier or the equivalent. 2. DC power supplies(±15V, 5V) 3. Analog signal generator 4. Resistors: 1-470kΩ, 1-100kΩ,1-4.7kΩ,2-1kΩ 5. Capacitors: 1-0.1µF (25V) 6. Dual-trace oscilloscope Schematics
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Procedure 1. To investigate the use of an operational amplifier as a voltage comparator, connect the circuit figure 2. Connect a dual-trace oscilloscope so Vs and Vo can be observed simultaneously. 2. With Vs set to produce a 10 Vpk sine wave at 1kHz. Sketch the output voltage and input voltage. Be sure to note the levels of Vs at which the output voltage Vo changes level. 3. Connect the Schmitt trigger shown in figure 3.
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4. Repeat procedure step 2 for the circuit of figure 3. 5.
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lab 21 report - Objective 1. To demonstrate the voltage...

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