Abstract:
In the experiment, the application involving the operational amplifier was investigated. A ±15volts voltage is supplied to the op-amp. The 15volts also the working ranges for the op-amp. There are two basic op-amp circuit, inverting and non-inverting amplifier. For an ideal op-amp, the voltage gain of the circuit is the function of ratio of resistor. There are also other configuration investigated like the buffer amplifier which has the same input and output voltage and the summing amplifier. When a capacitor is connected as a feedback element, the output voltage is the integral of the input voltage. The summing and difference amplifier is basically the same concept with the basic circuit of inverting amplifier
Introduction:
Operational amplifier, op-amp is a voltage amplifier electronic device. There are several kind of op-amp like linear, non-linear and frequency dependant. The op-amp is normally made up of 20-30 transistors. Below are the examples of the most common op-amp. The op-amp is three terminal devices, which is inverting terminal, non-inverting terminal and the output terminal. In the ideal case, op-amp has a infinite input impedance, infinite open-loop voltage gain and zero output impedance.
The invention of op-amp is still new which less than 100years. However, the op-amp is now widely used in electronic device or even the musical instrument. Using different connection to the input resistance and feedback resistance, the op-amp can bring out different kind of application. The most common inverting amplifier is actually the same concept and function with the RC circuit. Op-amp can use in low pass and delay function.
Equipments and Components a) µ741 Op-Amp. 2x (100 kΩ, 20 kΩ, 10 kΩ), 2kΩ, 1.5 kΩ, 100Ω, 4.7 nF b) Signal Function Generator, Oscilloscope, DC power supply
Procedure:
+15V and -15V was connected to pin 7 and pin 4 respectively for the op-amp. Pin 1,5,8 remain no connection.