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What kind of amplifier is The LM358?
LM358 is an operational amplifier. An operational amplifier is amplifying device with very high gain and very high input impedance & low output impedance. The most common device that we have for amplification is a transistor, but the limitation is it amplifies current but not voltage.
What are the inputs and outputs of an LM358 IC?
Here is a SoundCard Oscilloscope. Back to the device, an LM358 IC has dual OPAMP inside, pin 2,3 are inputs & pin 1 output of 1st OPAMP and pin 5,6 & pin 7 are of other. Resistor R4 and R5 (10k both) make voltage divider circuit for 2V5 supply and set the desired potential at non-inverting (PIN 3) input of OPAMP.
Which is the closed loop gain of an amplifier?
R2 is a 100 K Resistor which provides feedback path and determines the gain. R2 and R1 both together decide the closed loop gain of the amplifier as the gain of inverting amplifier is given by G=R2/R1 (100/1). Capacitor C1 is a coupling capacitor. The audio signal needs to be coupled with DC voltage for amplification which done by capacitor C1.
What is the voltage gain of LM358 IC?
It has large dc voltage gain of 100dB. This IC can be operated on wide range of power supply from 3V to 32V for single power supply or from ±1.5V to ±16V for dual power supply and it also support large output voltage swing. Why lm358 is used in IR sensor?
Can a LM358 be used as a LDR?
LM358 consists of two independent, high-gain, frequency-compensated operational amplifiers designed to operate from a single supply over a wide range of voltages. This module can also be used for testing an LDR, a phototransistor and a photodiode. You just need to replace an LDR with phototransistor or photodiode, the circuit simply works.
Can a LM386 be used as a pre amplifier?
The LM386 is a complete audio power amplifier, the LM358 is a dual operational amplifier. When using the LM358 e.g. as a pre-amplifier, you will have to supply a separate power amplifier.