![]() ![]() The LM358 IC available in four different types of packages, these are DSBGA, PDIP, TO-CAN, and SOT-23(5). This is an 8 pin IC available in different packages. The IC’s each op-amp can handle 3-32V DC supply & current up to 20mA. The IC is designed like that the Op-Amps are operating from a single supply or split supplies over a wide range of voltages. It consists of two independent, high-gain, frequency-compensated operational amplifiers (Op-Amp). This Op-Amp IC designed and introduced by the national semiconductor. ![]() The LM358 is one type of dual-channel operational amplifier (Op-Amp). Here we will discuss the Introduction to LM358 comparator IC, IC pin diagram, Working Principle of LM358 comparator IC, Features, LM358 IC Equivalent IC, advantage and it’s applications. This blog is base on the LM358 Op-Amp IC. The time for which the output stays high can be controlled by a suitable RC application.Hello friends! Welcome back to ElectroDuino. The output will go to high (‘1’) for a certain time and it will come back to the low state. When we give a low signal to a trigger pin. By default the output of this circuit will be low (‘0’). “For a single low trigger input, the output pulse goes to high (we can increase or decrease the ‘high state’ time) and come back to low. By connecting different values of resistor and capacitor to a 555 timer we can use it for countless applications. This LOW was sensed by the trigger pin (pin 2), which makes the 555 to produce the monostable output time is set by resistance R5 and capacitor c5.īasically, 555 timers is an 8-pin integrated chip which has capable of producing accurate time delays or oscillation. Once the T2 was in ON, the voltage across collector-emitter of T2 will be low. Due to this, the voltage across the collector-emitter of T1 was high this makes the T2 to turn ON. Due to this, there is no current flow to the base of T1 which makes the T1 to turn OFF. As discussed before trigger requires low signal to on the 555.When the sound was detected by the mic the resistance of the mic will become high. When T2 is turned off the voltage across collector-emitter of T2 was almost equal to the source voltage. So that no voltage across base-emitter of Transistor2 that is the reason why the T2 is in off state by default. That current helps the Transistor1 to turn on.Due to this, the voltage across the collector-emitter of T1 is zero. Due to the low resistance of the mic the sufficient amount of current will flow to the base of Trassistor1. When we power up the circuit, the current will flow from source to the (+ve) mic and leaves at (-ve). According to that, all we have to do is to provide a low signal to the 555s TRIGGER pin (pin 2) to switch on the light for a desired time. In the right part of the circuit in “ how to get the monostable output using 555 timer “. Now Consider the above circuit into 2 parts, the job of the left part of this circuit is to give the low signal to the right part, which has 555 timer. The voltage regulator 7805 is will regulate the voltage and transfers 5v to the circuit. The c1 and c2 is use to filter the pulsating dc and provide pure dc. Then this ac is fed to bridge rectifier to rectify it into pulsating dc. The transformer T1 will step down the 230v to 12v ac. This will help us to search some objects in the dark, when you are watching TV or lying on bed etc. We are going to make a simple clap switch, how to switch on the lights, for a while, with a single clap. ![]()
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