![]() ![]() After that, solder the fixed ends of a 10K pot with pin 4 & pin 8 of the IC.Ģ) Solder a 1K resistor between pin 3 of the LM358 & the wiper pin of the 10K pot.ģ) After that, Solder the +ve terminal of the 0.1uF capacitor with pin 2 of the IC & -ve terminal to pin 4 of the IC.Ĥ) After that, solder a 1K resistor with the gate pin of the IRF540 MOSFET.ĥ) Now solder a 10K resistor between pin 1 & 2 of the IC. You will need the following parts to build this project: S.Noġ) Solder the LM358 IC on the Veroboard. The operating temperature ranges lie in the ranges of 0˚C – 70˚C at ambient whereas the maximum junction temperature can be up to 150˚C. The maximum current rating for the LM358 IC is 700uA. The IC is integrated with two op-amps powered by a common power supply. The supply current for LM358 is 500uA, independent of the supply voltage range. The main part of this PWM configuration is the LM358 dual op-amp IC. It is the ratio of the On time of the pulse to the total time period. It defines the time period of the PWM signalĭuty Cycle: Duty Cycle defines the ON time of the pulse. Switching Frequency: Switching Frequency defines how fast the switching takes place. With PWM signal generation two configuration parameters are always associated: So, in today’s tutorial, we are going to design a simple Pulse Width Modulation (PWM) Signal Generator Using the LM358 Op-Amp IC. Some basic examples are dimmers to control and vary the voltage of light fixtures and appliances such as fans, power supplies (DC – DC Converter, SMPS), etc. Because of its high efficiency, low power loss and it’s ability to precisely control power, this technique is used in many applications. It is a modulation technique whereby changing the width of the digital control signal, the power delivered to any load is controlled. Pulse width modulation is a signal optimization technique used to control analog devices. Related posts: What is Pulse Width Modulation (PWM)?
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