hello. i require a suggestion for an IC used for PWM. right now i am working with 555 for generating a pulsating DC output but the issue is that 555 only allows a current of 200 mA. If it is possible can anyone help me out to know about wht i can use to replace this 555 so that i can play with the currents upto 1A.
hey..
i have actually tried that but i am unable to control the amplification of the current as it WILL give hfe^2 times the current even if it is not required... so are there any IC havin current rating of atleat 1 A which can give me a pulsed DC op atleast...?
no sir i tried that also but in the end it was all to complicated i also tried a lot many types and combination of transistors but the results were not that satisfactory. are you aware of any IC with a higher A rating. i am asking this again n again as i am unaware of any other way to increase the current, if you have any other suggestion u can put that forward also. thank you sir.
I've also realized that a relay wouldn't work because of chattering which might cause arcing, in addition to that, the time required for the magnetic field to decay.
Another idea I just thought of is use of a SCR, though I don't think it would do nice things to the 555 timer.
ok sir. jus to check by SCR u mean Semiconductor controlled rectifier right ? i havnt worked wit it yet but i think its somwht like a Zener diode. if u have any related circuits please help me out with those also. thank u
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also i am tryin to remove the 555 completed from the circuit and hence need a new ic