Hey Hero! what i want is that, what i've designed the Oscillator, i should use it in the Circuit.
i'm including the schematic. but a 741 Ic can provide Max: 20mA but as you know the motor require 2.4A. so tell me that how can get more output Current? what i think is to simply replace the 741 Ic with an OPAmp that can provide 3A or More at the output. i think it is possible. what do you think? if YES then tell me how?
Thanks
You must amplify the current of the opamp sine-wave generator plus you must amplify its voltage.
A linear (class-B or class-AB) audio amplifier would make a lot of heat so a class-D switching amplifier can be used.
But I have never seen a class-D audio amplifier with an output voltage as high as you need so it must drive a stepup transformer that increases the output current of the amplifier.
You must use a power amplifier to boost the current enough. The current into the low voltage primary of the transformer will be much higher tham the motor's current.
A linear power amplifier will produce almost 400W of heat. A class-D power amplifier will produce only 60W of heat.
Now this is the problem that We can use class B amplifier because losses energy in heat form and Somehow Can't use class D Amplifier because it is Damn! Hard to design. we'll find a way in between them.
Hey Guys One Rediculous Question araises in my mind is. after my Oscillator Stage which is providing 20mA. Can i use a power Amlifier? will this Amplifier increase POwer when the max: output of 741 is 20mA?
and help me in my circuit.
Thanks