I am making a pwm inverter and i have made almost 8 power supplies to power my opamp among which 3 are in working condition so things will be always going wrong in this projects. I would really recommend you to do Your project using 741ic. You will really learn how this stuff works. To begin prepare a power supply of +15 0 -15. Also you can get your desired frequency with changing RC and amplitude which would depend on supply that you are giving to your 741ic.I have tried this several times witha depressing lack osucess. look for achip with all th funtions, theyarout there,
Yes, no, no.You can generate square using 555 timer ic or 741 opamp circuit diagrams you can find online. Giving this square wave input to integrator using 741 which you can find online again gives you Triangle wave and finally sine wave you can get it using 9-0-9 or any small rated transformer.
What you describe will work at exactly one frequency only. Since you don't say where the sinewave input to the transformer comes from, I can assume only that you mean to use the AC powerline. The entire circuit can be adjusted to work at the powerline frequency, but that is way less than 1% of the required frequency range.Or you can do like from 9-0-9 transformer you can get sine wave. Fed that sine wave to ZCD (zero crossing detector) circuit using 741 which gives you square wave again giving that square wave to integrator gives you triangle wave. Thus getting everything that you require in flow!..
That circuit has several problems; it will barely work at one frequency, and is not adjustable in a practical sense. More later, gotta run.I tried the circuit in the following link:
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