LC oscillator

284

05:23:02

unununununun

published 11 years ago

faceblast

11 years ago

in simulation it's just positive feedback from the LC being inverted. in practice the opamp output will give up sinking and sourcing large currents very quickly

thebugger

11 years ago

Yeah it's quite wasteful and I don't think that this type of IC amplifiers exist in real life. I mean a power amplifier IC's exist but most of them if not all of them have a narrow frequency response defined in the AF range.

hurz

11 years ago

There are several ways to lower the output load. First, go down with opamp supply e.g. +-3V, than add an resistor in serial to L e.g. 47ohm. Third, make the hysteresis much smaller e.g go up with positive feedback resistor to 1meg. Now its within realistic opamp cababilities. 180 db opamp gain is not needed. Its by far enough to use the default 100 dB

hurz

11 years ago

I forgot, the best way is to go from serial resonating phase shifter to an parallel. This circuit here has a theoretical zero ohm impedance in resonace. See my post

pedroretro

11 years ago

Invert gain is beautiful sinus.

youyou

11 years ago

什么？

gopalbiswas

10 years ago

6 ft to

redpistonegon54

7 years ago

"Ununoctium"? No,it's called Oganesson!

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