LC oscillator 50Hz

215

04:12:55

Charge first the capacitor and then switch to realize a LC resonator.
The resonance frequency is gaven by 1/2*3.14*sqrt(L*C).

published 10 years ago

hurz

10 years ago

Yes, but is such a low frequency of 50Hz practical for a LC oscillator? Check the current at the diode. Its very high, about 1000times higher a std opamp can provide. Why is this? Impedance is the key to understand. Xc=Xl=2*pi*50Hz= 0.314 Ohm ! This is very low and the reason to not use LC oscillators at low frequencies. Better use RC ones. Hope this helps.

Spreedator1000

10 years ago

That's similiar to my oscillator circuit

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