#### Lightium

##### Active Member

I am playing with the following circuit.

I can get it to osc. from 340Hz to 60MHz, but I can't go higher or lower. Has anyone seen this circuit before and know what would an equation be to express this circuit? It seems that the frequency is controlled C1, L1. f=1/2*pi*sqr(C*L) and has well as R2, but I don't know how to include R2 into the formula.

I can get it to osc. from 340Hz to 60MHz, but I can't go higher or lower. Has anyone seen this circuit before and know what would an equation be to express this circuit? It seems that the frequency is controlled C1, L1. f=1/2*pi*sqr(C*L) and has well as R2, but I don't know how to include R2 into the formula.

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