*Wien Bridge Oscillator R1 101 102 4.7k C1 102 103 0.033u R2 103 0 4.7k C2 103 0 0.033u IS 0 4 PWL(0mS 0 .1mS 5.0 .4mS 5.0 .5mS 0 1mS 0 ) X2 103 4 101 AMP .SUBCKT AMP 13 24 41 R11 11 12 1 X1 13 12 11 OPAMP R21 11 22 1k R24 24 22 1k R22 22 21 5k R23 23 0 1m X2 23 22 21 OPAMP R31 21 32 1k R32 32 31 1k D31 32 31 Diode D32 31 32 Diode R33 33 0 1m X3 33 32 31 OPAMP R41 41 42 1 X4 31 42 41 OPAMP .ENDS .SUBCKT OPAMP 1 2 6 R_in 1 2 10MEG E_gain 3 0 1 2 100k R_p1 3 4 1k C_p1 4 0 1.59p E_buffer 5 0 4 0 1 R_out 5 6 10 .ENDS .MODEL Diode D () .PLOT TRAN v(103) .TRAN .1m 5m 0 .END .
1/sqrt( C1 C2 R1 R2)
A > 1 + R1 / R2 + C1 / C2
SEE ALSO
