v 20100214 2 C 40000 40000 0 0 0 title-B.sym C 47500 45600 1 0 0 cap-mylar.sym { T 47700 46300 5 10 0 0 0 0 1 device=CAPACITOR T 47700 46100 5 10 1 1 0 0 1 refdes=C1 T 47700 46500 5 10 0 0 0 0 1 symversion=0.1 T 48000 46100 5 10 1 1 0 0 1 refdes=100n } N 47500 45800 47500 44800 4 N 48500 43400 48500 49600 4 N 48400 45800 48500 45800 4 N 47200 44800 47500 44800 4 C 51100 45400 1 0 0 cap-mylar.sym { T 51300 46100 5 10 0 0 0 0 1 device=CAPACITOR T 51300 45900 5 10 1 1 0 0 1 refdes=C2 T 51300 46300 5 10 0 0 0 0 1 symversion=0.1 T 51600 45900 5 10 1 1 0 0 1 value=100n } N 51100 45600 51100 44600 4 N 52100 43000 52100 45600 4 N 52000 45600 52100 45600 4 N 50800 44600 51100 44600 4 C 43800 45800 1 0 0 resistor.sym { T 44100 46200 5 10 0 0 0 0 1 device=RESISTOR T 44000 46100 5 10 1 1 0 0 1 refdes=R4 T 43800 45800 5 10 0 1 0 0 1 footprint=R025DOUBLE T 44300 46100 5 10 1 1 0 0 1 value=100k } C 42700 43800 1 90 0 resistor.sym { T 42300 44100 5 10 0 0 90 0 1 device=RESISTOR T 42400 44400 5 10 1 1 180 0 1 refdes=R9 T 42700 43800 5 10 0 1 90 0 1 footprint=R025DOUBLE T 42500 44200 5 10 1 1 180 0 1 value=100k } N 44700 45900 44800 45900 4 N 44800 45900 44800 44800 4 N 43800 45000 43800 45900 4 N 42600 43000 52100 43000 4 N 42600 43000 42600 43800 4 C 47300 44000 1 0 0 gnd.sym C 50800 43900 1 0 0 gnd.sym N 47500 44400 47400 44400 4 N 47400 44400 47400 44300 4 N 51100 44200 50900 44200 4 N 42400 45000 43800 45000 4 C 44800 43600 1 90 0 pot.sym { T 43900 44400 5 10 0 0 90 0 1 device=VARIABLE_RESISTOR T 44500 44400 5 10 1 1 180 0 1 refdes=R5 T 44300 43800 5 10 1 1 0 0 1 value=1M } C 45000 44200 1 0 0 gnd.sym N 44700 44500 45100 44500 4 C 43400 43800 1 90 0 resistor.sym { T 43000 44100 5 10 0 0 90 0 1 device=RESISTOR T 43100 44400 5 10 1 1 180 0 1 refdes=R6 T 43400 43800 5 10 0 1 90 0 1 footprint=R025DOUBLE T 42900 44000 5 10 1 1 0 0 1 value=1M } T 50300 40900 9 20 1 0 0 0 1 State variable filter with 2-scroll chaos. T 54000 40100 9 10 1 0 0 0 1 Tom Schouten C 49900 44500 1 0 0 pot.sym { T 50700 45400 5 10 0 0 0 0 1 device=VARIABLE_RESISTOR T 50000 44800 5 10 1 1 0 0 1 refdes=R2 T 50500 44800 5 10 1 1 0 0 1 value=50k } N 50400 45100 49900 45100 4 C 46300 44700 1 0 0 pot.sym { T 47100 45600 5 10 0 0 0 0 1 device=VARIABLE_RESISTOR T 46400 45000 5 10 1 1 0 0 1 refdes=R1 T 46900 45000 5 10 1 1 0 0 1 value=50k } N 46800 45300 46300 45300 4 N 46300 45300 46300 44800 4 C 45100 44700 1 0 0 resistor.sym { T 45400 45100 5 10 0 0 0 0 1 device=RESISTOR T 45300 45000 5 10 1 1 0 0 1 refdes=R7 T 45100 44700 5 10 0 1 0 0 1 footprint=R025DOUBLE T 45600 45000 5 10 1 1 0 0 1 value=470 } N 46000 44800 46300 44800 4 N 45100 44800 44800 44800 4 C 48700 44500 1 0 0 resistor.sym { T 49000 44900 5 10 0 0 0 0 1 device=RESISTOR T 48900 44800 5 10 1 1 0 0 1 refdes=R8 T 48700 44500 5 10 0 1 0 0 1 footprint=R025DOUBLE T 49200 44800 5 10 1 1 0 0 1 value=470 } N 48500 44600 48700 44600 4 N 49600 44600 49900 44600 4 N 49900 45100 49900 44600 4 C 41500 44900 1 0 0 resistor.sym { T 41800 45300 5 10 0 0 0 0 1 device=RESISTOR T 41700 45200 5 10 1 1 0 0 1 refdes=R3 T 41500 44900 5 10 0 1 0 0 1 footprint=R025DOUBLE T 42000 45200 5 10 1 1 0 0 1 value=10k } N 41500 45000 41200 45000 4 C 40300 44900 1 0 0 terminal.sym { T 40610 45650 5 10 0 0 0 0 1 device=terminal T 40610 45500 5 10 0 0 0 0 1 footprint=CONNECTOR 1 1 T 40650 45050 5 10 1 1 0 6 1 refdes=IN } N 43300 44700 43300 45000 4 C 43800 44400 1 0 0 opa-Q1.sym { T 44000 46700 5 10 0 0 0 0 1 device=DUAL_OPAMP T 44000 45300 5 10 1 1 0 0 1 refdes=U1 T 44000 46500 5 10 0 0 0 0 1 footprint=DIL 14 300 T 44000 46900 5 10 0 0 0 0 1 symversion=0.2 } C 47500 44200 1 0 0 opa-Q3.sym { T 47700 46500 5 10 0 0 0 0 1 device=DUAL_OPAMP T 47700 45100 5 10 1 1 0 0 1 refdes=U1 T 47700 46300 5 10 0 0 0 0 1 footprint=DIL 14 300 T 47700 46700 5 10 0 0 0 0 1 symversion=0.2 } C 51100 44000 1 0 0 opa-Q4.sym { T 51300 46300 5 10 0 0 0 0 1 device=DUAL_OPAMP T 51300 44900 5 10 1 1 0 0 1 refdes=U1 T 51300 46100 5 10 0 0 0 0 1 footprint=DIL 14 300 T 51300 46500 5 10 0 0 0 0 1 symversion=0.2 } N 42600 45000 42600 44700 4 N 43300 43400 48500 43400 4 N 44700 43600 44700 43400 4 N 43800 44600 43800 44100 4 N 43800 44100 44200 44100 4 N 43300 43800 43300 43400 4 T 46500 44500 9 10 1 0 0 0 1 freqA T 50100 44300 9 10 1 0 0 0 1 freqB T 44900 43900 9 10 1 0 0 0 1 res C 48000 49000 1 0 1 opa-Q2.sym { T 47800 51300 5 10 0 0 0 6 1 device=DUAL_OPAMP T 47800 49900 5 10 1 1 0 6 1 refdes=U1 T 47800 51100 5 10 0 0 0 6 1 footprint=DIL 14 300 T 47800 51500 5 10 0 0 0 6 1 symversion=0.2 } C 46900 49300 1 0 1 resistor.sym { T 46600 49700 5 10 0 0 0 6 1 device=RESISTOR T 46700 49600 5 10 1 1 0 6 1 refdes=R10 T 46900 49300 5 10 0 1 0 6 1 footprint=R025DOUBLE T 46300 49600 5 10 1 1 0 6 1 value=10k } C 45800 47900 1 270 1 diode.sym { T 46400 48300 5 10 0 0 90 2 1 device=DIODE T 45800 48000 5 10 1 1 180 2 1 refdes=D1 T 46300 48200 5 10 0 0 90 2 1 footprint=DO-35 } C 46900 48800 1 90 1 diode.sym { T 46300 48400 5 10 0 0 270 2 1 device=DIODE T 46900 48600 5 10 1 1 0 2 1 refdes=D2 T 46400 48500 5 10 0 0 270 2 1 footprint=DO-35 } C 46100 47300 1 0 1 gnd.sym N 46000 47900 46700 47900 4 N 46000 49400 46000 48800 4 N 47000 49400 46900 49400 4 N 46000 47900 46000 47600 4 N 48000 48800 48000 49200 4 N 46000 48800 48000 48800 4 N 48000 49600 48500 49600 4