The Bistable Circuit ** Circuit Description ** * op-amp subcircuit +++++ place uA741 op-amp subcircuit here (see Fig. 12.1) +++++ ** Main Circuit ** * power supplies Vcc 4 0 DC +15V Vee 5 0 DC -15V * input triangular waveform Vi 1 0 PWL ( 0,-15V 1s,+15V 2s,-15V ) * positive feedback op-amp circuit Xopamp1 2 1 4 5 3 uA741 R1 2 0 100k R2 2 3 1Meg ** Analysis Requests ** .OPTIONS itl5=0 .TRAN 10ms 2s 0ms 10ms ** Output Requests ** .PLOT TRAN V(1) V(3) .probe .end