I'm trying to plot the frequency response of a power supply I've designed. Here is the netlist (made using Spice OPUS): Code (Text): PowerSupply v1 4 5 dc 0 sin(0 34 60) D1 4 2 1N4007 D2 0 5 1N4007 D3 5 2 1N4007 D4 0 4 1N4007 c1 2 0 1000u c2 2 0 100n cout out 0 100n radj adj 0 5k r1 out adj 240 x 2 adj out LM317 .include parts.lib .control set units=degree destroy all tran 0.01ms 100ms plot v(4,5) v(out) vs (time*1000) destroy all [b]ac dec 10 60Hz 7000Hz plot ac1.v(out) vs ac1.frequency[/b] .endc .end The first plot, I'm doing a time domain analysis (this works fine). However, I am having some trouble with varying the frequency of the input. I have bold my attempt at this. But something is definitely wrong here. I get in excess of 6000v when I vary the frequency. When I designed the circuit I was aiming for about 29v (which is what the time domain plot shows). Can some please assist me in doing a frequency response analysis. Thanks.