* OG EMI reference — DC-DC 500kHz harmonic emission
* Narwhal v0.1 conducted emissions check
* Gate: G-NGSPICE-EMI
* Standard: MIL-STD-461G CE101/CE102; IEC 61000-6-3
* Observer: acoustic modem input (Develogic HPPT or equivalent), 50 Ohm
*
* EXPORT CONTROLLED — ITAR USML Category XX
*
V1 in 0 PULSE(0 5 0 1n 1n 0.5u 2u)
R_dcdc in out 100
L1 out mid 10u
C1 mid 0 100n
* Observer at acoustic modem input (mid = modem-input node; R_obs is a shunt
* load in parallel with C1 at node "mid" -- a standard LC-lowpass-into-
* resistive-load stage, NOT a competing/fighting element: C1 and R_obs both
* return to node 0 (ground), giving node "mid" a well-defined return path).
R_obs mid 0 50
.tran 10n 20u
.print TRAN V(out) V(mid)
.control
run
wrdata ngspice_vout_wrdata.txt v(mid) v(out)
.endc
.end