// Native first-order RC filter — no UML junction workaround.
source:VIN "V_{in}" at (80, 120) #blue [type=voltage-ac]
resistor:R1 "10 kΩ" at (260, 120) #amber
junction:VOUT "output node" at (440, 120) #cyan
capacitor:C1 "100 nF" at (440, 242) #cyan [orientation=down]
ground:GND "0 V" at (220, 350) #slate
port:OUT "V_{out}" at (680, 120) #emerald

VIN.positive -> R1.in #blue [line]
VIN.negative -> GND.in #slate [ortho]
R1.out -> VOUT.node #amber [line]
VOUT.node -> C1.in #cyan [line]
C1.out -> GND.in #cyan [ortho]
VOUT.node -> OUT.in #emerald [line marker-end=arrow]