# Zener shunt-regulator screening
# Scope: Shunt regulator at supplied zener voltage; ideal clamp.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

supply = 12 V
zener = 5.1 V
seriesResistance = 330 ohm
load = 10 mA

seriesCurrent := (supply-zener)/seriesResistance [A]
zenerCurrent := seriesCurrent-load [A]
zenerPower := zener*zenerCurrent [W]

check regulation current positive: zenerCurrent > 0 A

scenario alternative: supply = 9.6 V