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Electricity – made understandable Starting to “build the electrical system” A more simple electrical schematic Electricity • 28 volt system • (1) 10 ampere battery – Located under nose baggage compartment floor • (2) 75 amp belt driven alternators – (1) each Alternator Control Units – Regulate voltage, shut down alternator in the event it begins to produce excessive (32+) voltage, parallels the two alternators Routing • Power from battery continuously available to hot battery bus – Grd Clearance – Courtesy lights – Nose baggage compartment light Routing - 2 • Power available from battery through master switch, to the 80 amp circuit breaker on to the tie bus • Tie Bus – 2 Main buss circuit breakers – 1 non-ess circuit breaker – 2 avionics circuit breakers What is a buss? Battery & Hot Batt Buss fuses 2 alternators Avidyne Equipped Mirage Tie Buss panel Main Buss Panels and Non-Ess Buss Avionics Buss 2006 ELECTRICITY • INTERIOR LIGHTS – Overhead dome rheostats – Switch, Panel & Avionics rheostats – Switch • Switch backlighting – Panel • • • • Post lights Stby instruments EL Flap indicator 1997 Mirage Annunciator Panel What should be illuminated prior to engine start 1998 / 1999 Mirage Annunciator Panel Annunciator Panel Avidyne Panel • Avionics rheostat – Stby Nav Head internal lighting – Trim Master Switch – Audio Panel lighted buttons – Txp buttons – Autopilot buttons – Stby Att gyro ON switch • Stby instrument backlighting if aircraft electrical fails • Annunciator Panel Day – Self dimming or bright override • Switch Panel lights – Self dimming • Night dimming – Gear down lights – PFD & MFD bezel button outlines – Speed Brakes • PFD & MFD – Manual dimming by button at top right of unit – TXP display • Own photocell – GNS 430 • Auto-dimming by photocell?