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?