TM 5-3805-280-24-1
System Diagrams
Identification Letter
Type
Examples
A
System, subassembly, parts group
Control units, trigger boxes, two-way radios, logic module, FNR
logic module
B
Transducer for conversion of non-electrical
Speed sensors, pressure sensors, pressure switches horns,
variables to electrical and vice versa
sensors, pickups, limit-value sensors, pulse generators,
loudspeakers, inductive pickups, probes, air-flow sensors,
oil-pressure switches, temperature sensors, ignition-voltage pickups
C
Condenser, capacitor
Condensers and capacitors, general
D
Binary device, memory
Digital devices, integrated circuits, pulse counters, magnetic tape
recorders
E
Various devices and equipment
Heating devices, air conditioners, light, headlights, spark plugs,
ignition distributors
F
Protection device
Release mechanisms, polarity protection devices, fuses, current
protection circuits
G
Power supply, generator
Batteries, generators, alternators, charging units
H
Monitor, alarm, signalling device
Audible alarms, indicator lights, turn-signal lights, brake lights,
9015
alarms, warning lights, buzzers
10
K
3
warning flashers
L
Inductor
Choke coils, coils, windings
M
Motor
Blower motors, fan motors, starter motors
N
Regulator, amplifier
Regulators (electronic or electromechanical), voltage stabilizers
P
Measuring instrument
Ammeter, diagnostic connectors, tachometers, fuel gauge, pressure
gauges, measuring points, test points, speedometers
R
Resistor
Flame glow plugs, sheathed-element flame glow plugs, glow plugs,
heating resistors, NTC resistors, PTC resistors, potentiometers,
regulating resistors
S
Switch
Switches and pushbuttons, general key switch, light switch, horn
switch, flasher switch
T
Ignition coil, ignition transformer
U
Modulator, converter
DC transformers
V
Semiconductor, electron tubes
Transistors, diodes, electron tubes, rectifiers, semiconductors,
thyristors, zener diodes
W
Transmission path, conductor, antenna
Antennas, shielding components, shielded conductors, cable
harnesses, conductors, ground conductors
X
Terminal, plug, plug and socket connection
Terminal studs, electrical connections, connectors electrical line
couplers, line connectors, sockets, plugs, terminals, plug-and-socket
connections
Y
Electrically actuated mechanical device
Permanent magnets, (solenoid-operated) injection valves,
electromagnetic clutches and brakes, air valves, fuel pumps,
solenoids, switching valves, start valves, locking systems
Z
Electrical filter
Interference suppression filters
TX,10,111507 1922AUG962/2
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