True Blue Power
®
14
Manual Number 9017680
a division of Mid-Continent Instrument Co., Inc.
Revision G, July 17, 2019
SECTION 4
OPERATION
4.1
ELECTRICAL PERFORMANCE
The TI1200 Series Static Inverter converts a direct current (DC) voltage input to a regulated, pure sine
wave alternating current (VAC) output. Different models provide for outputs of 115 VAC 60 or 400 Hz, and
230 VAC 50 Hz. The unit is capable of providing 1200 watts to power a variety of aircraft accessories
including laptops, personal electronics, onboard systems, and many others. For aircraft or helicopters
where less electrical system current is available, a 230VAC 600 VA model of the TI1200 is available.
(See Table 1.2 for tolerance ranges)
The TI1200 series is designed as a two-stage, solid-state switch-mode power supply. The power
transformation utilizes a first-stage full-bridge methodology followed by an H-bridge AC forming second
stage. The primary stage utilizes ‘current-mode’ control providing instantaneous load protection as an
advantage over legacy designs that incorporate ‘voltage-mode’ controllers. The alternating current is
frequency controlled using a crystal oscillator reference.
Figure 4.1
Output Power Performance vs Temperature
Figure 4.2
Output Power Performance vs Input Voltage
0
200
400
600
800
1000
1200
1400
‐55
‐5
45
Ma
ximun Output
P
ow
er
(W
at
ts)
Temperature (
o
C)
0
200
400
600
800
1000
1200
1400
20
25
30
35
Ma
ximum Output
P
ow
er
(W
at
ts)
Input Voltage (Volts DC)
