Application Note 7511

A139M

50 TO 320V DC

 

 

 

 

 

 

 

50H

24V

 

 

 

 

 

 

 

 

3.9k

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TO

 

 

3.3k

 

2N5355

 

 

 

DRIVE

 

750k

 

 

 

47k

 

 

 

 

 

 

 

 

 

 

 

 

 

2.7k

180k

39k

 

 

470pF

 

 

 

 

 

 

0.01

 

 

0.001

DT230F

 

 

 

 

 

 

 

10A

F

 

 

F

 

 

2N5232

 

 

 

 

 

 

 

2k

 

 

2N5306

 

 

 

5F

 

 

 

 

 

 

 

150

20A

390

 

 

 

 

25V

 

 

 

 

 

 

5F

2k

 

C203B

 

 

22

15V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20V

 

470

 

 

22k

 

 

220k

 

 

pF

1k

0.02

 

2.2k

 

 

10k

 

F

 

2 0.2 F

 

 

39

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.001

 

 

 

 

 

 

1

 

H11F3 TO

 

H11AV2 TO PZO SHUTDOWN

 

F

 

 

CONTROL CIRCUIT

 

 

 

 

 

 

 

H11AV2 TO HI-V SHUTDOWN

 

H11F3

 

 

 

 

 

 

 

 

 

 

 

 

 

2m(1” #24 AWG COPPER)

 

 

 

 

POWER

CURRENT

AC

LATCHING

10ms

IGT POWER SWITCHES

SUPPLY

SENSE AND

AMPLIFIER

FAST

RESET

 

 

CHOPPER

 

COMPARATOR

 

 

TO MOTOR

FIGURE 15A. THIS ALL-ENCOMPASSING PROTECTION SYSTEM PROVIDES THREE INDEPENDENT SHUTDOWN FUNCTONS - ONE EACH FOR THE UPPER AND LOWER IGTS AND THE HIGH-VOLTAGE SUPPLY.

CHOPPER DRIVE

 

 

TO PIEZO

 

 

5V

 

 

 

 

 

 

47k

DRIVERS

150

150

 

 

 

 

 

 

 

DT230F

 

 

 

TIMER

(3)

 

 

 

 

 

 

 

555

 

 

 

 

 

1

3

0.002

 

 

0.002

 

 

F

5.1k

5.1k

F

 

 

 

180

 

 

180

 

 

10F

 

2N5232

2N5232

 

 

 

 

 

10V

 

H11F3

 

 

H11F3

 

 

 

 

 

 

150

 

 

 

 

H11AV2

0.005F

 

100

 

 

 

 

 

 

 

 

 

 

ALL OPTOCOUPLERS GO TO PROTECTION CIRCUIT

HIGH-VOLTAGE SHUTDOWN

24V

TO CONTROL

5V

 

2.2k

 

 

16

15

0.005

SG3524

F

 

 

 

10

8

 

1M

 

FIGURE 15B. THIS CIRCUIT PROVIDES CHOPPER DRIVE FOR THE COPPER-WIRE

FIGURE 15C. SHOWS THE HIGH-VOLT-

SENSOR IN FIGURE 15A.

AGE SHUTDOWN CIRCUIT.

©2002 Fairchild Semiconductor Corporation

Application Note 7511 Rev. A1

Page 10
Image 10
Fairchild AN-7511 manual This Circuit Provides Chopper Drive for the COPPER-WIRE

AN-7511 specifications

The Fairchild AN-7511 is a versatile, twin-engine turboprop aircraft designed for a myriad of military applications, including cargo transport, surveillance, and personnel movement. Developed by Fairchild Aircraft in the 1970s, the AN-7511 represents a significant evolution in tactical airlift capabilities, aimed at meeting the diverse needs of the United States Armed Forces and allied nations.

One of the standout features of the AN-7511 is its impressive cargo capacity. The aircraft can carry up to 10 tons of cargo, making it suitable for transporting supplies, equipment, and even troops in various operational scenarios. Its rear ramp design facilitates rapid loading and unloading, which is crucial in military operations where time can be of the essence.

The AN-7511 is powered by two turboprop engines, which provide a combination of efficiency and reliability. These engines offer superior performance at various altitudes and are designed to operate in diverse environmental conditions. The aircraft’s range allows it to execute long-distance missions without the need for frequent refueling, which is vital for sustained operations in remote areas.

In terms of technologies, the AN-7511 features advanced avionics that enhance navigation and situational awareness for the crew. These systems incorporate modern instruments that ensure safe flight operations, even in challenging weather conditions. The cockpit layout is designed for ease of use, enabling pilots to maintain focus on mission objectives.

Another notable characteristic of the AN-7511 is its rugged construction. The airframe is built to endure the rigors of military flights, including rough landings on unpaved airstrips. This durability is complemented by a relatively short takeoff and landing distance, allowing the aircraft to operate in austere environments.

Moreover, the AN-7511 can be equipped with various mission-specific systems, such as surveillance pods or electronic warfare equipment, making it adaptable for different roles. This flexibility extends the operational capabilities of the aircraft, enabling it to fulfill multiple mission types in support of military objectives.

In summary, the Fairchild AN-7511 is a robust and adaptable aircraft that combines advanced technologies with military practicality. Its cargo capacity, range, reliability, and operational flexibility make it a valuable asset for any airlift or tactical operation, ensuring that it remains a critical component of military aviation efforts.