Strona wydrukowana z adresu: http://radmor.com.pl/Civil-products/Accessories/Power-Supplies/3777-Power-Supply

3777 Power Supply

3777 power supply

3777 power supply

The 3777 power supply is a modern  mobile device with the good electrical, mechanical and climatic properties. This power supply provides a voltage of 12V with a load current of up to 10A. It offers high efficiency over a wide input voltage range. The main feature of this mobile device is a push-pull converter with the galvanic isolation of the input and output circiut. The power supply is designed for mobile radiotelephones, mainly produced by RADMOR S.A., which can be installed on different types of vehicles using 24V, 48V or 110V car power supplies.

Technical parameters:

Parameter

Unit

Type

3777/1

3777/2

3777/3

Input voltage range

V

16,6 ÷ 44

28,8 ÷ 90

60 ÷ 180

Output voltage

V

13

Output voltage tolerance

%

±4

Max output current

A

10

Output voltage ripple

mVsk

<10 (<30 at T=-25°C)

Efficiency at max power load

%

>75

Radio electrical interference

 

N level (according to PN-69/E-02031)

Operating temp. range

°C

+5 ÷ +40

Humidity resistance

%

95 (at T = +40°C)

Weight

kg

~3

Dimensions

mm

190 x 175 x 60

This power supply is designed to work constantly with a current alternating from 10A to 2A in a time ratio of 1:5. At the maximum current (10A) it has a disposable load of up to 15 minutes.

Types of protection:

  • over-current/output short circuit protection; the output current is limited and when an overload occurs, even for a few seconds, the power supply stops working;
  • over-voltage protection; the maximum input voltage is limited and when an overload occurs the power supply stops working;
  • output over-voltage protection; the maximum output voltage is limited to 16V; when the output voltage exceeds the reference, caused by regulation loop damage, then the power supply stops working; 
  • thermal protection; the power supply is automatically disabled when the temperature inside the casing exceeds the permisssible limit of ~80°C until the temperature decreases sufficiency.