Koocu 1502A DC power supply for Mobile phone

Specifications

First, an overview

  Communication adjustable DC power supply is designed specifically for the use of laboratories, schools, factories, production lines and Engineering Department. Its output voltage is continuously adjustable between 0 to nominal value; output load current is also continuously adjustable between 0 to nominal value. Have very good stability and ripple factor of the power and overload protection circuit, not only for the power supply can be used for a stabilized power supply.

Second, the use

2-1, Note:

(1) AC input

    AC input for AC 220V ± 15% 50HZ (if it is 110V ± 15% 60HZ in the back of the chassis will be marked).

(2) Insulation

    Do not use where the ambient temperature exceeds 40 ° C, the radiator in the rear of the instrument, should be sufficient space to facilitate cooling. Full load, prolonged use of high heat sink temperature, please do not touch the radiator.

(3) The output voltage overshoot limit.

    When the switching power supply, the output voltage can not afford the preset value. (If necessary with an accuracy of 0.1% multimeter to measure, such as overloading the necessary protective measures should be used to prevent static voltage is too high for any loss plant is not responsible for).

2-2, the current limit is set

(1) determine the maximum safe current of the instrument needs to be powered.

(2) a short route to temporarily power supply (+) and (-) terminal short circuit.

(3) rotating voltage control knob VOLTAGE refer to alarm connections, until the CC to make comments on the lights.

(4) CURRENT adjust the current knob to the desired current value.

(5) current (max) set is completed, then do not change the current knob.

(6) removing the short line to enter the working state.

Communications Dedicated CC indicator, then the voltage control knob VOLTAGE refer to alarm connections clockwise raised to about 1/3.

2-3, constant voltage / constant current characteristic:

        The operating characteristics of the power is called automatically converted to constant voltage / constant current type, which changes with the load between constant pressure and sexual flow state of continuous change, the intersection between the constant voltage and constant current is called the conversion point.

        For example, if the load power at constant voltage, the output voltage stability. As the load increases, the output voltage will remain stable until it reaches the preset current limit. To the current limit value, the output current to remain stable, constant voltage and constant current input to change the instructions by the lights on the front panel CC.

        Similar to the automatic conversion from constant current to constant voltage with the reduction in load. Constant pressure when the CV light, constant current when the CC light.

 communication type with constant voltage / constant current characteristic, there is no increase of CC, CV indicator function.

2-4, the method of operation

(1) power switch to "OFF" position.

(2) ensure that the input supply voltage is correct.

(3) connected to the power supply.

(4) the power switch to "ON" position.

(5) to adjust the "VOLTAGE" and "CURRENT" knob to the desired output voltage and current values. (Without limiting functionality may be the current knob CURRENT clockwise to maximum)

(6) to connect an external load to the "+", "-" output terminal.

(7) When used in a higher place, the output terminals "+" or "-" terminal must have a reliable connection to the GND terminal, thus reducing the output ripple voltage.

Third, parameter specifications

3-1, rated operating conditions:

        Supply voltage AC 220V ± 15% 50/60HZ

(Depending on working conditions in the AC 110V ± 15% 50/60HZ)

        Working conditions

        Temperature: -10 °C ~ +40 °C

        Relative humidity :45-75% RH

        Storage conditions

        Temperature: -20 ° C to +80 ° C

        Relative Humidity: ≤ 80%

3-2, the technical performance

(1) The power stability of ≤ 0.01% +2 Mv

(2) load stability of ≤ 0.01% +2 Mv

(3) recovery time to ≤ 100uS9 (5HZ-1MHZ) (maximum current ≤ 3A)

(4) ripple noise the ≤ 0.5MVRMS (and 5HZ - 1MHZ) (and the maximum current of 3A)

(5) temperature coefficient of 2 × 10-4 +0.5 Mv / ° C

(6) limiting protection current nominal value arbitrarily selected

(7) limit and short circuit protection (allows a load of long-term short circuit)

3-3, the packing number of

     12 / box

Fifth, after-sales service

      Distribution points users to buy, be sure to fill in the warranty card, ensure the legitimate rights and interests. 1 year warranty free of charge since the purchase from where, in normal use regulations within the power failure are among the list of free maintenance, but artificially damaged or accidentally serviceable but will be charged the appropriate fee. The factory is willing to provide detailed, Thank you for your cooperation.