key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press [On/O
ff] to start or close mode.
选项说明:
Option description
Option content
Option description
LED Vo
:
0---Vmax
LED Stable working voltage of constant current source
carrying LED lamp
LED Io
:
0---Imax
LED Constant current source output current
LED Coeff
:
0.01—1
The ratio of the voltage on the Rd to the total voltage in
the loop.
The above parameters can be used as follows: (1) (2) The conduction voltage and the
impedance of the LED can be obtained by two formulas. Vf is defined as the diode conduction
voltage and Rd as the Led impedance.
Rd = (Vo / Io) * Coeff (1)
Vf = Vo * (1 - Coeff) (2)
Fig. 2.9 LED test interface
2.10 Short circuit test operation
The load can simulate a short-circuit circuit at the input end. Under short-circuit test, the
actual value of the load short circuit depends on the maximum output of the power supply.
Operation description
:
1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press [On/O
ff] to start or close mode.
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