~ Mini Programmable DC Power Supply ~

mPP Series : mPP Series :

Precision Protection PC-Remote Power Scope

Our Feature

Dimension ! Only 30% volume of traditional power supply !

By turning the rotary encoder, we can easily get fine-turned

voltage level, and clearly find out the critical voltage of the component and the circuit.

When the DUT is tested from constant voltage (C.V) from

constant current (C.C), the rotary encoder automatically changes to fine tune of output current.

Provide the constant power output from 1.5V to 5V.

Our Feature

Store memory: 100 sets store memory for setting OCP, OVP, V.Set Limit, voltage and current.

V.Set Limit function: Offer the limit of the maximum voltage setting to protect user's low-voltage DUT.

Keypad/Knob Lock function: Able to use lock function to keep the voltage and current setting and will keep the setting even when the mPP power on/off again.

Reliability TestUse Power Scope to record and display the curves of current consumption & voltage

variation. It can track and record the curves the load variation for a long time, displaying the curves of current consumption and voltage variation for the purpose of analysis.

․ With the programmable function, the software provides the variation of output voltage and current for the observation of the current consumption at each voltage level.

․ Under the condition of long time DUT power fluctuation, it allows the user to judge the stability of the components, and to find out the potential trouble of the product in real time.

Reliability Test Programmable output

(Time working and voltage variation attack)

Programmable function. Besides to set the output voltage and maintaining time, we also could set the maximum/minimum current of the load.

․ In accord with the Power Scope, we could record the curve of current consumption & the voltage variation for analysis.

․ We could accord the attrition from the power to determine the stability & the normal of the product.

The difference of C.C & O.C.P

The general power supply device has only two working mode -C.V./C.C., when entering into C.C. mode, the power supply becomes the constant current power source to provide the DUT with constant current, which eventually the DUT is burn out.

When IL under C.C value, EL will maintain with the constant C.V. value, and this moment, the power supply is under C.V mode.

When IL increase to C.C value, EL will start to decrease until IL maintain with the constant C.C value, and this moment, the power supply is under C.C mode. (And the power supply is still provide the current to the load.)

Relatively, the O.C.P function is easy and suitable for the digital circuit. User could set C.V and C.C first, and then use the function key to start the O.C.P function and set the protection current value. (It’s in need to be under C.C value.) If IL over O.V.P setting, the power supply will shut off the current output and enter into OUT OFF mode, and warning is given.

O.V.P

When the DUT is for resistance load (as rechargeable Battery

or sensor), user need to set the constant current first, and set the

working voltage, connect the output to the DUT.

․ In the beginning, the resistance of the DUT is low, IL is fixed at

C.C value, and EL will under less than C.V.

․ At this moment, user could use the function key to start O.V.P and

key in the voltage value. (It's in need to less than C.V)

․ As the resistance increase gradually, and IL with no change, EL

will also increase.

․ When EL increase to O.V.P value, the power supply will shut off

the current output and enter into OUT OFF mode, and warning is

given.

Series/Parallel connection of power output

Series connection output #1 (for higher output voltage)

You can get higher voltage by series connection of two or more outputs, and please take notice : The voltage of series connection is the accumulative value of each voltage, the current is the minimum value of all them. ex : E1=30V/I1=3A ; E2=30V/I2=2A -> EL =60V(30+30V), If IL more than 2A will cause E2 be decreased, and EL will decrease to close to E1(30V)

Series connection output #2 (for positive/negative output)

By series connection of two power outputs under positive/negative and common mode, you can get positive and negative outputs. The voltage of positive output is E1 ; and the voltage of negative output is E2.

Parallel connection output (for higher current)

You can get higher current by parallel connection of two or more power outputs, and please take notice : All of the output voltage of parallel connection must be the same, and the current will be

accumulative. ex : E1=5V/I1=3A ; E2=5.5V/I2=2A --> EL=5.5V, when the load increase to 2A, if E2 change from C.V to C.C, E2 will be decreased to 5V(E1), and then IL will be : I1+I2 =3A+2A=5A

It’s your best choice !