Dual DC power Megtron instrument I. Overview MCH-300 dual power supply series, power supply is an adjustable multi-function high stability DC power supply. It can be continuous full load output, the output voltage and current in the standard range continuously adjustable. DC power supply than is generally difficult to achieve the high stability, strong reliability and durability of power supply, scientific research departments, universities and enterprises that require high stability of the DC power supply ideal . Second, the specification Model Voltage 0 ~ 30V output current is fixed 5V / 2A Dual Output 0 ~ 2A 0 ~ 3A 0 ~ 5A MCH-302D-II ● ● ● ● MCH-303D-II ● ● ● ● MCH-305D-II ● ● ● ● Input voltage: 110V / 220VAC ± 10% 60 / 50Hz (when ordering) Rated output power: 60W X 2 = 120w (2A) 90W X 2 = 180w (3A) 150W X 2 = 300w (5A) Operating Environment : Temperature: 0 ℃ -40 ℃ Humidity: ≤90% RH preservation of the environment: Temperature: 20 ℃ -80 ℃ Humidity: ≤80% RH 2 Third, the technical indicators Model MCH-302D-II MCH-303D-II MCH-305D- II Variable Output: Output voltage: 0 ~ 30V continuously adjustable output current from 0 to nominal value continuously adjustable Source effect: ≤lx 10-4 + 3mV load effect: ≤1 x 10-4 + 3mV Ripple Noise: ≤ 1mV (rms) figures show four groups three display error ≤ 0.5% + ld fixed output voltage of 5V 2A output current output source effect: ≤5mV Load effect: ≤15mV ripple noise: ≤2mV (RMS) Other: Enter Power: 110V / 220V ± 10% 60 / 50Hz (when ordering) Dimensions 260 x 165 x 300 (mm) Weight kg about 7.2kg about 8.6kg to about 11kg 3 IV Panel and Operating Instructions 4.1 Panel: (1) switch. (2) Independent / serial / parallel control keys. When you select the line mode, two-way power are connected in series. A voltage channel by channel B control. Then you can get one pair of opposite polarity. Positive and negative connection channel B and channel A can get double the voltage output. When you select the parallel mode, and two-way power is connected, then at any one output terminal 4 you can get double the current. (3) three voltage / current value is displayed (4) three voltage / current value is displayed. (5) C.C constant lamp. (6) C.V constant pressure indicator. NOTE: When the load current (Calculated according to Ohm's law) is below a preset current values, CV lights, then the power supply is operating in constant voltage mode. Conversely, CC lights, then the power supply is operating in constant current mode, is defined by the preset current value of the power load. (7) Voltage coarse / fine adjustment. (8) Voltage coarse / fine adjustment. Note: If the series or parallel state, Knob Channel A is not functioning. (9) The current coarse / fine. (10) The current coarse / fine. (11) output 1, fixed 5V / 2A output. (12) output 2, from (7) and (9) keys. (13) the output of 3, from (8) and (10) keys. 5 4.2: 1 port connection: the output terminal 12 and the output terminal 13 is in the floating state. Fixed output and the negative terminal 11 has an internal ground. 2. The voltage setting: Adjust the voltage knob to get the required voltage. 3. Current settings: adjust the voltage control counterclockwise rotation, get a smaller voltage value. Shorted output terminal, adjust the current knob to set the desired current value. 4. tandem: through the button 2 Select line mode (while bouncing on both sides independently, left press line mode, the left and right while pressing in parallel mode) "+" terminal and the output terminal 12 is the output terminal 13 The "-" terminal as an output. Then the output voltage of the power supply voltage is the sum of two paths. 5. in parallel: parallel mode selection button 2 by using any of the way the power is output, the current case is the sum of the output currents of the two-way power. Fifth, accessories and maintenance 5.1 Packing List Power line; an instruction manual; a fuse; (built-in socket at) manufacturers long-term supply of various DC power supply, oscilloscope, spectrum analyzer, Bridge, IC tester Shenzhen, a US Instruments Ltd. | Megtron instrument dual DC power