PPH-1503D High Precision Dual Channel Output DC Power Supply

Key Features

Dual independent output channels (15V/3A each)
High precision with low ripple and noise
Constant voltage and constant current modes
3-digit digital LED displays for voltage and current
Overvoltage, overcurrent, and short-circuit protection
Compact and durable metal chassis
Ideal for labs, electronics repair, and education

The PPH-1503D High Precision Dual Channel Output DC Power Supply is a robust, laboratory-grade power source designed to meet the demanding requirements of engineers, technicians, educators, and hobbyists. It features two fully isolated and independently controlled output channels, each capable of supplying up to 15V and 3A, with precise voltage and current adjustment using high-resolution 3-digit digital displays (typically ±0.5% accuracy). Its linear regulation design ensures ultra-low ripple and noise (typically less than 1mVrms), making it ideal for sensitive analog and digital circuitry. The unit supports constant voltage (CV) and constant current (CC) modes, with automatic crossover, allowing seamless operation for varying load conditions. Enhanced safety features include current limiting, thermal overload protection, and short-circuit protection, ensuring secure operation for both the power supply and connected devices. The compact and rugged metal chassis with built-in cooling fan provides long-term reliability, while the intuitive front panel layout—featuring rotary knobs, push buttons, and a dual digital LED display—allows for quick, accurate adjustments and status monitoring. Designed for versatility, the PPH-1503D is suitable for use in electronics testing, circuit development, battery charging, and educational training labs.

Specifications

Model	PPH-1503	PPH-1503D		PPH-1506D		PPH-1510D
OUTPUT RATING
Number of output channel	1	2		2		2
Channel No.	Ch1	Ch1	Ch2	Ch1	Ch2	Ch1	Ch2
Power	45W	45W	18W	45W	36W	45W	36W
Voltage	0 ~ 15V or 0 ~ 9V	0 ~ 15V or 0 ~ 9V	0 ~ 12V	0 ~ 15V or 0 ~ 9V	0 ~ 12V	0 ~ 15V or 0 ~ 9V	0 ~ 12V
Current	0 ~ 3A or 0 ~ 5A	0 ~ 3A or 0 ~ 5A	0 ~ 1.5A	0 ~ 3A or 0 ~ 5A	0~ 3.0A	0 ~ 3A or 0 ~ 5A; Rear: 0~10A(under 0~ 4.5V)	0~ 3.0A
Output Voltage Rising Time	0.15ms (10% ~ 90%)	0.20ms (10% ~ 90%)		0.20ms (10% ~ 90%)		0.20ms (10% ~ 90%)
Output Voltage Falling Time	0.65ms (90% ~ 10%)	0.30ms (90% ~ 10%)		0.30ms (90% ~ 10%)		0.30ms (90% ~ 10%)
STABILITY
Voltage	0.01%+0.5mV	0.01%+3.0mV		0.01%+3.0mV		0.01%+3.0mV
Current	0.01%+50uA	NA		NA		NA
REGULATION (CV)
Load	0.01%+2mV	0.01%+2mV		0.01%+2mV		0.01%+2mV
Line	0.5mV	0.5mV		0.5mV		0.5mV
REGULATION (CC)
Load	0.01%+1mA	0.01%+1mA		0.01%+1mA		0.01%+1mA
Line	0.5mA	0.5mA		0.5mA		0.5mA
RIPPLE & NOISE (20Hz ~ 20MHz)
CV p-p	8mV	≦5A:8mVp-p(20Hz~ 20MHz)		≦5A:8mVp-p(20Hz~ 20MHz)		≦5A:8mVp-p(20Hz~ 20MHz) ＞5A: 12mVp-p(20Hz~20MHz)
CV rms	1mV	3mV(0~1MHz)		3mV(0~1MHz)		3mV(0~1MHz)
CC rms	NA	NA	NA	NA	NA	NA	NA
PROGRAMMING ACCURACY
Voltage	0.05%+10mV	0.05%+10mV		0.05%+10mV		0.05%+10mV
Current (CH1: 5A,10A/CH2:1.5A,3A)	0.16%+5mA	0.16%+5mA(5A/1.5A)		0.16%+5mA(5A/3A)		0.16%+5mA(5A/3A)
Current (500mA)	NA	0.16%+0.5mA	NA	0.16%+0.5mA	NA	0.16%+0.5mA	NA
Current (5mA)		0.16%+5uA		0.16%+5uA		0.16%+5uA
READBACK ACCURACY
Voltage	0.05%+3mV	0.05%+3mV		0.05%+3mV		0.05%+3mV
Current (CH1: 5A,10A/CH2:1.5A,3A)	0.2%+400uA(5A)	0.2%+400uA(5A range)	0.2%+400uA	0.2%+400uA(5A range)	0.2%+400uA	0.2%+400uA(5A range)	0.2%+400uA
Current (500mA)	NA	0.2%+100uA(500mA range)	NA	0.2%+100uA(500mA range)	NA	0.2%+100uA(500mA range)	NA
Current (5mA)	0.2%+1uA	0.2%+1uA(5mA range)	0.2%+1uA	0.2%+1uA(5mA range)	0.2%+1uA	0.2%+1uA(5mA range)	0.2%+1uA
RESPONSE TIME
Transient Response Time (Response to 1000% Load Chang)	< 40uS within 100mV < 80uS within 20mV	< 40uS (within 100mV, Rear) < 50uS (within 100mV, Front) < 80uS (within 20mV)		< 40uS (within 100mV, Rear) < 50uS (within 100mV, Front) < 80uS (within 20mV)		< 40uS (within 100mV, Rear) < 50uS (within 100mV, Front) < 80uS (within 20mV)

PROGRAMMING RESOLUTION
Voltage	2.5mV	2.5mV		2.5mV		2.5mV
Current	1.25mA	1.25mA( 5A range)	1.25mA	1.25mA( 5A range)	1.25mA	1.25mA( 5A range)	1.25mA
Current	NA	0.125mA(500mA range)	NA	0.125mA(500mA range)	NA	0.125mA(500mA range)	NA
Current	NA	1.25uA(5mA range)	NA	1.25uA(5mA range)	NA	1.25uA(5mA range)	NA
READBACK RESOLUTION
Voltage	1mV	1mV		1mV		1mV
Current	0.1mA( 5A Range)	0.1mA( 5A Range)	0.1mA(1.5A Range)	0.1mA( 5A Range)	0.1mA( 3A Range)	0.1mA( 5A Range)	0.1mA( 3ARange)
Current	NA	0.01mA ( 500mA Range)	NA	0.01mA ( 500mA Range)	NA	0.01mA ( 500mA Range)	NA
Current	0.1uA( 5mA Range)	0.1uA( 5mA Range)	0.1uA( 5mA Range)	0.1uA( 5mA Range)	0.1uA( 5mA Range)	0.1uA( 5mA Range)	0.1uA( 5mA Range)
PROTECTION FUNCTION
OVP Accuracy	50mV	CH1: 0.8V	CH2:50mV	CH1: 0.8V	CH2:50mV	CH1: 0.8V	CH2:50mV
OVP Resolution	10mV	10mV	10mV	10mV	10mV	10mV	10mV
DVM
DC Readback Accuracy ( 23℃± 5℃)	0.05%+3mV	NA	0.05%+3mV	NA	0.05%+3mV	NA	0.05%+3mV
Readbck Resolution	1mV		1mV		1mV		1mV
Input Voltage range	0 ~ 20VDC		0 ~ 20VDC		0 ~ 20VDC		0 ~ 20VDC
Maximum Input Voltage	NA		-3V, +22V		-3V, +22V		-3V, +22V
Input Resistance and Capacitance	100000MΩ		20MΩ		20MΩ		20MΩ
Programmable output resistance
Range	NA	0.001Ω to 1.000 Ω	NA	0.001Ω to 1.000 Ω	NA	0.001Ω to 1.000 Ω	NA
Programming accuracy		0.5% + 10 mΩ		0.5% + 10 mΩ		0.5% + 10 mΩ
Resolution		1mΩ		1mΩ		1mΩ
PULSE CURRENT MEASUREMENT
TRIGGER LEVEL	5mA ~ 5A, 5mA/step	5mA ~ 5A, 5mA/step	5mA ~ 1.5A, 5mA/step	5mA ~ 5A, 5mA/step	5mA ~ 3A, 5mA/step	5mA ~ 5A, 5mA/step	5mA ~ 3A, 5mA/step
HIGH TIME/LOW TIME/AVERAGE TIME	33.3us to 833ms, 33.3us/step	33.3us to 833ms, 33.3us/step		33.3us to 833ms, 33.3us/step		33.3us to 833ms, 33.3us/step
TRIGGER DELAY	0 ~ 100ms,10us/steps	0 ~ 100ms,10us/steps		0 ~ 100ms,10us/steps		0 ~ 100ms,10us/steps
AVERAGE READINGS	1 ~ 100	1 ~ 100		1 ~ 100		1 ~ 100
LONG INTEGRATION PULSE TIMEOUT	1S ~ 63S	1S ~ 63S		1S ~ 63S		1S ~ 63S
LONG INTEGRATION MEASUREMENT TIME	850ms(60Hz)/840ms(50Hz) ~ 60s,or AUTO time 16.7ms/steps(60Hz), 20ms/steps(50Hz)	850ms(60Hz)/840ms(50Hz) ~ 60s,or AUTO time 16.7ms/steps(60Hz), 20ms/steps(50Hz)		850ms(60Hz)/840ms(50Hz) ~ 60s,or AUTO time 16.7ms/steps(60Hz), 20ms/steps(50Hz)		850ms(60Hz)/840ms(50Hz) ~ 60s,or AUTO time 16.7ms/steps(60Hz), 20ms/steps(50Hz)
LONG INTEGRATION TRIGGER MODE	Rising, Falling, Neither	Rising, Falling, Neither		Rising, Falling, Neither		Rising, Falling, Neither
OTHERS
Output Terminal	Front / Rear Panel	Front / Rear Panel	Rear Panel	Front / Rear Panel	Rear Panel	Front / Rear Panel	Rear Panel
DVM Input	Front / Rear Panel	NA	Front Panel	NA	Front Panel	NA	Front Panel
RELAY CONTROL CONNECTOR	150mA/15V ，5Voutput, 100mA	150mA/15V ，5Voutput, 100mA		150mA/15V ，5Voutput, 100mA		150mA/15V ，5Voutput, 100mA
Operation temperature	0 ~ 40°C	0 ~ 40°C		0 ~ 40°C		0 ~ 40°C
Operation Humidity	≤ 80%	≤ 80%		≤ 80%		≤ 80%
Storage Temperature	-20˚ C ~ 70˚ C	-20˚ C ~ 70˚ C		-20˚ C ~ 70˚ C		-20˚ C ~ 70˚ C
Storage Humidity	< 80%	< 80%		< 80%		< 80%

PC REMOTE INTERFACES
(Standard)	GPIB / USB / LAN	GPIB / USB / LAN		GPIB / USB / LAN		GPIB / USB / LAN
CURRENT SINK CAPACITY
Sink Current Rating	2A(Vout≦ 5V);2A-0.1*(Vout-5)(Vout>5V)	CH1：0~4V: 3.5A 4~15V: 3.5A-(0.25A/V)*(Vset-4V)	CH2: 0~ 5V: 2A 5~12V: 2A-(0.1A/V)*(Vset-5V)	CH1：0~4V: 3.5A 4~15V: 3.5A-(0.25A/V)*(Vset-4V)	CH2: 0~ 5V: 3A 5~12V: 3A-(0.25A/V)*(Vset-5V)	CH1：0~4V: 3.5A 4~15V: 3.5A-(0.25A/V)*(Vset-4V)	CH2: 0~ 5V: 3A 5~12V: 3A-(0.25A/V)*(Vset-5V)
Memory
Save / Recall	5 Sets	5 Sets		5 Sets		5 Sets
Power
Input Power	90-264VAC ; 50/60Hz	90-264VAC ; 50/60Hz		90-264VAC ; 50/60Hz		90-264VAC ; 50/60Hz
POWER CONSUMPTION	150VA	160W		160W		160W
DIMENSIONS & WEIGHT
Dimensions	222(W) x 86(H) x 363(D) mm	222(W) x 86(H) x 363(D) mm		222(W) x 86(H) x 363(D) mm		222(W) x 86(H) x 363(D) mm
Weight	Approx 4.2Kg	Approx 4.5Kg		Approx 4.5Kg		Approx 4.5Kg
Product specifications are subject to change without notice. PLC=PowerLineCycle, 1PLC = 7ms for 60Hz operation, 20ms for 50Hz operation; Display OFF, Speed includes measurement and binary data transfer out of GPIB; PLC=1; STABILITY: Following 15 minute warm-up, the change in output over 8 hours under ambient temperature, constant load, and line operating conditions; The ground ring of the probe is pressed directly against the output ground of the power supply and the tip is in contact with the output voltage pin. Auto detected at power-up;

Accessories

CD (User manual x1), Quick Start manual x1, Test lead GTL-207A x1, GTL-203A x1, GTL-204A x1, Power cord (Region dependent)

Optional Accessories

GTL-246 USB cable, Type A – Type B

PPH-1503D High Precision Dual Channel Output DC Power Supply