Specifications for Model XP-650
Input Voltage 120VAC or 240VAC (factory set)
Output Voltage 0-20VDC or 0-40VDC
Output Current 3 Amps @ 0-20VDC
1.5 Amps @ 0-40VDC
Load Regulation Less than .1V (0 to full load)
Line Regulation Less than .1V (105 to 135V)
Ripple and Noise Less than .005V RMS
Current Protection .05 to 3A adjustable current limit
Short Protection .05 to 3A limit automatic reset
Output Impedance .025 ohms
Meter 40 Volts and 3 Amps, 5% full scale accuracy
Specifications for Model XP-750
Input Voltage 120VAC or 240VAC (factory set)
Output Voltage 0-20VDC to 0-40VDC
Output Current 3 Amps @ 0-20VDC
1.5 Amps @ 0-40VDC
Load Regulation Less than .1V (0 to full load)
Line Regulation Less than .1V (105 to 135V)
Ripple and Noise Less than .005V RMS
Current Protection .05 to 3A adjustable current limit
Short Protection .05 to 3A limit automatic reset
Output Impedance .025 ohms
Meters Two LED type meters. The voltmeter accuracy is better than 1/2% +
1 digit.
Resolution is 100mV. The ammeter accuracy is better than 1% +
1 digit.
Resolution is 10mA.
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Safety Precautions
CAUTION: When removing cover or replacing fuse, always disconnect the power cord from the AC
socket. Service repair should be done by qualified personnel who are knowledgeable of electrical haz-
ards.
Certain safety precautions must be observed when this power supply is used with external circuits that
are connected to AC power lines. There is always some danger when working with electrical equipment
or circuits that operate at hazardous voltages. You should thoroughly familiarize yourself with the equip-
ment before working on it. High voltage may appear at unexpected points in defective equipment.
Elenco power supplies are equipped with three wire line cords which ground the chassis to the power
line cord. DO NOT CUT OFF OR DISABLE THE GROUND PLUG.
The power supply secondary circuits are isolated from the 120V primary circuit via the power trans-
former. When working with the other equipment, this may not always be the case. Always be familiar
with the equipment rating. Keep in mind that defective equipment can have dangerous voltages at unex-
pected points.
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