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Home > Power Supplies > DC Power Supplies > Switching Power Supplies

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24V DC 10A 240W Switching Power Supply

$70.08

240W switching power can convert AC power to DC 12V (20A rated current) or 24V (10A rated current). Favorable price and high

SKU: CHN-SMPS-250-24

Free Shipping Worldwide

Delivery date: 6-12 days

Overview
Documents

Features

Universal AC input range selectable by a switch
Protections: short circuit, overload and overvoltage
Forced air cooling by built-in DC fan
LED indicator for power on
100% full load burn-in test
Low cost and high reliability

Specification

Model		CHN-S-250-12	CHN-S-250-24
Output	DC Voltage	12V	24V
	Rated Current	20A	10A
	Current Range	0 ~ 20A	0 ~ 10A
	Rated Power	240W	240W
	Ripple & Noise (Max.)(Note 2)	150mVp-p	150mVp-p
	Voltage Adjust Range	10 ~ 13.2V	20 ~ 26.4V
	Voltage Tolerance (Note 3)	±1.0%	±1.0%
	Line Regulation	±0.5%	±0.5%
	Load Regulation	±0.5%	±0.5%
	Setup, Rise, Holdup Time	200ms, 100ms, 20ms at full load
Input	Voltage Range	90 ~ 132VAC/180V~264VAC (selected by a switch) or 254 ~ 370VDC
	Frequency Range	47~63Hz
	Efficiency (Typ.)	80%	83%
	AC Current (Typ.)	4.9A/115V AC 2.8A/230V AC
	Inrush Current (Typ.)	Cold start: 50A/230V AC
	Leakage Current	<3.5mA/240V AC
Protection	Overload	105~135% rated output power
		Protection type: Constant current limiting, recovers automatically after fault condition is removed.
	Overvoltage	13.8 ~ 16.2V	27.6 ~ 32.4V
		Protection type: Hiccup mode, recovers automatically after fault condition is removed.
Environment	Working Temperature	-10 ~ +50℃
	Working Humidity	20~90% RH non-condensing
	Storage Temperature	-20~+85℃
	Storage Humidity	10~95% RH non-condensing
	Temperature Coefficient	±0.03%/℃ (0~50℃)
	Vibration	10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
Safety & EMC	Safety Standards	UL60950-1 Approved
	Withstand Voltage	I/P-O/P: 1.5KVAC I/P-FG: 1.5KVAC O/P-FG: 0.5KVAC
	Isolation Resistance	I/P-O/P, I/P-FG, O/P-FG: 100M Ohms/500VDC/25℃/70% RH
Others	MTBF	≥271.9K hrs MIN. MIL-HDBK-217F (25℃)
	Dimension	21511550mm (LWH)
	Weight	0.95kg
Note	1. All parameters NOT specially mentioned are measured at 230V AC input, rated load and 25°C of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance includes set up tolerance, line regulation and load regulation.

Dimensions (Unit: mm)

SMPS Power Supply Applications

Power Tools
Electric Saw, Drilling Machine, Ginder, Sand Blast Machine, Puching Machine, Weeding Machine, Air Compressor, etc.
Offices Devices
Computer, Printer, LCD Monitor, Scanning Machine, etc.
Electrics & Household Appliance
TV, VCRS, Radio, Dust Collector, Fan Lamp or LED Strip, Sewing Machine, Microwave Oven, Fridge/Freezr, Coffemarker, etc.
Industrial Equipemnt
Monitoring Equipment, Shipping, Vehicle, Metalhalide Lamp, Solar System, Wind Power Generation, etc.

Tips: Switching power supply vs. linear power supply

Switching power supply (SMPS) depends on breakover of MOS transistors between upper and lower bridges. Current flows in through MOS transistors of upper bridge and then gather electric power at the coil by its storage function. At last, the power supply closes MOS transistors of the upper bridge and opens those of the lower bridge. The coil and capacitor would supply power to external part. Then, switching power supply would close MOS transistors of the lower bridge and reopen the upper bridge to let the power in. The foresaid process would be repeated. MOS transistors need to be opened alternatively, so it is called switching power supply.

Linear power supply is different from switching power supply. It is equipped with no switches, so the upper hose keeps draining off. MOS transistors of some linear power supplies emit lots of heat. Excessive electric power is converted to heat. It can be found conversion efficiency of linear power supply remains very low. When components are stuck in high temperature, their life span will be reduced and their actual effect will be influenced.

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