Switching model LED
Power Supply
12v 2a
DC input filter circuit principle:
?? input filter circuit: C1, L1, C2 composed of double ??-type filter network is mainly on the input power of electromagnetic noise and clutter signal to prevent interference to the power supply, but also to prevent the power itself generated high-frequency clutter on the grid interference. C3, C4 for the safety capacitor, L2, L3 for the differential mode inductance.
?? R1, R2, R3, Z1, C6, Q1, Z2, R4, R5, Q2, RT1, C7 constitute the surge circuit. At the moment of starting, d
ue to the existence of C6 Q2 is not conducting, the current circuit composed of RT1. When the voltage on C6 is charged to the Z1 regulator, Q2 turns on. If the C8 leakage or post-stage circuit short-circuit phenomenon, the instantaneous current in the RT1 generated on the voltage drop increases, Q1 conduction makes Q2 no gate voltage does not turn on, RT1 will be burned in a very short time to Protect the post-stage circuit.
For this item, followed are the Features:
1. Universal AC input/Full range
2. Protection: Short circult/Overload/Over Voltage
3. Cooling by free air convection
4. 100% full load burn-in test with 3-5 hours
5. No load power consumption < 0.5W 6. High efficiency, long life and high reliability 7. One year warranty Details: Model S-20-5V S-24-12V S-24-24V DC Output Voltage 5V 12V 24V Iutput Voltage Error ?? 2% ?? 1% ?? 1% Rated Output Current 3.8A 2A 1A Output Current Range 0-3.8A 0-2A 0-1A Tripple and Noise 150mVp-p 250mVp-p 350mVp-p Iniet Stability ?? 0.5% ?? 0.5% ?? 0.5% Tolerance Voltage ?? 1% ?? 0.5% ?? 0.5% DC Output Power 20W 24W 24w Efficiency 76% 78% 80% Adjustable Range for DC Voltage 4.5-5.6V 10-13.2V 20-26.4V AC Input Voltage Range 90~132VAC/180~264VAC selected by switch 47~63Hz; 240~370VDC Input Current 2A/115V 1.5/230V AC Inrush Current Cold-Start Current: 25A/115V, 50A/230V Leakage Current <3.5mA/240VAC Overload Protection 105%~150% Type: Cut Output, Reset: Auto Recovery Over Voltage Protection Yes High Temperature Protection Yes Temperature Coefficient ?? 0.03% /??C (0~50??C) Start, Rise, Hold time 200ms, 100ms, 20ms Vibration 10~500Hz, 2G 10min,/1cycle, a total of 60 minutes, Each axes Withstand Voltage Between Input and Output: 1.5KVAC, Input and Shell: 1.5KVAC, Output and Shell: 0.5KVAC Isolation Resistance Input and Output Intermal: Input and Enclosule, Output and Enclosure: 500VDC/100M Ohms Working Temperature and Humidity `-10??C~+60??C (Refer to Output Dreating Cutive), 20%~90%RH Storage Temperature and Humidity `20??C~+85??C, 10%~95%RH Overall Dimension 8.7*5.8*3.2cm Weight 102g EMC Standards Meet FCC Part 15J Conduction class B Please Note: 1. The testing condition for the parameter above is: 230VAC input, rated load, 25??C 70%Rh, Humidity. 2. Error, include the setting error, line stability and load stability. 3. Wave test: adopting "A12" double wire for 20MHZ, and 0.1uF capacitor short-circuit for interrupting. 4. Inlet Voltage Stability test: when is over load, the lowest voltage of inter is representative to the highest voltage. 5. Load stability test: the load is from 0% to 100%, others 60%. 6. C3.4 must be knocked down. Applications: ??Office , Artwork, Display items lighting; ??Household lighting; ??Commercial lighting, such as Flood light, Down light, Flexible strip light, Wall washer, etc; ??Hotel, Restaurant lighting; ??Other public facility lighting.
