2014年3月12日星期三

Isolated&non-isolated power supply switching Here are some questions about power supply switching: 1.How to better understand stablized and unstablized or regular and unregular power supply switching? Simply speaking, regular voltage means the output voltage is steady and will not change to change with the load,unregular means when the load arrive the rated voltage,the output voltage has adjust 2.What's the difference between fixed input and wide range input power supply switching? Fixed input means the fixed input voltage,like 5V 12V 15V 24V etc, Wide range input means the input has a distance,like from 9V to 18V,during this voltage,the device can work perfect. 3.What's the difference between isolated and non-isolated power supply switching? Isolated power supply switching means the input and ouput all isolated and independent ground Non-isolated power supply switching means the input and output with common ground Chonda tech power supply switching converters includes the 1000VDC,1500VDC, 3000VDC,4500VDC isolated power supply switching converters,and the dual isolated dual output(input to input isolation and output to output isolation) 2:1 and 4:1 wide input power supply switching DC DC converters from the small powerW5 to big power,if you have any special requirest,just offer your request,thanks for your coopearation.

The best step down converter-ac to dc power supply As the searching report finding that Step-down converter(transformers) are commonly used to convert the 220 volt electricity to the 110 volts required by North American equipment. from our selling data indicate that this Step-down converter mainly from AC TO DC POWER SUPPLY,and input range from 100V to 1000V converter. But What is a step down converter?is one whose secondary voltage is less than its primary voltage. It is designed to reduce the voltage from the primary winding to the secondary winding. This kind of converter “steps down” the voltage applied to it. As a step-down unit, the transformer converts high-voltage, low-current power into low-voltage, high-current power. The larger-gauge wire used in the secondary winding is necessary due to the increase in current. The primary winding, which doesn’t have to conduct as much current, may be made of smaller-gauge wire. CHONDA TECH claims some attentions: 1.please connect the cable strictly according to the icon indicate the ac to dc power supply ,input port have to add the fuse-unput voltage has no negative,don;t worry the ac to dc power supply was fired if the compeletely opposite connection 2. In order to make sure the step-down converter (ac to dc power supply) supply the sufficient voltage and power,try to select the cable as thick as you can 3.if the output port has multiple cable,please make the current be average to each output. For step-down converter and AC to DC power supply products details,welcome to have review our proucts guide line

Wholesale 120v to 12v Dc Converter This is Inverter DC 12V to 120VAC,this converter can deal with the load depend on the converters/transformers variable dc power supply. Chonda tech professional manufacture the AC DC converter and DC DC converter,wholesale variable dc power supply Wholesale 120v to 12v Dc Converter is obviousely belongs to AC DC converter,input range from 85V to 220V condition,isolation converer,high density reliable usage for devices. Low input and high output voltage converter is extremely hotsale,like output range from 100V to 500V CONVERTERS. If you are just seeking for this high qulity and best price and excellence service,don't hestate to contact us immediately.

DC DC 4:1 wide range input power converters in Automotive electronics filed DC DC power converters has the short design cycles,high reliable, system easy to update and advance features,which make the DC DC power converters widely used.CHONDA TECH push the new seriouse 4:1 wide range input power converters on the the market,with the sealed metal shell,high power density,small size for the automotive electronics field. The advanteages has two points: 1. As the automotive eletronics use 12V or 24V power supply,the voltage changes is extremely wide,if use the DC DC power converters input 2:1 will be limited during the working process,if the battery couldn't exchange,and hard to bear this voltage hit.Chonda tech design the 4:1 wide range input DC DC power converters,working temperature from -45 degree to 85 degree,solving the normal power converters lower adjust voltage faulty causing the power convertes couldn't used for automotive electronics field problem.This series power converters is popular used for 12V or 24V power supply autmotive eletronics field. 2. CHONDA TECH 4:1 wide range input DC DC power converers series,adopt the five side metal sealed,isolated 1500VDC,can isolate the automotive electonics powe supply systems super interfence,MTBF more than 100 0000 hours,high efficiency working and stablized working,and enhance the automotive electonics power supply much stronger than before.

2014年3月6日星期四

24v to 12v converter 24V to 12V converter, adopts imports high integraty switching mode power supply,all the components MATERIAL purchase from the world famouse manufactory,synchronous rectification technology, above 85% efficiency,lowest heat,smallest size and convenience be installed for all the devices. Application for BUS,CAR,SHIP,BOATS,INSTRUMENTS AND EQUIPMENTS,LED,CCTV CAMERA,MONITOR SYSTEMS,ETC RAILWAY STATION,ADVERTISEMENT SCREEN. Mainly features for DC DC COVERTER,24V TO 12V CONVERTER Input output lsolation: adopt the compeletely isolation design 1000VDC/1min Protection: input over voltage protection, short circuit over voltage protection EMI filter: built-in EMI filter unit to reduce interference between power grid and power supply Outline sealed: ultra-thin small integration design, high efficiency high density Cooling method: Natural cooling, without additional radiator Technical features: Input voltage range: 9V-18V 18V-36V 36V-72V 36V-72V(80V MAX) 72V-144V Output voltage and current : +/-5V,9V,12V,15V,24V,48V(voltage adjust range ±10%) Output ripple: 50 Transient : overshoot magnitude; ±5%V Recovery time:200us Effect : source effect: ±2%V Effect of load:±5%V Protection: over voltage, over current, short circuit Temperature: A working termperature:-25-75℃ B storage temperature:-40-85℃ Output voltage steady regulation accuracy : ±1% MTBF : 8*100000 hours Welcome to have more questions to our email, CHONDATECH can produce the dc dc switching power supply converter,24v to 12v converter from 1W to 200W

12v dc power supply CHONDA ND BRAND switch dc dc converter power supply adopts imported components, with advanced technology, design and manufacture meticulously, each switch power supply have been one hundred percent of aging test before delivery, builtin battery of EMI filter, short circuit protection, overload protection, small size, light weight, low working temperature over voltage protection, high efficiency, 105 °C output capacitors, long service life, strictly according to the global voltage. Usage: suitable for office automation equipment, car electronic, instruments and meters, wireless communications equipment, TV, camera, monitor, LED display, etc 12V DC POWER SUPPLY has the follow features: Parameters: Input rate voltage:220VAC Allow input voltage range:100-240VAC Ripple and Noise: 1% of output voltage Output voltage current adjust range:12v 2.1A(±8%) Stablized value: typicially 0.5% Over protection:115%-135% EMI: (a) FCC PART 15A B level (b) EN55022,CISPRPUB22A,B level High voltage test: input and shell,input and outout current 2000VAC stay 1min,the leakage current less than 10ma,output and shell plus AC 500VAC 1 min leakage current less than 10mA Insulation resistance: input and Grand,input and output more than 30M The above is the details of 220v-12v dc power supply,if you are interested in the switching power supply 220V-12v and with requests,please contact chondatech for further interaction for more information on 12V DC power supply series,We are manufactory the AC DC converters and power converters

Inverter brief introduction Inverter brief introduction: convert direct current (DC) to alternating current (AC) of the device, the scientific term is (Inverter). Due to changes in frequency converter device voltage or frequency of the main device is called "INVERTER", so the product itself is named "INVENTURE", Generally speaking, we name the steady voltage and frequency AC change to variable voltage or frequency of alternating current (ac) device called a "converter". VVVF: change Voltage, Frequency, Variable Voltage and Variable Frequency). CVCF: Constant Voltage and Constant Frequency (Constant Voltage and Constant Frequency). In order to produce the variable voltage and frequency, frequency converter must first convert the power of the alternating current (AC) to direct current (DC), and then convert direct current (DC) to alternating current (AC). Frequency converter for motor control, can change the voltage, and can change the frequency. But most of the frequency converter used in fluorescent lamp is used to adjust the frequency of power supply. Cars use alternating current generated by the cell (dc) of the equipment is in the name of "inverter" for sale. The working principle of the inverter is widely used in various fields.Take an example, the Power supply of computer switching power, in this application, frequency converter is used to inhibit the reverse voltage, frequency, power fluctuation and the short circuit.