Product Introduction:
JJW3-2000VA Uniross Regulated Ac Dc Adaptor
Uniross regulated ac dc adaptor also known as DC voltage regulator. Its power supply voltage is mostly AC voltage, when the voltage of the AC power supply voltage or the output load resistance changes, the direct output voltage of the regulator can remain stable. The uniross regulated ac dc adaptor of the regulator include voltage stability, ripple coefficient and response speed. The former represents the effect of a change in the input voltage on the output voltage. The ripple coefficient represents the AC component of the output voltage under rated operating condition,. The latter indicates the time required for the voltage to return to normal when the input voltage or load changes dramatically. Dc voltage stabilized power supply is divided into continuous continuous conduction type and switch type two types. The former changes the single-phase or three-phase AC voltage to the appropriate value by the power frequency transformer, and then gets the unstable DC power supply by rectification and filtering, and then gets the stable voltage (or current) by the voltage regulator circuit. This power supply line is simple, small ripple, small interference with each other, but large volume, many consumables, low efficiency (often less than 40% to 60%). The latter adjusts the output voltage by changing the on-off time ratio of the adjustment element (or switch) to achieve voltage regulation. This kind of power consumption is small, the efficiency can reach about 85%, but the disadvantage is large ripple and mutual interference. Therefore, the development has been rapid since the 1980s. From the way of work can be divided into:
① Controllable rectifier type. Adjust the output voltage by changing the conduction time of the thyristor.
② Chopper type. The input is unstable DC voltage, to change the on-to-break ratio of the switch circuit to obtain one-way pulsating DC, and then filtered to obtain stable DC voltage.
③ Transformer Type. Unstable DC voltage is first converted into high frequency AC by the inverter, and then after the voltage change, rectification, filtering, from the new DC output voltage sampling, feedback control inverter working frequency, to achieve the purpose of stable output DC voltage.
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