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直流电源输出技能有哪些指标?

  直流电源,直流稳压电源输出技能指标:

  1,直流电源额外输出电压:输出端直流电压的公称值。关于公称电压规则有精度和纹波系数等,

  2,直流电源额外输出电流:输出端供应负载的最大均匀电流。依据电子设备的不同,多路愉出电像中某路输出电流增大,另路输出电流就得减小,以保持总的输出电流不变。

  3,直流电源稳压精度:稳压精度也称为输出电压精度或电压调整率,是指当电源的工作条件发生改变,山杰直流电源输出电压的改变值与额外电压值之比的百分数。稳压精度能够反映出电源产品的功用和质,直流安稳电源常用的精度一般镇士1%,其输出电压的变化主要有如下原因。

  ①静态输入电压引起的变化。其他功用指标为额外条件下,在规则规模内输人电压缓慢变动时引起直流电源输出电压的变化。

  ②静态负载引起的变化。其他功用指标为额外条件下,输出电流在规则规模内缓慢变化时引起直流电源输出电压的变化。在规则负载变化规模内及多路输出的条件下,可能直流电源有非安稳输出的状况,因此还包含规则最高负载电流。最高负载电流下的规则精度,一般是维护功用没有发挥作用时的状况。别的,关于多路输出的电源,山杰直流电源电路方法的不同也会遭到其他输出负载变化的影响。

  ③直流电源动态输人电压引起的变化。其他功用指标为额外条件下,输入电压以规则的起伏急剧改变时引起输出电压的变化。一般是把输入电压的上限与额外输入电源及输人电压的下限作为变化起伏。

  ④直流电源动态负载引起的变化。其他功用指标为额外条件下,输出电流按规则的起伏急剧改变时引起输出电压的变化。动态负载引起的变化不包含安稳的脉冲负载引起的变化。

  4,直流电源输出电压可调规模:在保证电压安稳精度条件下,由外部可调整的输出电压规模。一般为±5%或±10%。条件是输人电压为下限时输出电压取最大值,以及输人电压为上限时输出电压取最小值。

  5,直流电源输出电流变化规模:依据设备的结构决定负载电流时,一般负载下其输出电流的改变应该很小,如果是理性负载等冲击电流较大的冲击负载时,就要限定输出电流变化规模。

  6,直流电源纹波与噪声:纹波是直流稳压电源输出端出现交流成分的重量,用峰一峰值表明,一般为输出电压的0.5%以内。噪声是输出端出现的除纹波以外频率的重量,一般也用峰一峰值表明,一般为直流电源输出 电压的1%左右。当噪声与纹波没有清晰区分时,应规则纹波与噪声的总组成值。大都场合中规则直流电源纹波与噪声的总组成值为输出电压的2%以内。

  7,直流电源线路调整率:输入电压的动摇规模与输出电压的动摇规模之比。跟着技能的开展,线路调整率不断提高。直流电源对电网的适应能力很重要。

  DC power supply, DC regulated power output skill index:

  1, the extra output voltage of the DC power supply: the nominal value of the DC voltage at the output end. The rules of the nominal voltage have precision and ripple coefficient, etc.

  2, the additional output current of the DC power supply: the maximum uniform current of the output supply to supply the load. According to the difference of electronic equipment, the output current of one way is increased and the output current of the other path will be reduced to keep the total output current unchanged.

  3, DC power supply voltage accuracy: the precision is also known as the precision of output voltage or voltage regulation rate, is when the power supply work conditions change, the percentage ratio and additional voltage value of the output voltage of DC power to change the sun Jake value. The accuracy of voltage regulation can reflect the function and quality of power supply. The accuracy of commonly used DC power supply is generally 1%, and its output voltage changes are mainly caused by the following reasons.

  (1) changes caused by static input voltage. Under the additional conditions, the change of the output voltage of the DC power supply is caused by the slow change of the voltage in the regular scale.

  (2) changes caused by static load. Under the additional conditions, the output current will change slowly when the output current varies slowly within the regular scale, and the output voltage of the DC power supply is changed. Under the condition of regular load changing scale and multi-channel output, DC power may have unstable output, so the highest load current is also included. The rule precision of the maximum load current is generally the condition when the maintenance function does not play a role. On the other, the power of multi output DC power supply circuit, sun Jake methods also influenced by other output load changes.

  The change of dynamic transmission voltage caused by DC power supply. Under the additional conditions, the output voltage changes when the input voltage changes sharply with the sharp fluctuation of the rule. In general, the upper limit of the input voltage is fluctuated with the lower limit of the additional input power supply and the transmission voltage.

  (4) the change caused by the dynamic load of the DC power supply. Under the additional conditions, the output voltage changes when the output current changes sharply according to the fluctuation of the rule. The changes caused by the dynamic load do not contain the changes caused by the stable pulse load.

  4, the adjustable scale of the output voltage of the DC power supply: under the condition of guaranteeing the stability and precision of the voltage, the output voltage scale can be adjusted by the external adjustable. It is usually 5% or + 10%. The condition is that the output voltage is the maximum when the voltage is lower, and the output voltage is minimum when the transmission voltage is upper limit.

  5, the scale of DC power output current changes: according to the structure of the device, the output current should be changed under general load when deciding the load current. If it is a shock load with large impulse current such as rational load, it is necessary to limit the scale of output current.

  6, DC power ripple and noise: ripple is the weight of AC components at the output of DC regulated power supply. The peak value indicates that it is generally less than 0.5% of the output voltage. The noise is the output other than the ripple in the frequency of the weight, generally also use peak and peak value, generally the DC power output voltage of about 1%. When there is no clear distinction between the noise and the ripple, the total composition of the regular ripple and the noise is required. In most occasions, the total component value of the ripple and noise of the regular DC power supply is less than 2% of the output voltage.

  7, the adjustment rate of DC power line: the ratio of the wavering scale of the input voltage to the shaken scale of the output voltage. With the development of the skills, the rate of line adjustment is increasing. The DC power supply is very important to the adaptability of the power grid.

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