是否有现货: | 是 | 用途: | 电子 |
体积: | 微型 | 电压特性: | 电压 |
熔断速度: | FF/特快速 | 执行标准: | 国标 |
自动复位功能: | 有 | 品牌: | Littelfuse/力特 |
大小: | 小号 | 类型: | 电子 |
材质: | 电木 | 形状: | 保险片座 |
安装方式: | 仪表面板安装保险丝座 | 环保类型: | 环保 |
温控范围: | -45-85 | 动作温度: | -45-45 |
保持电流: | 0.1-5A | 最大电流: | 40 |
最大电压: | 33V | 型号: | Minismdc010 |
规格: | 1812 | 商标: | Te |
包装: | 盘装 | 产量: | 5000000 |
蓄电池充电电路保护
图1是一个典型的电池充电电路。其中,交流电通过AC/DC电源适配器转变为合适电压对电池组进行充电。PPTC元件与过压保护元件协调作用共同完成下列工作:
1)针对可能损坏FET以及电池组的过大电流,提供过电流保护。
2)极性倒置时,PPTC通过动作以限制由于齐纳二极管正向导通而产生的过电流。
3)在过电压元件对电压过载提供保护时,由PPTC元件对导通电流进行限制,以保护过压器件。
PPTC元件也可以用于接电池组的装置的端口,以保护由于使用有故障或不匹配的电池组而带来的过电流损害。对各种免提式汽车通话装置或耳机等供电时,电池组输出端保护亦能提供理想的保护功能。
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SMD1812P110TF/24SMD1812P110TF/33SMD1812P125TF/16SMD1812P125TF/6,4L
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SMD2920P300TFSMD2920P300TF/15