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请教一下如何给高压运放供电

Other Parts Discussed in Thread: TL431

最近想用高压运放做个驱动器,一直不清楚如何给高压运放供电,像APEX的高压运放要求供电正负一百多伏,看资料有用7824串接的,有用开关电源串接的,感觉都有很大的缺陷,用7824效率太低,也过于复杂,如果要搭建一个正负120V的电源,就要使用7824和7924各5个,再加上变压器、整流桥、滤波电容,成巨无霸了。如果用开关电源串接,也要使用好多个开关电源,而且开关电源的纹波又很难处理,不知道TI有没有成熟的解决方案啊?求高手赐教!