{"error":{"root_cause":[{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*PT4581,pdf(30 Watt 24V/48V Inp.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"recommend_keyword_search_v1","node":"-Gn7X2aRSFmN2hMyaNEUCA","reason":{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*PT4581,pdf(30 Watt 24V/48V Inp.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1","caused_by":{"type":"illegal_argument_exception","reason":"expected ')' at position 34"}}}]},"status":400}
The PT4580 series is a single-output isolated DC/DC converter, housed in a 19-pin space-saving
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描述200W single stage boost converter, 48V @ 4A out of 24V input
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公司专业生产12V ,24V,36V,48V,60V,72V纯正波逆变器
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线性IC LED涌泉灯12V/24V/48V七彩RGB水底灯PWM调光设计方案
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48V电源,48V电瓶车电压如48V-60V等,需要降压到12V的温度电压,或者48V降压到15
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为什么通信设备使用–48V 这样的负电源系统? A:这里面包含2 个意思:(1) 极性为何是负电源(也就是正接地)?(2) 电压为何为-48V(-36~ -72V)?先说一下第2个问题。使用-
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描述此参考设计可基于 18V-48VDC 输入电压提供隔离式 24V/1A 输出。该电源位于小巧的 1.1 英寸 x 2.4 英寸电路板上,可实现高于 90% 的峰值效率。主要特色从 18VDC 到
2018-12-17 15:33
(...)主要特色Wide input protection voltage rangeScalable to multiple battery topologies (12V, 24V, 48V
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什么是48V开关电源? 48V开关电源就是用通过电路控制开关管进行高速的导通与截止。将直流电转化为高频率的交流电提供给变压器进行变压。从而产生所需要的一组或多组电压,转化为高频交流电的原因是高频
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1、安全考虑。比安全电压36V略高。2、历史的沿袭。 早期的电话等通信设备,大多采用的48V电压供电。-48V 电源系统只是我国和大部分国家采用的通信电源标准。3、处于-48V
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