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通過任意長度的銅線控制遠端負載的電壓設計要點529

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电子产品世界 2014年第9期 34-35页

作者： philip karantzalis

引言在功率分配系統中,由於穩壓器和負載之間的電纜/導線壓降而產生穩壓問題是很常見。導線電阻、電纜長度或負載電流的任何增加都會使配電線上的壓降增大,從而擴大負載上的實際電壓與穩壓器所獲電壓之間的差異。改善長電纜線路上穩壓... 详细信息

引言在功率分配系統中,由於穩壓器和負載之間的電纜/導線壓降而產生穩壓問題是很常見。導線電阻、電纜長度或負載電流的任何增加都會使配電線上的壓降增大,從而擴大負載上的實際電壓與穩壓器所獲電壓之間的差異。改善長電纜線路上穩壓能力的一種方法是通過在穩壓器和負載之間採用四線式開爾文(Kelvin)連接,直接地在負載上測量電壓。不幸的是,這種解

关键词：電阻 RFA 阻值

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较低功率运放:实用正弦波设计要点564

电子产品世界 2017年第8期 48-49页

作者： Catherine Chang philip karantzalis Aaron Schultz

引言我们的运放系列已经取得了扩充,而且相对于电源电流的速度指标达到了业界领先水平。LTC?6258/LTC6259/LTC6260系列（单、双、四路）可在20μA的超低电源电流情况下提供1.3MHz增益带宽,并具有400μV的最大失调电压以及轨至轨输入和... 详细信息

引言我们的运放系列已经取得了扩充,而且相对于电源电流的速度指标达到了业界领先水平。LTC?6258/LTC6259/LTC6260系列（单、双、四路）可在20μA的超低电源电流情况下提供1.3MHz增益带宽,并具有400μV的最大失调电压以及轨至轨输入和输出。结合一个1.8V至5.25V电源,这些运放可实现要求在低功率和低电压条件下以合理成本提供不打折扣之性能的应用。

关键词：运放低电压带通滤波器 LTC 正弦波低功率

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具有跟踪滤波及开关电容滤波的正弦波振荡器

电子设计技术 EDN CHINA 2005年第12期12卷 78-78页

作者： James Mahoney philip karantzalis 凌特公司

对于总线控制的振荡器而言,往往是产生一个低失真10Hz至10kHz正弦输出.一般的低成本函数发生器采用二极管成形技术把方波转变成正弦波.而二阶和三阶谐波分别的典型值为-35dBm和-25.5dBm.

关键词：正弦波振荡器电容滤波跟踪滤波开关函数发生器总线控制成形技术输出低失真二极管

MicroRNAs as potential diagnostic biomarkers for bipolar disorder

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Neural Regeneration Research 2025年第6期20卷 1681-1695页

作者： Bridget Martinez philip V.Peplow Department of Pharmacology University of Nevada-RenoRenoNVUSA Department of Medicine University of Nevada-RenoRenoNVUSA Department of Anatomy University of OtagoDunedinNew Zealand

Abnormal expression of microRNAs is connected to brain development and disease and could provide novel biomarkers for the diagnosis and prognosis of bipolar disorder. We performed a PubMed search for microRNA biomarkers in bipolar disorder and found 18 original research articles on studies performed with human patients and published from January 2011 to June 2023. These studies included microRNA profiling in bloodand brain-based materials. From the studies that had validated the preliminary findings,potential candidate biomarkers for bipolar disorder in adults could be miR-140-3p,-30d-5p,-330-5p,-378a-5p,-21-3p,-330-3p,-345-5p in whole blood, miR-19b-3p,-1180-3p,-125a-5p, let-7e-5p in blood plasma, and miR-7-5p,-23b-5p,-142-3p,-221-5p,-370-3p in the blood serum. Two of the studies had investigated the changes in microRNA expression of patients with bipolar disorder receiving treatment. One showed a significant increase in plasma miR-134 compared to baseline after 4 weeks of treatment which included typical antipsychotics, atypical antipsychotics, and benzodiazepines. The other study had assessed the effects of prescribed medications which included neurotransmitter receptorsite binders(drug class B) and sedatives, hypnotics, anticonvulsants, and analgesics(drug class C) on microRNA results. The combined effects of the two drug classes increased the significance of the results for miR-219 and-29c with miR-30e-3p and-526b* acquiring significance. MicroRNAs were tested to see if they could serve as biomarkers of bipolar disorder at different clinical states of mania, depression, and euthymia. One study showed that upregulation in whole blood of miR-9-5p,-29a-3p,-106a-5p,-106b-5p,-107,-125a-3p,-125b-5p and of miR-107,-125a-3p occurred in manic and euthymic patients compared to controls, respectively, and that upregulation of miR-106a-5p,-107 was found for manic compared to euthymic patients. In two other studies using blood plasma,downregulation of miR-134 was observed i

关键词： biomarker bipolar disorder blood leukocytes blood plasma blood plasma extracellular vesicles/exosomes blood serum brain tissue brain tissue extracellular vesicles/exosomes lymphoblastoid cell lines microRNA neural progenitor cells whole blood

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