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现代电生理实验,尤其是细胞内电位的记录。需微电极放大器。目前国内产品不但数量少且价格昂贵(成都仪器厂生产的SWF-Ⅰ型高阻微电极放大器价约4200元),为配合电生理学教学,使学生多动手做一些高档级的电生理学实验,特研制本仪器 一、ZJY—Ⅱ型微电极放大器的设计与调整 (一)微电极放大器的技术指标 增益,可调至1,000;输入电阻,至少可调至10GΩ;漏电流,可调至小于10PA(一般可调至1PA);工作输入电压范围为±2V瞬变信号,负电容
Modern electrophysiology experiments, especially the recording of intracellular potentials. Need microelectrode amplifier. At present, the domestic products are not only in small quantities but also expensive (SWF-Ⅰ high-resistance microelectrode amplifier manufactured by Chengdu Instrument Factory is about 4200 yuan). In order to cooperate with electrophysiology teaching, students are encouraged to do some high-grade electrophysiology experiments Development of the instrument First, the design and adjustment of ZJY-Ⅱ type micro-electrode amplifier (A) Technical indicators of micro-electrode amplifier gain can be adjusted to 1,000; input resistance can be adjusted to at least 10GΩ; leakage current can be adjusted to less than 10PA ( Generally adjustable to 1PA); Working input voltage range ± 2V transient signal, negative capacitance