Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流适用于中学、中专等学校实验室，可测微弱电势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外电感电容电阻仪(HP4284A)进行C-V曲线测；微仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

电磁铁和恒流电源、数字式高斯 （霍尔效应）、和伏特、配有照系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流安培计适用于中学、中专等学校实验室，可测微弱电势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以电感电容电阻计仪(HP4284A)进行C-V曲线测；以微安培计仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

电磁铁和恒流电、数字式高斯计 （霍尔效应）、安培计和伏特计、配有照明系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流安用于中学、中专等学校实验室，可测微弱电势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外电感电容电阻仪(HP4284A)进行C-V曲线测；微安仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

电磁铁和恒流电源、数字式高斯 （霍尔效应）、安和伏特、配有照系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流安培适用于中学、中专等学室，可测微弱电势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以电感电容电阻仪(HP4284A)进行C-V曲线测；以微安培仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

电磁铁和恒流电源、数字式高斯 （霍尔效应）、安培和伏特、有照明系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流安培适用于中学、中专等学室，可测微弱电势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以电感电容电阻仪(HP4284A)进行C-V曲线测；以微安培仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

电磁铁和恒流电源、数字式高斯 （霍尔效应）、安培和伏特、有照明系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流安培计适用于中学、中专等学校实验室，可测微弱电势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以电感电容电阻计仪(HP4284A)进行C-V曲线测；以微安培计仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

电磁铁和恒流电、数字式高斯计 （霍尔效应）、安培计和伏特计、配有照明系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流安培计适用于中学、中专等学校实验室，可测微弱电势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以电感电容电阻计仪(HP4284A)进行C-V曲线测；以微安培计仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

电磁铁和恒流电源、数字式高斯计 （霍尔效应）、安培计和伏特计、配有照明系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直安培适用于中学、中专等学校实验室，可测微弱势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以感容仪(HP4284A)进行C-V曲线测；以微安培仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

磁铁和恒、数字式高斯 （霍尔效应）、安培和伏特、配有照明系统的控制盘。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.

JO415型直流安培计适用于中学、中专等学校实验室，可测微弱势用。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以容阻计仪(HP4284A)进行C-V曲线测；以微安培计仪(HP4140B)进行J-V曲线测。

The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.

磁铁和恒流源、数字计 （霍尔效应）、安培计和伏特计、配有照明系统的控制盘。