One-button operation, automatic shutdown.
The shutdown current is only about 20nA.
8MH crystals were used.
Can automatically detect NPN, PNP transistors, N-channel and P-channel MOS FETs, junction FETs, diodes, dual diodes, low-power unidirectional thyristors and triacs. Automatically identify the pinout of the component. The current amplification factor and the base-emitter threshold voltage of the bipolar transistor are measured. The protection diodes of the bipolar transistor and the MOS transistor can be detected.
Measure the gate threshold voltage and gate capacitance of the MOS FET. Two resistors can be measured simultaneously and displayed as a resistance symbol. A 4-digit value with a decimal is displayed on the right side. The pin number is displayed on both sides of the resistor symbol. It is therefore possible to measure the potentiometer. If the wiper end of the potentiometer is not adjusted to an extreme position, the middle and both ends of the pin can be distinguished. The resolution of the resistance measurement is 0.1 ohm and can be measured up to 50M ohms. Capacitance can be measured. Displayed with the capacitor symbol, the value is displayed on the right side, and the value with a decimal number of 4 digits can be displayed. Capacitance of 30pF-100mF can be measured with a resolution of 1pF. Capacitors above 2uF can simultaneously measure the ESR value of the equivalent series resistance. It can display two digits with decimals with a resolution of 0.01 ohms. The two diodes can be displayed in the correct order and with the diode symbol, giving the forward voltage of the diode. The LED is detected as a diode with a higher forward voltage. The two-in-one LED is identified as two diodes. A Zener diode with a reverse breakdown voltage below 4.5V can be identified. The reverse capacitance of a single diode can be measured. The reverse capacitance of the collector or emitter junction can also be measured if the base of the bipolar transistor and one of the collector or emitter pins are connected.The connection of the rectifier bridge can be obtained in one measurement. Although the lower limit of capacitance measurement is 25pF, you can measure the capacitance in parallel with a capacitor of known capacity of at least 25pF, and then subtract the capacitance in parallel from the measurement result to get the desired result.
Third, test component demonstration
1. Measure a 27+-5%ohm resistor, the nominal value of the resistor is 1% deviation, within the allowable deviation range. The measurement results are accurate.
2. Measure a 1N4007 diode, which clearly shows the positive and negative diode and junction voltage drop, junction capacitance, reverse current and other parameters.
3. Measure the capacity of the 10nF capacitor
4. Measuring the unidirectional thyristor MCR100-6, it is easy to distinguish the pins
5. Measuring the pins and parameters of the triode
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