1PC M328 version lc ESR meter multi-function tester new Description 1PC M328 version lc ESR meter multi-function tester new On the transistor multifunction tester: Tester to use 3.7 V rechargeable lithium battery powered portable design, can use at the same time T MINIUSB socket for battery charging and power supply system, and indoors for a long time to use more economical, convenient and always want to replace the battery of economic input! This tester is stable performance, it can automatically read data accurately, use convenient, suitable for electronic enthusiasts, electronic developers, designers, and electronic WeiXiuZhe necessary instruments.Can test the direct plug-in devices already, also can test patch element, it can be measured various diode, triode, SCR, MOS field effect tube;To determine the device type, the polarity of the pin, output HFE, valve voltage, field effect tube junction capacitance, conditions attached to the measurable capacitance and resistance, etc.Especially suitable for transistor pair and mixed element identification table Function description: One key measure operation, delay automatically shut off the power.Shut off the current 20 na, support for battery operation. Pieces of automatically detecting the PNP and NPN bipolar transistor, N, P channel MOSFET, jfets field-effect tube, diode, double diode, thyristor, resistance, capacitance and inductance.Automatically detect pin definition. Bipolar transistor current is measured in pieces amplification coefficient (B) and emission of conduction voltage (Uf).Darlington transistors can be high threshold voltage and high current amplification factor recognition. Mixer can detect the bipolar transistor and the inside of the MOSFET protection diode and display on the screen. Mixer measurement MOSFET threshold voltage and gate capacitance value. Support two resistance measurements, potentiometer can also be measured.If one end of the potentiometer to adjust to it, the tester is unable to distinguish between the middle and at the ends of the pin. The resolution of the resistance measurement is 0.1 ohms, highest measured value up to 50 m ohm. Pf mixer capacitance measurement range from 25 to 100 mf (UF) 100000.Resolution can reach 1 pF, inductance measuring range is 0.01 MH - 20 h, otherwise it will show as the resistance, if the inductance of the direct current resistance value is higher than 2100 uefa also displays for resistance. The mixer can detect more than 2 uf capacitor equivalent series resistance (ESR), a resolution of 0.01 ohms.This function for detection capacitance performance is very important. Two diode mixer can be displayed in the right direction signs, also showed a positive pressure drop. Pieces for evaluation of a LED diode, positive pressure drop than normal on the high side.Double light emitting diode detection for the diode.Detection of leds will shine. Each test time is about two seconds, only large capacitance and inductance measurement will need a long time. Correction methods: Short answer the three test side, into the test, the screen prompt correction step.When prompted to disconnect nipple when disconnected three calibration will continue to test end, when prompted, please access in 1 to 3 feet above 100 nf capacitance, access and distribution of 1 uf correction capacitor after the program will automatically into the next step.Until the end of the correction to restart, can complete the correction. LCD display: English name Chinese name Test is running. ???. Test Failed! Defect Devive ????! Timeout! ????! Battery Low!Empty! ?????! main parameters and use: 1. Using ATmega8, ATmega168 or ATmega328 microcontroller. 2 2x16 character LCD display results. 3 one-button operation, automatic power off. 4 shutdown current of only 20nA, support for battery operation. 5 low-cost version without the crystal, auto power off. 1.05k version of the software ATmega168 or ATmega328 in sleep mode when there is no measurement to reduce power consumption. 6 Automatic detection PNP and NPN bipolar transistor, N, P-channel MOSFET, JFET, diodes, dual diode, thyristor SCR. 7 automatically detects the pin layout. 8 the threshold voltage and current amplification factor and the emitter of the bipolar transistor measurements. 9 Darlington transistors can be through a high threshold voltage and high-current amplification factor identified. 10 pairs of bipolar transistors, MOSFET protection diode testing. The threshold voltage value 11 and the gate capacitance of a MOSFET is measured. 12. Supports two resistance measurements and symbols show the highest four numbers and units. Both ends of the resistor symbol is shown connected to the tester probe number (1-3). Therefore, the potential can also be measured. If the potentiometer is adjusted to its end, the tester can not distinguish between the middle and ends of the pin. 13 resistance measurement resolution is 0.1 ohms, the maximum measured value of 50M ohms. 14 can be detected and measured a capacitor. Maximum four numbers and units. Value can be from 25pf (8MHz clock, 50pF @ 1MHz clock) to 100mF. Resolution up to 1 pF (@ 8MHz clock). 15 may be larger than the value for 2UF capacitor equivalent series resistance (ESR) to measure the capacitance value. Resolution of 0.01 ohms and a two-digit numeric display. This feature requires at least 16K Flash ATMEGA (ATmega168 or ATmega328). Two diodes 16 can display symbols in the right direction. Further, the display forward voltage drop. 17 LED detected as diodes, the forward voltage drop is much higher than normal. Dual LEDs detected as double diode. Zener diode 18 can be detected, if the reverse breakdown voltage is less than 4.5V. This will appear as two diodes, can only be determined by the voltage. Probe around the diode symbol is the same, in this case, you can 700mV threshold voltage close to the true recognition diode anode! 19 If more than three diode-type parts inspection, failure to establish the number of diodes Another message is displayed. This will only happen if the diode is connected to all three probes and at least one diode. In this case, you should only connect the two probes and start the measurement again, one by one. A single diode 20 to measure the capacitance value of the reverse. Bipolar transistors also can measure, if you connect the base and collector or emitter. 21 requires a measurement to find full-bridge connection. 22 values of less than 25pf capacitors usually undetectable, but in parallel with a diode or at least 25pf capacitor in parallel. In this case, you must subtract the part shunt capacitance values. 23 ohm resistor will measure the inductance of less than 2100, if you have at least 16K ATMEGA flash memory. Range from 0: 01mH than 20H, but the accuracy is not good. Measurement results show only a single element is connected. Test time 24 is about two seconds, and only the capacitance and inductance measurements will require a longer period of time. 25 software can be set to automatically turn off the power measurement times before. 26 built-in self-test function with selectable clock frequency of 50Hz signal check the accuracy and waits for a call (ATmega168 and ATmega328). 27 selectable resistance and zero offset calibration of measuring equipment output port self-test capability (ATmega168 and ATmega328). Need a 100nF to 20uF capacitor connected to the compensation between the analog comparator pins 1 and 3 of the offset voltage. This can reduce measurement errors 40uF more capacitors. With the same internal calibration capacitor voltage reference voltage adjust the reference measurements was found inside the ADC gain. If the test current exceeds the holding current, the SCR and triac can be detected. But some current higher than the semiconductor SCR and triac tester can provide the trigger current. Available test current is only about 6mA! Note that all functions have a microcontroller is used only for more program memory as ATmega168. include : 1 PC ((not include battery) Payment Payment : We accept paypal Credit card payments must be made through PayPal. We recommend you to sign for a PayPal account before bidding. We will Not take responsible on Customs duty if any Shipping time : Shipping time : If you haven't get your parcel within the expected date,Pls contact with us directly.We can ensure solve it for you .Pls trust us .We need your support. Thanks .Yours Sincerely. 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