TFT LCD GM328 Transistor Tester Diode LCR ESR Meter PWM Square Wave Generator

Description

Description:
Features:
100% brand new and high quality
Made of high quality material, durable and practical to use
Using MCU ATMEAG328P DIP-28. With IC holder
The display unit uses a 160x128 pixel color display, full-screen characters 8x20, 16-bit color depth, and graphic display element symbols
Rotary switch control, one-key measurement, automatic shutdown
Use 9V laminated battery, you can also use power adapter (DC 6.8-12V), the full current is about 30mA, and the shutdown current is about 20nA
Automatic detection of NPN and PNP transistors, FETs, diodes, dual diodes, thyristors, SCRs, automatic identification of transistor pins
Test the magnification of the common emitter current of NPN and PNP transistors, base-emitter threshold voltage, turn off the collector-emitter leakage current
A Darlington transistor recognized by the base-emitter threshold voltage and high current gain across the transistor
Detect built-in power transistor and FET protection diode
Test whether the FET gate-source threshold voltage is open, drain-source on-resistance, gate-source capacitance
Up to two measuring resistances, so the adjustable resistance of three feet can be measured. If the adjustable resistance is transferred to the end, it can only be one measured resistance value
The maximum resolution of resistance measurement is 0.01Ω. It can measure up to 50MΩ
Capacitor measurement range is 25pF-100mF, resolution is 1pF
For capacitors larger than 90nF, measure its equivalent series resistance (ESR) at the same time. The maximum resolution of the equivalent series resistance is 0.01Ω
Capacitors larger than 5000pF also show the value after the capacitor's charging voltage drop rate can reflect the quality factor (Q value)
Measuring up to two diodes can display their positive and negative on-state voltages
LED also displays the graphic symbol diode, the conduction voltage is much higher than ordinary diodes
A Zener diode with a reverse breakdown voltage lower than 4.5V can be detected and displayed as a double diode symbol. Its positive and negative voltage is based on the diode symbol of about 700mV, and the second diode symbol corresponding to the voltage is turned on and adjusted .So don't measure ordinary diodes and Zener diodes at the same time
Testing a single diode, and the PN junction capacitance of the transistor under test between the PN junction capacitance between the reverse junctions, can only enter the base and emitter, base and collector of the transistor at the same time
For the capacitor to be tested less than 25pF, the test needs to prepare a 30pF capacitor, test the 30pF capacitor, test the capacitor in parallel before measuring, and subtract the measured value of the 30pF capacitor to get the result
For the following 2100Ω resistors, the inductance range is 0.01mH-20H at the same time
It takes about two seconds during the test, and large capacitors and inductors will take longer
Other functions include frequency measurement, voltage measurement, square wave generator, PWM
Generator, color selection, debugging calibration, continuous testing and other functions
The frequency range from 1Hz to 1MHz or higher measured at frequencies below 25kHz can display a cycle resolution of 0.001mHz
DC voltage measurement up to 50V
One way is output with square wave signal, multi-range frequency is available, the maximum output frequency is 2MHz
Output a fixed frequency variable duty cycle pulse signal (PWM), the duty cycle adjustable range is 1%-99%
Single capacitance function test, the test mode for continuous measurement of 2uF-50mF capacitors can be directly measured in its circuit (the measured capacitance needs power, and the measured capacitance needs to be fully discharged in the circuit)
Thyristors and thyristors can only identify their pins, and it is also necessary to test whether the trigger current of the thyristor or SCR is less than the current that the tester can provide, and the tester can only provide a maximum trigger current of 6mA
Specifications:
Product:LCR Meter
Shut down
Transistor test
Frequency test
f generator
10-bit PWM
C + ESR @ TP1:3
Continuous measurement of resistance
1- || -3 Continuous measurement of capacitance
Rotary encoder
Self-check
Voltage test
FrontColor
BackColor adjustment
Date of performance
Note:
Please allow minor errors due to manual measurement.
Item color displayed in photos may be showing slightly different since monitors are not calibrated same.
Package Contents:
1pc of Acrylic protective cover shell
or 1pc of Unsoldered tester component kit
or 1pc of Finished product tester
Payment:
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Shipping:
It usually takes about 10-30 working days to arrive for economy shipping which not including tracking number; 7-15 working days for standard shipping which including tracking number. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.
Note: It may takes more than 30 working days to other countries such as Mexico,Brazil,Chile,Peru, because they is far away from China.
PS: We also offer faster shipping service (3-5 days to deliver), such as DHL,EMS, but buyers need to pay for the extra shipping cost. Please contact us if you need it.
Customs Declaration:
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding.
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Only unused, undamaged and original condition item can be qualified for a return.
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