EZM328 GM328R LCD Digital Transistor Tester ESR Frequency LCR NPN PNP Diode Capacitor Meter PWM Squarer Wave Genera Meas

Features Rotary coding switchRotating menuFrequency meter interfacePrecision reference source Overview 1 Micro controller uses 8MHz external crystal the measurement accuracy is better 2 Affect the accuracy of the relevant resistance using a thousandth of a metal film resistors and the remaining one percent is also used metal film resistors 3 LCD using 12864 LCD screen that can display measured data and graphics 4 Main chip dual in line and with a socket ideal for electronics enthusiasts upgrade or replace the chip 5 Uses 9V laminated battery 6 All components are made of high quality genuine LCD screen for low power backlit screen the backlight current of about 2mA so after boot time has backlighting for easy use in the dark 7 Dimensions 72 x 85 x 22 mm8 The Working Current 9V voltage stable operating current of about 20mA Basic Function 1 One button operation automatic shutdown 2 Shutdown current is only about 20nA 3 Adopt 8MH crystal 4 Can automatically detect NPN PNP bipolar transistors N channel and P channel MOS FET JFET diodes dual diode thyristor small power unidirectional and bidirectional thyristor 5 Automatic identification pin arrangement of components 6 Current amplification factor and base measuring bipolar transistor emitter threshold voltage 7 Can be extremely via the base emitter threshold voltage and high current amplification factor identification Darlington transistors 8 Protection diodes can detect bipolar transistors a