Transistor Tester Multimeter

The output current of the tester is 6mA/voltage <5V. High-power IGBTs, thyristors, and Darlington tubes that require higher current/higher voltage drive may not be measured. Air core coils and power inductors cannot directly measure inductance. It is recommended to try series connection. For an appropriate color ring inductance test, capacitors below 20pF, it is recommended to test a 20pF capacitor.

Transistor tester: Automatic detection of NPN and PNP bipolar transistors, N-channel and P-channel MOSFETs, JFETs, diodes (including double diodes), N. and P-IGBTs, resistors, inductors, capacitors, thyristors, triacs, and batteries (0.1-4.50V). Automatic detection of zener diodes (0.01-20V) with self-test and automatic calibration.

IR decoder: Support for Hitachi IR coding with IR waveform display.

Other features: Measurement results displayed using TFT graphic display (160×128). Auto Power Off (Timeout Settable). Built-in rechargeable Li-ion Battery with Li-ion Battery voltage detection on a 160×128 TFT display.

Warnings: Built-in Li-ion Battery. It is strictly prohibited to immerse the tester in water or place it near a heat source. For your personal safety, strictly comply with the use of Li-ion Battery specifications and precautions.

Power on: In the power-off state, short press the multifunction key to turn on the tester and automatically measure.

Detect transistor: In the power-off state or after the test is completed, place the test element into the transistor test area of the test seat, press the locking handle, and short press the multifunction key to automatically measure. Graphical display of measurement results when testing is complete.

Warning: Always discharge capacitors before connecting them to the tester! The tester may be damaged before you switch it on!

Detect Zener Diode: When the device is turned off or the test is completed, put the Zener diode into the Zener diode test area, press the locking handle, and briefly press the multi-function button.

Note: Do not put components in the Transistor test area, otherwise, the Zener diode cannot be tested!

IR decoder: After the component test is completed, point the infrared remote control at the “IR” test hole of the tester, press the remote control button, and the tester will display the user code and data code after successful decoding, along with the corresponding infrared waveform.

If decoding fails, the user code and data code cannot be displayed. At this time, if you are in the tester interface, you cannot enter the infrared decoding interface. If you are in the infrared decoding interface, the last successful decoding information will still be displayed.

Note: This decoder only supports infrared encoding in Hitachi format. Other formats of infrared encoding are not supported.

Automatic calibration: Short-circuit three test sockets, short press the multifunction button, and the tester will automatically calibrate. During the calibration process, follow the prompts to disconnect the short wire.

Shutdown: Automatic shutdown after timeout. When the component test is completed or the infrared decoding is completed, and the automatic shutdown time is reached, the tester will automatically shut down (overtime 30 seconds). Standby power consumption is 0 µA after shutdown.

Battery voltage measurement: Before each component measurement, the built-in lithium battery voltage will be detected and displayed. When the battery voltage is less than 3.1V, it will be forced to shut down. Please charge it at this time.

Battery charging circuit: The charging interface is a standard Micro USB interface. Please use an external 5V power supply or USB power supply for charging.

Note: When the charging indicator is red, it means charging, and green means charging is complete.

FAQ: Question: Cannot power on Cause: Lithium battery is low Solution: Please charge until the light turns green.

Inaccurate measurements: Please recalibrate.

Known errors and unsolved problems:

1. The current amplification factor of germanium transistors can be measured too high because of the high residual current. In this case, the base-emitter voltage will be very low.
2. The capacity value in the reverse direction for Power Schottky Diodes such as MBR3045PT cannot be measured if only one diode is connected. The reason is the too big residual current of this diode. Sometimes the measurement is possible by cooling down the device (with cooling spray, for example).
3. The diode function of a triac gate cannot be examined.
4. The Source and Drain pins cannot be detected correctly with JFETs. The reason is the symmetrical structure of these semiconductors. You can notice this problem with the electric layout, that the display shows the same layout with the same parameters if the Source and Drain pins are swapped.
5. The output current of the tester is 6mA/voltage <5V. High-power IGBTs, thyristors, and Darlington tubes that require higher current/higher voltage drive may not be measured. Air core coils and power inductors cannot directly measure inductance. It is recommended to try series connection. For an appropriate color ring inductance test, capacitors below 20pF, it is recommended to test a 20pF capacitor.