Question 1

I am trying to measure a inductor and it keeps coming back with a resistance.  How do I fix this?

Accepted Answer

I found out that the tester can’t measure inductance below 10uH. It helps to buy a pack of inductors of various values to always check the tester. This is how I found out that mine cant’ measure inductors below 10uH.

Question 2

Can it be powered with a cable?

Accepted Answer

I did a simple mod in order to power it from a basic 9vdc power supply l. I simply installed a standard 12mm polarised jack into the case  (theres a slot in the top center of the pcb to allow room) and use a currwnt limited wall wart or bench top piwer supply for the required 9 volts  (solder the 2 wires from the jack  to the battery terminal connections on the pcb matching polarity). Mine has worked a charm and no worries plus you have the option of using either power source. If you would like to know more on this mod reply and I will supply you with a more detailed step by step with photos.

Question 3

will this tester work with germanium transistors? also, does it report transistor leakage?

Accepted Answer

I haven't found a germanium transistor to test yet, but I have tested Ge small-signal diodes with mine, so I'm fairly certain this tester can properly identify and test Ge teansistors as well.   If so, it will show the device type (PNP/NPN), ID the leads (BCE), and show the hfe (gain), but it will not show a leakage current value.
   The primary diference between Ge and Si devices is the difference in the voltage drop across a forward-biased junction. Ge junctions show a 0.3 - 0.4v drop, and Si junctions show 0.6 - 0.7v.

Question 4

will it tell me the pin identification?

Accepted Answer

With in reason.  You will need the spec sheet, say you have a bad unit, it may identify it as two diodes and you know it is not two diodes, it is a 222.  So YES it will / it has done it correctly for me on good devices, on devices that fail, it may show unknown device or something like a mess of diodes  or something else.  Nothing the spec sheet would show.  hope this helps.  I also use a Heathkit transistor tester so I can supply a load.  If you are working with hard to replace /find items, I suggest you also get something that will supply a real load so you can see if it breaks down after 2 minutes or something like that.  hope this helps,  I am pleased with cost vs use I have gotten.  SO far so good.  Get used to getting the pins in 1 2 3 any way, but 1,2,3.   George

ASIN	B01MS1FOYM
Best Sellers Rank	#358,501 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #34 in LCR Meters
Brand Name	DROK
Compatible Devices	Transistors (NPN, PNP), MOSFETs (N-channel, P-channel), Diodes, Thyristors, Resistors, Capacitors, Inductors, MOS, SCR, ESR meters
Customer Reviews	4.4 4.4 out of 5 stars (1,058)
Item Weight	4 pounds
Manufacturer	DROK
Measurement Type	LCR Meter
Minimum Operating Voltage	9 volts
Model	Transistor Tester
Number of Items	1
Number of Packs	1
Part Number	300427
Power Source	Battery Powered
Style Name	Voltage Tester
Unit Count	1 Count
Upper Temperature Rating	85 °C

DROK Transistor Tester LCR Meter, Mosfet Transistor Capacitor Tester, Mega328 NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector

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