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

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.

Can it be powered with a cable?

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.

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

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.

will it tell me the pin identification?

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

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🔧 Unleash Your Inner Engineer with Precision Testing!

🔋 PORTABLE POWER - Operates on a standard 9V battery for on-the-go testing.
⚡ AUTOMATIC DETECTION - Identifies components without manual input.
⏳ SMART AUTO SHUT DOWN - Conserves battery with a countdown feature.
🌈 COLOR CODED DISPLAY - High-resolution TFT screen for effortless reading.
🔍 MULTIFUNCTIONAL TESTING - Easily test transistors, diodes, capacitors, and more!

The DROK Transistor Tester is a versatile and user-friendly device designed for testing a wide range of electronic components, including transistors, diodes, and capacitors. Featuring a large 1.8" TFT color LCD display, it provides clear readings with color-coded parameters. The tester automatically identifies component types and includes a smart auto shut-down function to save battery life. Perfect for professionals and hobbyists alike, this tool is powered by a standard 9V battery, making it ideal for both lab and field use.

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Brand	DROK
Power Source	Battery Powered
Style	Voltage Tester
Item Weight	4 Pounds
Min. Operating Voltage	9 Volts
Upper Temperature Rating	85 Degrees Celsius
Manufacturer	DROK
Item model number	300427
Item Weight	4 pounds
Package Dimensions	6.77 x 4.33 x 1.5 inches
Voltage	9 Volts
ASIN	B01MS1FOYM
Is Discontinued By Manufacturer	No
Date First Available	December 27, 2016

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

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