Chinese toys

[kt315]

[kt315]

https://www.banggood.com/Original-JY...r_warehouse=CN
Dual Channel.

[WM6]

- portable 1MHz digital storage oscilloscope kit (1channel)
- spectrum analyzer
- frequency meter till 10MHz
- trigger output to synchronize with additional scopes to get 2 or multi synchronized channels scope:

https://www.amazon.com/Luxury-Oscill...eld-06204KP%2F

[Andi68]

https://www.ebay.de/itm/LCR-T4-Mega3...53.m1438.l2649

[homefire]

Have one. Work quite well Not so good with Higher Resistance Coils. Report BAD or DEFECTIVE. LOL They do work for most coils I've tested.

[kt315]

gold scanner. depth 20m range 1000m https://www.banggood.com/AKS-PLUS-Ha...r_warehouse=CN

[rickb]

It's an educational device. It teaches the suckers not to believe that cr4p. But, sad to say, some are very slow learners. Witness the number of bottom feeders on the lrl forum.

[kt315]

received the tester. pics https://www.geotech1.com/forums/album.php?albumid=113

[dbanner]

Transistor tester hfe/ npn/ pnp. Good for matching transistors , although I don't see need to in hobby application for metal detectors. Maybe useful for audio amplifiers and such, with complimentary pairs.

[dbanner]

received the tester. pics https://www.geotech1.com/forums/album.php?albumid=113

Looks good.

[kt315]

every vintage detector needs ESR checking of all electrolitics. you can not be out from this tester. also no way to check a mosfet by ordinary tester.
you have to see the advantages. https://twitter.com/jburdeezy/status...12564980301826

[dbanner]

Nobody checks ESR of small voltage, cheap electrolytic capacitors in old metal detectors. They simply replace them with new ones as good best practice, including all tantalum. MOSFET transistor have predictable signs that they are compromised.
Fancy tester is luxury not necessity.
Before installing new capacitors, check each one against the other of same value for suspect defective one, it will show up as anomaly on ordinary multimeter.

[kt315]

if you are so mindcontrol find out a problem on this PCB http://ipic.su/img/img7/fs/CIMG6443.1550232208.jpg

somebody took being teaching me here... with experience from 15 years old in electronics. BTW i am now 57 -!!!!

[Andi68]

You can always use this tester.
Very handy for J-Fets, Mosfets, Transistors-just plug in and check.
Also good for parts that should be used again from old boards
And even with new Elkos the ESR can be different

[dbanner]

if you are so mindcontrol find out a problem on this PCB http://ipic.su/img/img7/fs/CIMG6443.1550232208.jpg

somebody took being teaching me here... with experience from 15 years old in electronics. BTW i am now 57 -!!!!

I never said the device was useless, I said it was not absolutely necessary, nice to have but hardly ever used in real troubleshooting.
Luxury not necessarily indispensable. See?