Chinese toys

[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.

[kt315]

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

[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]

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

[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.

[Andi68]

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

[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

[kt315]

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

[kt315]

[kt315]

my T12.

[homefire]

Well Damn ! I paid $20.00 for two of these in kit form... Now they can be had for $5.00 more assembled and you even get a Real Probe and not the stupid gator clip crap. LOL



They're sure not a Tektronix but work dang good for a pile of stuff. https://www.banggood.com/Original-JY...r_warehouse=CN

[kt315]

moded to simply a counter. its easely. just put SMD resistor in a track severing. desolder caps. change C6 on 1-10uF.

[6666]

Should have called it a gating led, it blinks when the circuit is being correctly gated, so it counts correctly.

[Tibuck19]

I got one, check it with a known freq source to get used to the freq display, also it has a clocking led that needs to be blinking with the input signal

Hummm Not sure what you mean by the blinking clock led, and I don't have another Freq counter besides that one, However I had measured the freq of my TGSL could and it was bang on with the TX should be at.

[6666]

I had bought one of these https://www.ebay.ca/itm/1Hz-75MHz-Fr...kAAOSwkQxa1aXz

I ended up making this for it. https://www.thingiverse.com/thing:2828641

I got one, check it with a known freq source to get used to the freq display, also it has a clocking led that needs to be blinking with the input signal