How many amps input from a 9v power supply is ok. ie. 0.6amp, 1.0 amp, 1.5 amp ???

I don't know because mine had a floating input on U1 and that caused overheating of U1 until it ceased to work. I had an open pull up resistor, R24 10kΩ, that caused the input to float when the rotary encoder, SW6, happened to be in the open state . My DSO Model 150 pulls the voltage down on a 9V alkaline battery from 9.37V to 8.66V when it should have been about 9.3V. You might try a 9V battery and see how much it pulls down the voltage. From the discharge curves at various loads on a 9V alkaline battery, I would say that the DSO should require <0.05A.

is ok for car testing

I am not sure what your asking? I wouldn't use it to test engine timing or anything around it since its a 12v system. This oscilloscope can only handle 3 - 5 volts. You would need to get probes that can handle higher voltages.

Will this measure AC line voltage such as a generator output?

Sure, but you would need a 1x/10x probe . WARNING: AC line testing can be dangerous! Only proceed if you have experience and/or training. Thanks

If i got a better probe, would i be able to test a 50v 200a dc welder output? if so, what kind of probe would i need?

just use a multimeter on 200 Vdc range.

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JYETech 'DSO Shell' DIY Oscilloscope Kit w/Housing and Probe by NooElec. Low Cost Digital Storage Scope with 2.4 Inch LCD Display Model DSO150, DSO 150, 15001K

JYETech 'DSO Shell' DIY Oscilloscope Kit w/Housing and Probe by NooElec. Low Cost Digital Storage Scope with 2.4 Inch LCD Display Model DSO150, DSO 150, 15001K

Q: is ok for car testing

I am not sure what your asking? I wouldn't use it to test engine timing or anything around it since its a 12v system. This oscilloscope can only handle 3 - 5 volts. You would need to get probes that can handle higher voltages.

Q: Will this measure AC line voltage such as a generator output?

Sure, but you would need a 1x/10x probe . WARNING: AC line testing can be dangerous! Only proceed if you have experience and/or training. Thanks

Q: If i got a better probe, would i be able to test a 50v 200a dc welder output? if so, what kind of probe would i need?

just use a multimeter on 200 Vdc range.

Product ID: 55093848

📺2.4" TFT LCD (320x240) display

🔧DIY kit with mostly pre-assembled motherboard

⚙️Rotary optical encoder for smooth navigation

Description

⚡ DIY your way to precision — the oscilloscope that means business!

CRYSTAL CLEAR VISUALS - Vibrant 2.4" TFT color display ensures precise waveform analysis at a glance.
TRUSTED QUALITY SUPPORT - Factory-tested PCB 'E' revision with 24/7 multilingual support and warranty—no compromises.
ENHANCED SENSITIVITY RANGE - From 5mV/div to 20V/div, capture signals with professional-grade accuracy.
EFFORTLESS PARAMETER CONTROL - Rotary encoder lets you tweak settings quickly without fumbling through menus.
BUILD YOUR OWN BENCH ESSENTIAL - Assemble a fully functional oscilloscope with included clip probe and molded plastic enclosure—perfect for hands-on pros.

The JYETech DSO Shell (DSO150) is a low-cost, DIY digital storage oscilloscope kit featuring a sharp 2.4" TFT LCD, rotary encoder for intuitive control, and improved sensitivity from 5mV/div to 20V/div. It comes with a durable molded plastic enclosure and clip probe, mostly pre-assembled motherboard, and comprehensive documentation. Ideal for professionals and hobbyists seeking hands-on electronics measurement with reliable factory-tested quality and dedicated support.

Specifications

ASIN	B076HD5862
Best Sellers Rank	#855,426 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #370 in Lab Oscilloscopes
Date First Available	October 16, 2017
Item Weight	6.3 ounces
Item model number	DSO150 (DSO Shell, 15001K)
Manufacturer	NooElec Inc.
Product Dimensions	5.91 x 1.18 x 3.94 inches

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