Hobby Electronics Basics

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How do I dial these phones

I hope this is the right place to ask this. My mom gave me head phones for Christmas. They dont look like any other pho...
0 comments posted 8yrs
posted by blondie27d
0 comments posted 8yrs posted by blondie27d

Removing battery corrosion

I got an old AM-FM pocket transistor radio which looked good and clean till I opened the battery compartment. Very corr...
19 comments posted 8yrs
posted by oldschool
19 comments posted 8yrs posted by oldschool

Re: China Capacitors are Radioactive

>>> >>> >>> >>> >>> > I learned today that there are places where people live and >>> > are exposed to dose rates of th...
10 comments posted 8yrs
posted by jjlarkin
10 comments posted 8yrs posted by jjlarkin

driving a 1000 mW laser diode

I want to power a laser diode (the kind used for engraving) in a portable device for short periods with a 9V battery. T...
1 comments posted 8yrs
posted by fritz
1 comments posted 8yrs posted by fritz

Will Deoxit on a circuit board cause problems?

Will Deoxit on a circuit board cause problems? In other words, is it conductive if it's touching components? I had to s...
3 comments posted 8yrs
posted by oldschool
3 comments posted 8yrs posted by oldschool

True RMS multimeter?

I bought an Excel XL 830L multimeter with the understanding that it was a RMS voltmeter. I also have UEI ElectroMate DM...
21 comments posted 8yrs
posted by andrewkennedy775
21 comments posted 8yrs posted by andrewkennedy775

Thanks for the ferrite advice

I just wanted to say thanks for the advice on my ferrite filter question. Since the machine is working with my washer k...
0 comments posted 8yrs
posted by etpm
0 comments posted 8yrs posted by etpm

Converting Large Vessels To Na-S Battery Electric

Knowing ship owners are the cheapest folk on the planet, it's 100% certain similar calculation have been done before: V...
11 comments posted 8yrs
posted by bretcahill
11 comments posted 8yrs posted by bretcahill

Motion detector

I am looking to build a motion sensor. https://www.jameco.com/z/VMA314-Velleman-Passive-Infrared-PIR-Sensor_2245440.html...
8 comments posted 8yrs
posted by andrewkennedy775
8 comments posted 8yrs posted by andrewkennedy775

Ferrite filter question

Reecently I helped a neighbor connect a Chinese made CNC plasma table to an American made plasma cutter. After I figure...
4 comments posted 8yrs
posted by etpm
4 comments posted 8yrs posted by etpm

Soldering kit

I have been soldering for a lot of years, but all I had was a single 30W temp iron and no desolder gun. My new kit will...
16 comments posted 8yrs
posted by andrewkennedy775
16 comments posted 8yrs posted by andrewkennedy775

Can someone translate this ? Russian to English

Hi to all. College of mine bought some Chinese motor controller but i can get any addition infos on Chinese site. Lucki...
11 comments posted 8yrs
posted by notmy
11 comments posted 8yrs posted by notmy