Hobby Electronics Basics

Where to download FREE manuals for newer electronics?

Most of the manuals for the very old electronics, especially tube gear, can be gotten online for free. But I am looking...

9 comments posted 8yrs

posted by oldschool

9 comments posted 8yrs posted by oldschool

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

Humor: Aulterra EMF Radiation Neutralizing Whole House Plug

This company claims to have a plug that you plug into an electrical receptacle in your house and it is supposed to neut...

4 comments posted 8yrs

posted by default

4 comments posted 8yrs posted by default

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

Looking for a good way to compare CR2450 batteries

I use enough CR2450 coin cells in equipment in my shop that I think it makes sense to test a few brands against each ot...

7 comments posted 8yrs

posted by etpm

7 comments posted 8yrs posted by etpm

dying trees

As is seasonally traditional, we recently had a dying tree in our house the tree had no roots, the base of the trunk sa...

19 comments posted 8yrs

posted by jasen

19 comments posted 8yrs posted by jasen