YosemiteSam
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Do you guys build your own stuff at home? Have an issue and you engineer a way to fix / repair it?
As an engineer, I always enjoy finding and fixing things myself.
I'm a ham radio operator, astronomer, astrophotographer, guitar players, etc. So I have lots of hobbies and therefore end up having lots of issues I end up needing to work though. (that's part of the fun of it all anyhow)
So, show us your DIY work! (fixing, building, etc whatever)
I have several antennas for my ham radio stuff. One of my new antennas causes a lot of common mode current coming back down the antenna feedline. This causes RF noise in my house and messes with my electronis. You can buy an RF choke online for $60-$100, or... You can build one yourself!
This is the one I just built.
Below is a electrical current limiter I'm building for my electronic desk. I build and sometimes repair old electronics. So, you have to be extremely careful when you plug in old 120V AC electronics especially after you've been working on them.
If you plug in a device to 120V AC that has a direct short. You can get 15-20 amps at 120v coming out and exploding in a massive rush of current. That isn't safe. This device you see me assembling here. It uses two 60 watt lightbulbs to limit current to 120 watts at 120v. (ie, 1 amp instead of 15 or 20 amps!)
If the items is shorted, the lightbulbs will light up. If it's not. Only small amounts of current will flow and the lightbulbs won't light up. (or will barely glow)
The light sockets attach to the top where the black rubber grommets are. (the grommets protect the wires from the edges of the metal case)
Sorry I don't have a picture of the finished product. Maybe I will add one later when I get a chance to take a picture of it.
This is a bench top 0-30v 0-3 amp DC power supply. I didn't design it, but it was a kit that you buy and have to assemble yourself. (build and solder)
I already have several commercial version, so I did this just for fun. I ended up giving it to a friend who wanted to get into the electronics fix / build hobby and he needed one.
I also build all my PCs from parts ordered on line with the exception of laptops. You just get a way better PC for a lot less if you build them yourselves.
I will post some more in a bit.
As an engineer, I always enjoy finding and fixing things myself.
I'm a ham radio operator, astronomer, astrophotographer, guitar players, etc. So I have lots of hobbies and therefore end up having lots of issues I end up needing to work though. (that's part of the fun of it all anyhow)
So, show us your DIY work! (fixing, building, etc whatever)
I have several antennas for my ham radio stuff. One of my new antennas causes a lot of common mode current coming back down the antenna feedline. This causes RF noise in my house and messes with my electronis. You can buy an RF choke online for $60-$100, or... You can build one yourself!
This is the one I just built.
Below is a electrical current limiter I'm building for my electronic desk. I build and sometimes repair old electronics. So, you have to be extremely careful when you plug in old 120V AC electronics especially after you've been working on them.
If you plug in a device to 120V AC that has a direct short. You can get 15-20 amps at 120v coming out and exploding in a massive rush of current. That isn't safe. This device you see me assembling here. It uses two 60 watt lightbulbs to limit current to 120 watts at 120v. (ie, 1 amp instead of 15 or 20 amps!)
If the items is shorted, the lightbulbs will light up. If it's not. Only small amounts of current will flow and the lightbulbs won't light up. (or will barely glow)
The light sockets attach to the top where the black rubber grommets are. (the grommets protect the wires from the edges of the metal case)
Sorry I don't have a picture of the finished product. Maybe I will add one later when I get a chance to take a picture of it.
This is a bench top 0-30v 0-3 amp DC power supply. I didn't design it, but it was a kit that you buy and have to assemble yourself. (build and solder)
I already have several commercial version, so I did this just for fun. I ended up giving it to a friend who wanted to get into the electronics fix / build hobby and he needed one.
I also build all my PCs from parts ordered on line with the exception of laptops. You just get a way better PC for a lot less if you build them yourselves.
I will post some more in a bit.