Jump to content
The Klipsch Audio Community
Edgar

Note to Self ...

Recommended Posts

Note to self:

 

If you charge an electrolytic capacitor on Wednesday, it will still hold enough charge on Friday to arc-weld the screwdriver that you accidentally short across its terminals. :(

Share this post


Link to post
Share on other sites

In the far distant past, I worked a a TV station in central Illinois. The assinstant chief engineer would go into the workshop and take a huge cap out of the box and use clip leads to connect the cap to the 115 vac. It would quickly charge, and he would put it back in the box.Later, the chief would come in and grab the box, open the top, where the solder tabs were located... and slide it out onto his palm. BAM!! You just know that had to hurt.

  • Haha 1

Share this post


Link to post
Share on other sites
23 minutes ago, Marvel said:

In the far distant past, I worked a a TV station in central Illinois. The assinstant chief engineer would go into the workshop and take a huge cap out of the box and use clip leads to connect the cap to the 115 vac. It would quickly charge, and he would put it back in the box.Later, the chief would come in and grab the box, open the top, where the solder tabs were located... and slide it out onto his palm. BAM!! You just know that had to hurt.

 

I did something similar when i replaced points and condenser on older vehicles, a bit of charge and leave the stuff on a workbench and the new guys never knew what hit them.

 

 

  • Like 1

Share this post


Link to post
Share on other sites

In my case I did it to myself. I know better. A moment's inattention and, as @Marvel said: "BAM!!"

Share this post


Link to post
Share on other sites

Did it leave a mark?:) Cap ruined? Screwdriver?

Share this post


Link to post
Share on other sites

Caps charged with AC....Hmmmm..so does the arc go in both directions?

Share this post


Link to post
Share on other sites

In high school I worked for the science department... the other guys (never me) connected a van de Graaf generator to a steel door and called one of the other student techs... BAM, blew the heel off his shoe. Lucky they didn’t kill him. 

Share this post


Link to post
Share on other sites

Not shocking but..... Had/have an old friend who was very inquisitive. Used to wind his own Tesla coils. How freaky it was, just pickup a florescent tube and walk around with it. It would light up using your body as the ground. And you couldn't feel anything. Weird.

Share this post


Link to post
Share on other sites
16 minutes ago, babadono said:

Did it leave a mark?:) Cap ruined? Screwdriver?

 

None of my skin was involved in the incident. :smile: Thanks for your concern.

 

Cap seems OK. It is a power supply cap in a medium-power amplifier that I am rebuilding, so it was only charged originally to 46VDC. After two days it was probably down to 20V, which was still enough to put on a good display of sparks.

 

I have other screwdrivers.

Share this post


Link to post
Share on other sites
2 hours ago, Edgar said:

Note to self:

 

If you charge an electrolytic capacitor on Wednesday, it will still hold enough charge on Friday to arc-weld the screwdriver that you accidentally short across its terminals. :(

cuckoosest.png

  • Haha 1

Share this post


Link to post
Share on other sites

I didn't know that Jack Nicholson rebuilt amplifiers! :wink:

Share this post


Link to post
Share on other sites
3 minutes ago, Edgar said:

I didn't know that Jack Nicholson rebuilt amplifiers! :wink:

but Juck liked using electrolytic capacitors

 

d8f21d18e00c59b3dfc86c27707cb456.jpg

Share this post


Link to post
Share on other sites
41 minutes ago, dirtmudd said:

cuckoosest.png

I attended several electroconvulsive treatments long ago. They do sedate the patient but the procedure itself looks pretty rough. But they woke up happier.

Share this post


Link to post
Share on other sites
46 minutes ago, Bosco-d-gama said:

I attended several electroconvulsive treatments long ago. They do sedate the patient but the procedure itself looks pretty rough. But they woke up happier.

 

It's a good thing they used happy electrons instead of sad ones.

JJK

Share this post


Link to post
Share on other sites
2 minutes ago, JJkizak said:

 

It's a good thing they used happy electrons instead of sad ones.

JJK

They do ECT to treat depression. Unsure how or why it works....... but it does. I was just there ‘in case’ something went sideways.

Share this post


Link to post
Share on other sites
1 minute ago, Bosco-d-gama said:

They do ECT to treat depression. Unsure how or why it works....... but it does. I was just there ‘in case’ something went sideways.

 

I was just a funnin you.

JJK

  • Thanks 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...