Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

Re: caps...rated at 660VAC, will they withstand 950VDC?!

Posted by dave slagle on November 1, 2001 at 09:26:03:
the "2 * 1.4 * ac" comes from the total max difference P-P of the rms AC waveform... so a cap with 660VAC RMS will actually have a max potential P-P difference of 1848V you have to realize that that potential only exists for a fraction of time, and not continuosly like DC so some caution is needed...
i have run some 370VAC caps at 1KV and they do tend to short, but thats right at the edge of that 2.8 number... i suspect the 660VAC caps should be OK for the voltages you want... make sure the whole thing is fused properly, and make sure the cans are attached to ground... i think the 1.4 number is a safe one.. it gives you a factor of 2 for "derating" and of course if possible do as vry says and check with the manufacturer....
dave