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: Plate choke current capability

Posted by dave slagle on January 10, 2017 at 17:22:44:
You really need to give some more info about the choke and the circuit it is going into in order for a fair assessment to be made.

What is the Rp of the tube it will be loading?
What is the inductance of the choke?
What is the maximum AC voltage at the lowest frequency of interest?

If the choke is intended for parafeed output you may be fine but putting the possible 1100Vdc insulation issues aside that high of a voltage suggests you may also have the possibility of fairly High AC voltages and that AC on top of the 80maDC could very well saturate the plate choke at low frequency signal peaks.

The easiest way to check this is with a signal generator and scope since magnetic saturation is easily visible on a sine wave.

dave