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Power Tube grid resistor.

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Cups

Post subject: Power Tube grid resistor.

Posted: Mon Oct 18, 2010 7:16 pm

Novice

Joined: Wed Jan 30, 2008 3:34 pm
Posts: 141
Location: Manitoulin Island, Ontario

Does it need to be a power resistor? Couldn't I get away with a 1 watt or 1/2 watt 1K5 instead?

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Stoo

Post subject: Re: Power Tube grid resistor.

Posted: Mon Oct 18, 2010 11:26 pm

Experienced

Joined: Sat Jul 22, 2006 2:59 pm
Posts: 480
Location: Vancouver B.C. Canada

Yes, a low power resistor is sufficient. The currents flowing in the control grid are miniscule.
Stew
PS I'm talking control grid here..for the Screen grid you want 3 or 5 watters. Some will specify flame proof types for the screen.

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kurtlives

Post subject: Re: Power Tube grid resistor.

Posted: Tue Oct 19, 2010 8:14 am

Expert

Joined: Sun Feb 17, 2008 4:47 pm
Posts: 960
Location: Toronto, Canada.

Grid stoppers are usually big like that for stability reasons/heat.

_________________
http://pdfelectronics.com

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