[R-390] AF Deck recap

[David Wise]

The 5814A also has a higher heater current.  It doesn't matter here,
but in series-string applications you can't interchange them.

Dave Wise

>-----Original Message-----
>From: r-390-bounces at mailman.qth.net 
>[mailto:r-390-bounces at mailman.qth.net] On Behalf Of 2002tii
>Sent: Monday, January 09, 2012 7:56 PM
>To: R-390 at mailman.qth.net
>Subject: Re: [R-390] AF Deck recap
>
>Renee wrote:
>
>>I thought a 5814A was a 12AU7A only matched with sections and 
>>reliability....maybe I am in error?
>
>You are absolutely correct.  I was typing faster than I was thinking 
>-- thanks for catching the error!
>
>(Note that the circuit operates the 5814A at only 75 volts and 2.3 
>mA, with a 56k plate resistor -- way, way away from the usual 
>operating point of 10 mA or more with a plate resistor well under 10k.)
>
>Best regards,
>
>Don
>
>