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Yeah who needs fuses?
Current limit with the power company.
Hello? Yes this is NUKE STATION #6, yes this is SM2EKM I'm coming on line,
pull the rods out.
-----Original Message-----
From: ham_amplifiers@... [mailto:ham_amplifiers@...]
On Behalf Of Jan Erik Holm
Sent: Tuesday, November 07, 2006 11:57 AM
To: ham_amplifiers@...
Subject: Re: [ham_amplifiers] L-4B parasitic supressors
Bob,
I think I ditched the idea with a fuse. What the heck,
if my 8171 box doesnt have a fuse why bother with this
toybox.
73 SM2EKM
-------------
Robert B. Bonner wrote:

Jim,

If you think you need a B- fuse, put a 500 ohm 10-25 watt resistor across
the fuse incase it opens. You should also have a 100-200 Ohm 25 watt B-
lead to ground in the power supply and the 1 ohm grid metering resistor in
the head. That way things dont "run wild" if the fuse opens.

My large projects have 5 ohm 100 Watt glitch resistors in the PS.

What's a parasitic suppressor? OH no...
BOB DD

-----Original Message-----
From: ham_amplifiers@...

[mailto:ham_amplifiers@...]

On Behalf Of Jan Erik Holm
Sent: Monday, November 06, 2006 9:03 AM
To: ham_amplifiers@...
Subject: [ham_amplifiers] L-4B parasitic supressors

Im working on fixing up a L-4B, it has fried resistors
in the supressors. They use 3 x 15 ohms but I have none
in my junkbox however I have plenty of 10 ohm Rs, will
that do? 3 x 10 ohm Rs?
It doesnt seem to matter too much, I notice that the L-7
use 2 x 47 ohm Rs and the Henry 3K 2 x 150 ohm Rs, it
seems to be all over the place.

Im following VE7RFs advice to ground grid pins with
wide straps. Suppose I have to put in a fuse in the B-
return to be safe. Also Im swapping out the .82 R in
the PS for a better glitch R, also I put diodes across
the I meter.
Anything else I should think about?

73 Jim SM2EKM