[Amps] .82 ohm

[R.Measures]

On Dec 9, 2004, at 3:37 AM, Tony King wrote:

> Rich hasn't mentioned the good meter protection info on his web site: 
> <http://somis.org/D-amplifiers2.html> topic "Glitch Protection" and 
> this diagram: <http://somis.org/D_a_02.GIF>.
>
> No use having a good meter staring you in the face that is doing 
> nothing ;)

On the RF-out position, the multimeter serves a useful function.  On 
the grid-I position, it doesn't.
>
> 73, Tony W4ZT
>
> At 04:05 AM 12/9/2004, R.Measures wrote:
>
>> On Dec 8, 2004, at 1:52 PM, kwasny wrote:
>>
>>> I considered but did not want to garbage it up to bad but 
>>> considering the
>>> availability of .82 ohm I think that I will use the 12x10 ohms.
>> A SB-220 amplifier will work just a well with a 0-ohm jumper in place 
>> of R3 and it would tune up the same.  .  .  Or, we sell 0.82-ohm 2w 
>> MF resistors for 20¢.  However, the condition that caused the HV+ arc 
>> to ground - which occasionally causes R3 to blow probably should be 
>> addressed --  unless of course you have a free supply of 3-500Zs and 
>> Heath 200uA meter movements.
>>
>>> Darryl - K5WAS
>>>
>>>
>>>> "I would like to get a .82 ohm resister put back in but may test 
>>>> the amp
>>> with a
>>>> jumper. They are mighty scarce around here as are other values. The 
>>>> only
>>>> thing we have in this area are Radioshacks"
>>>>
>>>>
>>>> If all you have is Radio Shack, 12 x 10 ohm 1/2 watt resistors in 
>>>> parallel
>>> would be .83 ohms.  That would be within the normal tolerance of 
>>> resistors
>>> and still be pretty small.
>>>>
>>>> Colin  K7FM
>>>>
>>>
>>>
>>
>> Richard L. Measures, AG6K, 805.386.3734.  www.somis.org
>
>
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>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org