[Amps] 1N Diodes

Alek Petkovic vk6apk at bigpond.com
Wed Jun 30 20:08:40 EDT 2021


NO!. Leave the higher voltage rated diode/s in there. Don't go backwards 
and risk it failng again.

As Lou said, be safe and stick 1N5408s in there. They do NOT affect any 
thing else in the amp. They just have a much higher rating and safety 
factor.

73, Alek, VK6APK

On 30/06/2021 11:31 pm, Mark - N5OT wrote:
> Thanks everyone,
>
> I think I will leave the 1N4003 in there for the time being, but when 
> I find a 1N4001 I'll set it aside for the next time I open the box.
>
> 73 - Mark N5OT
>
>
> On 6/30/2021 9:26 AM, Dan Michnay wrote:
>>
>> I ran into trouble replacing a 4002 with a 4007 some years ago. It 
>> was in a switching power supply. The reverse recovery time increases 
>> significantly as you go from the 4001 to the 4007. I don't know if 
>> that is significant in your application but it is true
>>
>> Dan K9EA
>>
>> On 6/30/2021 9:50 AM, Mark - N5OT wrote:
>>> So I put it in and the meters work like they're supposed to.  Just 
>>> worried if it affects the overload circuit. However, the amp is 
>>> running very acceptably.  25ma of Grid current at 1500 watts out.
>>>
>>> On 6/30/2021 7:34 AM, Mark - N5OT wrote:
>>>> Ameritron AL800H - two 3CX800s
>>>>
>>>> Meters have always behaved badly.  Manual says when this happens, 
>>>> then D117 may be shorted.  I have the amp opened, and this diode 
>>>> tests shorted.
>>>>
>>>> Manual says this diode "protects the overload circuit and the meters."
>>>>
>>>> It's a 1N4001.  I can't find any around here.  I have about 1x10E18 
>>>> 1N4003 diodes.  Can I use a 1N4003?
>>>>
>>>> Thanks in advance.
>>>>
>>>> 73 - Mark N5OT
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