PSU for valves

Phil Allison wrote:
> RheillyPhoull wrote:
> 
> ============
>>
>>> Read this one <http://education.lenardaudio.com/en/14_valve_amps_6.html>
> 
> ** Then forget it.
> 
> Even worse overkill than the lab supply.

But I'll have the fun (let's hope) of building it myself.

-- 
When, once, reference was made to a statesman almost universally
recognized as one of the villains of this century, in order to
induce him to a negative judgment, he replied: "My situation is
so different from his, that it is not for me to pass judgment".
Ernst Specker on Paul Bernays

On Saturday, February 20, 2021 at 3:59:05 AM UTC+11, Peter wrote:
> Phil Allison wrote: 
> > RheillyPhoull wrote: 
> > 
> > ============ 
> >> 
> >>> Read this one <http://education.lenardaudio.com/en/14_valve_amps_6.html> 
> > 
> > ** Then forget it. 
> > 
> > Even worse overkill than the lab supply.
> But I'll have the fun (let's hope) of building it myself.

**  Building what ? 

Did you even read the page at all  ? 

The author is Australian and known to me, he has long history of being a crank. 

So you have a pal. 


.....   Phil 

Peter wrote:
> RheillyPhoull wrote:
>> On 18/02/2021 9:23 am, Peter wrote:
>>> Phil Allison wrote:
>>>> Peter wrote:
>>>> ------------------
>>>>> I thought I'd experiment with a few valve circuits (just for fun). So
>>>>> I'll need an H.T. power supply and I'm looking at this:
>>>>>
>>>>> https://www.timstar.co.uk/el120300-high-tension-ht-power-supply.html
>>>>> It supplies up to 300V at 60mA. My question is, is 60mA sufficient?
>>>>> -
>>>>
>>>> ** That is clearly a regulated lab supply for experiments in physics.
>>>>      Major overkill for playing about with tube circuits.
>>>>      Expensive too.
>>>
>>> Can you recommend an alternative?
>>>
>>>> ......   Phil
>>>>
>>>
>>>
>> Hey Pete,
>> Read this one&nbsp; <http://education.lenardaudio.com/en/14_valve_amps_6.html>
> 
> Thank you.&nbsp; That's really helpful.&nbsp; Looking at the first circuit 
> diagram, any thoughts about the value of the pi filter choke?&nbsp; Also, 
> looking at the second circuit diagram, the swinging choke is marked 20H, 
> but the smoothing choke has no value given.&nbsp; Any thought about that?
> 

Thank you for your email.  I tried to reply to it, but my reply bounced.


-- 
When, once, reference was made to a statesman almost universally
recognized as one of the villains of this century, in order to
induce him to a negative judgment, he replied: "My situation is
so different from his, that it is not for me to pass judgment".
Ernst Specker on Paul Bernays