Quote:
Originally Posted by Ed_Dinning
Hi Richard, yes an 1155 on its own does not need DC heaters.
The swinging choke technique is described in the various amateur radio hand book as helping to stabilise the EHT rail. I would be interested if you could run a simulation on it .
Typical choke is 5 to 20H at 20 to 200mA
Ed
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Ed,
well I will certainly give it a go. I will firstly look at some of my old amateur radio handbooks and see if I can see this technique described. I've not seen it in any equipment as far as I can recall.
Just to check your swinging choke spec......its 20H at 20mA, and 5H at 200mA?
Richard
Richard