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Ed_Dinning · 11th Nov 2020, 8:26 pm

Hi Richard, back on the 1155 PSU, I have seen an AM unit that used the LcL configuration and I'm sure the first choke was a swinging type.

Some earlier users of 1155's reported that it was useful to be able to vary the HT voltage over a small range as an aid to reducing frequency drift, I've never tried to verify this

Ed

11th Nov 2020, 8:26 pm	#48
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,196	Re: R1155 Modern Power Supply Hi Richard, back on the 1155 PSU, I have seen an AM unit that used the LcL configuration and I'm sure the first choke was a swinging type. Some earlier users of 1155's reported that it was useful to be able to vary the HT voltage over a small range as an aid to reducing frequency drift, I've never tried to verify this Ed