10-30-2014, 06:42 AM
Arran
Thanks. I just visited Edcor's site. Unfortunately, I did not see anything that would work well without some modifications. The smallest Edcor transformers I found that I thought might work have a larger footprint than the Hammond 270DAX and, therefore, might not physically fit on the 720 chassis. The Hammond 270DAX has the same footprint as the original transformer.
I will, however, keep an eye out for a junk set of some other brand.
It looks like what makes this set draw more B+ current compared to six-tube Philco domestic sets are the two 7B5 tubes connected in push-pull. Six-tube Philco table models intended for sale in the USA such as the 41-240, 42-345, 40-140, and others have a single ended output, and their power transformers are only rated at 45 to 55 mA HV DC output.
Sam - check your PM. I could use a 41-240 for other parts.
Thanks. I just visited Edcor's site. Unfortunately, I did not see anything that would work well without some modifications. The smallest Edcor transformers I found that I thought might work have a larger footprint than the Hammond 270DAX and, therefore, might not physically fit on the 720 chassis. The Hammond 270DAX has the same footprint as the original transformer.
I will, however, keep an eye out for a junk set of some other brand.
It looks like what makes this set draw more B+ current compared to six-tube Philco domestic sets are the two 7B5 tubes connected in push-pull. Six-tube Philco table models intended for sale in the USA such as the 41-240, 42-345, 40-140, and others have a single ended output, and their power transformers are only rated at 45 to 55 mA HV DC output.
Sam - check your PM. I could use a 41-240 for other parts.
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Ron Ramirez
Ferdinand IN
