If you found an old tube transformer in good condition and also a rectifier tube, you can assemble the simple source that we found in a 1941 documentation. 10W). Electrolytics are for high voltage according to the used transformer.

If you found an old tube transformer in good condition and also a rectifier tube, you can assemble the simple source that we found in a 1941 documentation. 10W). Electrolytics are for high voltage according to the used transformer.