About technologies for your digital home

For beginners and tinkerers

Re-doing 6N11(ECC88) SRPP from eBay

July 18th, 2018
Tweak 6N11 ECC88-SRPP from eBay board top view

  Another project from eBay. It is an assembled 6N11(ECC88) SRPP board. Who are not familiar – a Chinese vacuum tube 6N11(via eBay) is an equivalent of Russian 6N1 (via Ebay). I read somewhere that Russians transferred their tubes technology in 1940s during the hot communism era and friendship time with other  pro-communism countries. Whatever […]

My R-core transformer arrived!

February 8th, 2018
R-Core transformers ... are they worth?

After waiting for a month+ , my R-core transformer finally arrived  🙂 It was well packed to survive a long trip from China. The declared parameters of the R26-09 R-core transformer’s (via eBay) were supposed to be: Primary: 0-115VAC x2; Secondary: 0-220VAC x2 with max total output current of 50mA and and 6.3VAC x2 with the total […]