Thursday, March 29, 2018 - 10:09 PM
Description: My brother and I are building a FM tuner with a Phillips FM1216ME_MK3 tuner module and 6H30 tube output buffer. The finished design have a nice sound and seems...
Sunday, August 13, 2017 - 9:39 PM
Description: My brother and I have build a preamplifier with 6H30 double triode in SRPP mode. We have chosen the same design we used in our tuner as we like...
Tuesday, June 5, 2012 - 2:35 PM
Description: My brother has build a advanced version of his shooting trainer: The hardware are improved on the following areas: a) a large clear blue/white back lit LCD display, b)...