ruffrecords
Well-known member
The Carnhill VTB2291 should do very well. It is a gapped type so it is able to pass some dc. How much is anyone's guess but it is probably more than the few mA needed for the DI design.
Cheers
Ian
Cheers
Ian
ruffrecords said:The Carnhill VTB2291 should do very well. It is a gapped type so it is able to pass some dc. How much is anyone's guess but it is probably more than the few mA needed for the DI design.
Cheers
Ian
rock soderstrom said:Is your heater ground connected to the 170V HT ground? If not, this will lead to massive hum.
Should be 470k...Juanaca said:The only modification that I have been forced to make is not to connect the 480k resistor
This resistor cannot be left unconnected in the absence of a source connected to the input.with all the masses to the 1.25k pin 2 resistor.
Enter your email address to join: