17-04-2015, 02:01 AM
First light today.
Yes the red light did come on after a quick run up on the Variac.
The regulated power supply came up spot on but sadly dropped by about 8 volts during soak test.
A paper capacitor looks highly suspect and will be sorted out next session.
Also in the power supply something very interesting indeed lit up
It is a 6CD6.
To me it looks like a double cathoded beam tetrode with a common anode. It is internally connected to look like a single beam tetrode at the base pins. Perhaps I will have to start a new thread for it with loads of photos. I questioned it being the correct valve but the number is correct. It was difficult to get photos due to the top cap connector being well jammed on and there is no way I am going to risk trying to take it off to get the valve out. I would have to unlace the wiring to get the anode wire free. It is staying firmly plugged into the chassis.
I have got one hell of a stable instrument here even with a bit of drift on the HT.
Nixie tube counter time for the dial calibration check so more nice things to light up with this one
Yes the red light did come on after a quick run up on the Variac.
The regulated power supply came up spot on but sadly dropped by about 8 volts during soak test.
A paper capacitor looks highly suspect and will be sorted out next session.
Also in the power supply something very interesting indeed lit up
It is a 6CD6.
To me it looks like a double cathoded beam tetrode with a common anode. It is internally connected to look like a single beam tetrode at the base pins. Perhaps I will have to start a new thread for it with loads of photos. I questioned it being the correct valve but the number is correct. It was difficult to get photos due to the top cap connector being well jammed on and there is no way I am going to risk trying to take it off to get the valve out. I would have to unlace the wiring to get the anode wire free. It is staying firmly plugged into the chassis.
I have got one hell of a stable instrument here even with a bit of drift on the HT.
Nixie tube counter time for the dial calibration check so more nice things to light up with this one
