Pfft. A link that returns a 404. Sigh.
Try https://docs.kicad.org/8.0/en/pcbnew/pcbnew.html#custom-design-rules
[Edit: the link probably does work for regular builds. It just doesn't work in development builds.]
Try https://docs.kicad.org/8.0/en/pcbnew/pcbnew.html#custom-design-rules
[Edit: the link probably does work for regular builds. It just doesn't work in development builds.]
First prototype boards are in, most parts are in, so building begins!
- Heater supply for the input tubes is built and works.
- Time delay for B+ and B- is built and seems to work (may need more testing).
- High-voltage supply for negative bias and buffer stage is built and works.
- B+ and B- supply is built, but not yet tested.
Attachments
Finished building the PSU board. Received the Toroidy mains transformers and hooked them up. Works
I am not sure what's the best way to measure the high voltage of the stator bias. The internal resistance of the DVM pulls down the voltage immediately when I touch the HV pin. I might try charging a large capacitor to buffer the voltage and then take a reading off this.
I need to find a chassis to continue with a somewhat more self-contained prototype build. I don't feel comfortable with all that high voltage floating around the wire mess on my workbench...
I am not sure what's the best way to measure the high voltage of the stator bias. The internal resistance of the DVM pulls down the voltage immediately when I touch the HV pin. I might try charging a large capacitor to buffer the voltage and then take a reading off this.
I need to find a chassis to continue with a somewhat more self-contained prototype build. I don't feel comfortable with all that high voltage floating around the wire mess on my workbench...
A 10G HV resistor makes a nice 1000:1 attenuator with the 10M input resistance of most vanilla DVM.
Direct reading, 1KV = 1V.
This works well with the 6.5KV of the Quad ESL57.
The syringe is only for show.
I previously used a string of 10 or 22M resistors to make a 100:1 attenuator.
Direct reading, 1KV = 1V.
This works well with the 6.5KV of the Quad ESL57.
The syringe is only for show.
I previously used a string of 10 or 22M resistors to make a 100:1 attenuator.