|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
For Sale Ads |
Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.
Original Message
RE: how low can you go.....??
Posted by Chip647 on January 1, 2017 at 09:09:29:
A couple of things. Once you get to close to 0 in grid signal voltage, you run into A2 conditions. The tube must be designed for A2 and the driver must be able to put out serious watts. The operating conditions change with the voltage, the tube requires a different impedance from the OPT at different voltages.