|
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: Q:DN2540 CCS protection diodes
Posted by Alex M on January 6, 2017 at 03:55:28:
Nikos Salas uses 12V zeners with the DN2540s in the CCS in his HPHV shunt regulator pretty much as your diode strings, but with the difference that each of the zeners is on the opposite end of the gate stop resistor from the gate of the MOSFET. It probably doesn't make any practical difference, but I would consider this better practice, as it isolates the gate from anything that could send RF noise to the active device.
As already noted, you don't need back-to-back zeners.
Alex