Hello everybody,
I am new to the website, but long time DIYer.
I am playing with a power tube cathode biasing with a MOSFET.
I have two circuits in mind which I'll post.
I need your opinion and suggestions on both.
What will be the difference or benefits of using MOSFET(second attachment) over the Bipolar transistor(first attachment). Also am I correct about power dissipated from cathode transistor? I expect to be around 32W for the bipolar transistor version and 18W for the MOSFET version. I build already the MOSFET version and it dissipates a huge amount of heath. I tried to measure the temperature on the MOSFET itself and it shows 145~150 centigrade.
Thanks alot,
Joe
I am new to the website, but long time DIYer.
I am playing with a power tube cathode biasing with a MOSFET.
I have two circuits in mind which I'll post.
I need your opinion and suggestions on both.
What will be the difference or benefits of using MOSFET(second attachment) over the Bipolar transistor(first attachment). Also am I correct about power dissipated from cathode transistor? I expect to be around 32W for the bipolar transistor version and 18W for the MOSFET version. I build already the MOSFET version and it dissipates a huge amount of heath. I tried to measure the temperature on the MOSFET itself and it shows 145~150 centigrade.
Thanks alot,
Joe
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