Hello,
I'm trying to regulate 800V input to about 300V output, using the regulator below:
It "works" without load, but when i attach the PSU on the output, the whole thing goes nuts, transistor starts to vibrate, connected multi-meters start to beep, power supply tries to turn on and fails about every 2 seconds.
I'm controlling the input voltage from 0 to 1000V, so I've tried multiple input voltages.
Without load, output voltage is ~303V (if input>output ofc).
With load, voltage sags to ~30, then starts (slowly) rising to ~90 before dropping again.
Does anyone have any idea why the circuit would behave like that?
I'm trying to regulate 800V input to about 300V output, using the regulator below:
It "works" without load, but when i attach the PSU on the output, the whole thing goes nuts, transistor starts to vibrate, connected multi-meters start to beep, power supply tries to turn on and fails about every 2 seconds.
I'm controlling the input voltage from 0 to 1000V, so I've tried multiple input voltages.
Without load, output voltage is ~303V (if input>output ofc).
With load, voltage sags to ~30, then starts (slowly) rising to ~90 before dropping again.
Does anyone have any idea why the circuit would behave like that?