Using a GZ34/5AR4, with a 500V/120ohm PT, CLC of first cap of 40uF, a 1.2H/18ohm choke, then a 560uF cap with a load of 100mA, I get crazy graphs and an over-current error.
Is the choke too low in resistance/inductance and that is overstressing the GZ34? It's an old monster of thing, would I be better buying a 5H ~100 ohm one?
Thx
Is the choke too low in resistance/inductance and that is overstressing the GZ34? It's an old monster of thing, would I be better buying a 5H ~100 ohm one?
Thx
Things look all right to me. That is, without judging the quality of your supply, PSUD seems to handle it fine. Screen shot below.
http://www.just4sheep.com/site/images/PSUD.pdf
http://www.just4sheep.com/site/images/PSUD.pdf
Didn't get a chance to run the sim, but by looking at your values it seems like a tough load for the rectifier durring the power up cycle(if the rectifier you are refering to does cross-reference the 5AR4). Especially in a worst case, real-world situation, like tubes are warmed up then you power it off, then back on before they are cooled down.
I'd either,
- Reduce capacitance
- Increase L and or R (you could just add a resistor in series with the choke if you already own the choke and have the voltage headroom to do so)
- Change rectifier type
Or a combination.
I'd either,
- Reduce capacitance
- Increase L and or R (you could just add a resistor in series with the choke if you already own the choke and have the voltage headroom to do so)
- Change rectifier type
Or a combination.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.