The maximum sustained power draw for the heater supply in my build is 2.16A, and for the B+ supply it's 90mA. What is an appropriate fuse value for these two? They are already factored above expected power draw by 1.8x. Would 2.25A and 100mA be appropriate?
Then my next question is, should they be slow or fast blow? I assume slow-blow since they are power supply and not line fuses?
Then my next question is, should they be slow or fast blow? I assume slow-blow since they are power supply and not line fuses?
The heater draw might be 2.16A but the heaters aren't running from line voltage.
Do you have two separate transformers one for heaters and one for B+? This is a preamp?
In any case, assuming you mean 2.16A @ 6.3V, and you use two separate power supplies, I'd probably use 500mA slo blo or 1A normal ones per primary if they are 120V. Half those ratings for 230V.
Do you have two separate transformers one for heaters and one for B+? This is a preamp?
In any case, assuming you mean 2.16A @ 6.3V, and you use two separate power supplies, I'd probably use 500mA slo blo or 1A normal ones per primary if they are 120V. Half those ratings for 230V.
Oh, of course! Yes, two transformers, as you say, for a preamp. 2.16A is at 12.6V and 90mA is at 230V, 115V input.