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DC Heater spikes

2/9/2000 9:20 PM
Greg	DC Heater spikes Hi, I've got a DC heaters on all my preamp tubes, but I want to connect my switching supply to this. Connected to the switching supply are 5 relays and 10 opto's. I want to know if using the same rectifier connected to the heater winding on my PT would cause voltage spikes in the heaters of preamp tubes when I switch a relay on (in turn switching on a couple LDR's). I've got a 10,000 uf cap for filtering before the heaters (after the rectifier) and a 500uf cap before the switching. Is this alright or will I damage my tubes with heater voltage spikes? Thanks, Greg

2/9/2000 9:20 PM

Greg

DC Heater spikes

Hi,
I've got a DC heaters on all my preamp tubes, but I want to connect my switching supply to this. Connected to the switching supply are 5 relays and 10 opto's. I want to know if using the same rectifier connected to the heater winding on my PT would cause voltage spikes in the heaters of preamp tubes when I switch a relay on (in turn switching on a couple LDR's). I've got a 10,000 uf cap for filtering before the heaters (after the rectifier) and a 500uf cap before the switching. Is this alright or will I damage my tubes with heater voltage spikes?

Thanks, Greg