Duel Rectifier Issue

mark02131 · 22nd December 2009, 12:18 PM

I am building this power supply that uses 2 5Y3GT rectifiers but noticed that my power supply (a hammond 302AX) 5v is only 3 amp and the 5Y3GT data sheet specifies 2 amp heater current. Is there anyway around this, should change the power supply to only use one larger rectifier? what if I run the heaters in parallel? Here's the schematic

mark02131 · 22nd December 2009, 12:39 PM

I just realized they are wired in series so they are only using a total of 2 amps anyway is that correct?

Frank Berry · 22nd December 2009, 01:09 PM

The filaments are not wired in series. They're in parallel.
You might try a 5AR4 which can deliver more current with less voltage drop.

mark02131 · 22nd December 2009, 02:01 PM

Your right they are parallel I would like to use the duel tubes if possible, maybe I could get a second 5v transformer to drive them or something.

22nd December 2009, 12:18 PM	#1
mark02131 diyAudio Member Join Date: Nov 2005 Location: Boston, MA	Duel Rectifier Issue I am building this power supply that uses 2 5Y3GT rectifiers but noticed that my power supply (a hammond 302AX) 5v is only 3 amp and the 5Y3GT data sheet specifies 2 amp heater current. Is there anyway around this, should change the power supply to only use one larger rectifier? what if I run the heaters in parallel? Here's the schematic

22nd December 2009, 01:09 PM	#3
Frank Berry diyAudio Member Join Date: Sep 2003 Location: Midland, Michigan	The filaments are not wired in series. They're in parallel. You might try a 5AR4 which can deliver more current with less voltage drop. __________________ Frank

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22nd December 2009, 12:39 PM	#2
mark02131 diyAudio Member Join Date: Nov 2005 Location: Boston, MA	I just realized they are wired in series so they are only using a total of 2 amps anyway is that correct?

22nd December 2009, 02:01 PM	#4
mark02131 diyAudio Member Join Date: Nov 2005 Location: Boston, MA	Your right they are parallel I would like to use the duel tubes if possible, maybe I could get a second 5v transformer to drive them or something.

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