1N5048 diode?

Brit01 · 17th August 2009, 12:22 PM

Had a quick look for data sheets on this diode and couldn't find anything. Not sure if these are suitable for my SS power supply.

I decided to try this out in the Wheatfield headphone amp with 6080 running at about 270 B+.

Got a problem with huge amounts of hum/noise.

psu:

275V (secondary)

47uf
225ohms
680uf
60ohms
680uf

Brit01 · 17th August 2009, 12:59 PM

just to note;

6080 is running at 90 mA.

Also have tried a 6CQ7 for the input tube as it has an mu of 20.

Ouroboros · 17th August 2009, 02:17 PM

Are you sure you mean 1N5048, and it isn't a typo? (Because the commonly available 1N5408 is a 3A 1000V diode which is commonly used to rectify the B+ for valve amplifers).

Brit01 · 17th August 2009, 02:25 PM

yes a typo.

Sorry. In the middle of working at the office while quickly looking at threads!!

1n5408. No wonder I couldn't find data.

Yes 3 amps.

Got something wrong in the circuit on the breadboard. Have to check it all out.

It's making huge amounts of noise.

17th August 2009, 12:22 PM	#1
Brit01 diyAudio Member Join Date: Jul 2008	1N5048 diode? Had a quick look for data sheets on this diode and couldn't find anything. Not sure if these are suitable for my SS power supply. I decided to try this out in the Wheatfield headphone amp with 6080 running at about 270 B+. Got a problem with huge amounts of hum/noise. psu: 275V (secondary) 47uf 225ohms 680uf 60ohms 680uf

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17th August 2009, 12:59 PM	#2
Brit01 diyAudio Member Join Date: Jul 2008	just to note; 6080 is running at 90 mA. Also have tried a 6CQ7 for the input tube as it has an mu of 20.

17th August 2009, 02:17 PM	#3
Ouroboros diyAudio Member Join Date: Dec 2003 Location: Nottingham UK	Are you sure you mean 1N5048, and it isn't a typo? (Because the commonly available 1N5408 is a 3A 1000V diode which is commonly used to rectify the B+ for valve amplifers).

17th August 2009, 02:25 PM	#4
Brit01 diyAudio Member Join Date: Jul 2008	yes a typo. Sorry. In the middle of working at the office while quickly looking at threads!! 1n5408. No wonder I couldn't find data. Yes 3 amps. Got something wrong in the circuit on the breadboard. Have to check it all out. It's making huge amounts of noise.

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