What is the Best Rectifier to 6C33 SE?

[FullRangeMan]

I would like to know whats the best full wave Russian Rectifier to 6C33 SE?
I have a bunch of 5C8S but a member told me it have current in excess.
So Iam thinking 5C3S.
''GSTube.com''. Tubes, sockets etc. Search result for <u>5z3</u>
Any opinion or other tube?
Thanks in advance

 

[JonSnell Electronic]

The 5C8S requires 5volts at 5Amps for the heaters with an odd ball base!
The 5C3S is equivalent to 5U4 and is less power hungry and gives a good current output plus it is good for 1700Volts at 180mA, how long for I wouldn't like to say. The base is a standard 'International Octal' also called the 'American Octal'.

 

[FullRangeMan]

Thanks Jon. The 5C3S have long heating time?
Power intended is 12/13W output Watts.

 

[JonSnell Electronic]

I think the 5C3S is the same as 5U3C and is a bright emitter, so very fast.
Plenty of current for your power level.

 

[kevinkr]

Possibly not in the case of the 6C33 which may be running at 200mA - 250mA at a couple of hundred volts. I would not operate one at much over 200V. (300mA at 150V has been encountered)

I would either go solid state or the 5C8S. One other option would be to consider a pair of parallel 5AR4 per channel.

 

[RajkoM]

Pair of parallel 5U4GB works well for years already.
L-input PSU.

 

[FullRangeMan]

Thanks boys, much appreciated.
I prefer Russian tubes due price and reliability.
I dont liked this 5U4GB due the Operating Considerations on bottom page 2.
https://frank.pocnet.net/sheets/049/5/5U4GB.pdf
Not parallel tubes, I want an single full wave.
Any more suggestion welcome.

 

[sser2]

I would recommend 6CM3. This is the highest current capacity (400 mA) TV damper diode. Voltage drop is less that 10 V at 350 mA. These tubes come in two varieties, single or double plate; double plates are better. The disadvantages - you need 2 tubes, and they require Magnoval socket.

 

[TonyTecson]

this maybe weird, but 6c33 that had developed grid to cathode shorts can still be used as a rectifier.....
i have used the 6as7 as rectifiers in a line amp before....

 

[FullRangeMan]

Just located this other Russian full wave 5Z9C (5C9S):
Any opinon or datasheet translation from Wavebourn?
''GSTube.com''. Tubes, sockets etc. Parameters and characteristics 5z9c

 

[sser2]

Max. supply voltage (per plate): 500 VAC
Max. output current: 200 mA
Max. peak output current: 3 A
Max peak reverse voltage: 1,700 V
Max plate dissipation: 12 W
Heater 5 V 3 A

 

[Ketje]

If you like Russian tubes, a pair of 6Ц17C ?
Mona

 

[FullRangeMan]

Max. supply voltage (per plate): 500 VAC
Max. output current: 200 mA
Max. peak output current: 3 A
Max peak reverse voltage: 1,700 V
Max plate dissipation: 12 W
Heater 5 V 3 A

Thanks Bro, you most kind.

 

[Bandersnatch]

If you wish to run 6C33's, a pair of 866's will do just fine. LC filter only...
cheers,
Douglas

 

[FullRangeMan]

If you wish to run 6C33's, a pair of 866's will do just fine. LC filter only...
cheers,
Douglas

Thanks for the suggestion, but 866A is rare and expensive.

 

[audiowize]

Cree C3D03060F. I never even considered vacuum state rectification when I built my 6C33. You want a pretty hefty amount of capacitance, and chokes for that kind of current tend to not have a lot of inductance, so sand is your friend here.

 

[FullRangeMan]

Cree C3D03060F. I never even considered vacuum state rectification when I built my 6C33. You want a pretty hefty amount of capacitance, and chokes for that kind of current tend to not have a lot of inductance, so sand is your friend here.

Thanks for the suggestion, they dont offer assembled bridge in four unit sets?

 

[RajkoM]

PSU for 6C33 SET with tube rectifier include use of SS diodes for bridge.

In my PSU, with 5U4GB`s I use MUR460.

Your plan is heating one cathode or both cathodes in 6C33C ??

 

[RajkoM]

If your plan is heating both cathodes, forget about tube rectifier, I suggest.

 

[audiowize]

Thanks for the suggestion, they dont offer assembled bridge in four unit sets?

Nope, just put them on proto board or mount them on terminal strips.