6C33C-B Valve Preamplifier

[kristijan-k]

Hello,

Here is one another preamplifier circuit diagram,
it use 6C33C-B Tubes.
It is little unusual, using very powerfull tubes.
I tought it might help someone.

Best regards,
Kristijan Kljucaric
http://web.vip.hr/pcb-design.vip

 

[kristijan-k]

... and here is power supply.

 

[fdegrove]

FREE ELECTRICTY PLANT?

Hi Christian,

Thanks for the circuit,I'd seen it before and I nearly fell off my chair laughing.

Can anyone justify this for a preamp?

I know I can't...they could have made a heafphone amp from it at the same time I reckon?

Flamin' overkill,I tell you...

ROTFLMAO.

Cheers,

 

[dhaen]

Flamin' overkill,I tell you...

But a nice low output Z.

If I liked preamps, I'd be tempted.

 

[fdegrove]

Watch me...

Hi,

John...let's look at the facts here,

Virtually no amplification and a hell of a lot of heater power going down the drain.

If it's low Zo they were after it can be better easily at the expense of all amplification...who needs it anyway?

What's going to be next?

300Bs as rectifier perhaps?? Oh,yes Sir much better sound,Sir...

Cheers,

 

[Colt45]

you could re-arange it a bit and add some gain & a splitter, and have a power amp.. otl.

got some 6SN7s, 6DJ8s, 12AU7s, and 12AX7s today, with some little input transformers.. what to build?

My friend made a headphone amp using 6DJ8s, and parafeeding the output to an input trafo (used as an OPT in this case ), might try that.

hmm.. seems i went a little off topic

too damn lazy to go outside and work on a chassis though.. too cold

 

[dhaen]

300Bs as rectifier perhaps??

I seem to remember seeing a WE circuit with strapped triodes used as rectifiers. May have beeb 300B's.

 

[dhaen]

Virtually no amplification and a hell of a lot of heater power going down the drain.

The life of a triode.

 

[fdegrove]

PSEUDO RECT.

Hi,

I seem to remember seeing a WE circuit with strapped triodes used as rectifiers.

Why,sure you can turn any triode into a rectifier anyway.

Wasting is easy enough.

Cheers,

 

[fdegrove]

ANOTHER OTL?

Hi,

Colt45,

you could re-arange it a bit and add some gain & a splitter, and have a power amp.. otl.

As it is you can even consider it as a SE OTL,just add a driver stage and there you are.

Cheers,

 

[dhaen]

Minimalism

As it is you can even consider it as a SE OTL,just add a driver stage and there you are.

Frank, with your preamp's output voltage, you wouldn't need a driver.