6C33C SE-OTL Project
#61 Re: 6C33C SE-OTL Project
I wanted to correct this for a long time but never got to it: The 30k/1,5W resistor needs to be 3W.
Here is the B+ psu that works with a standard Avel Lindberg toroid and voltage doubler. B+ should not be less than 132V.
Here is the B+ psu that works with a standard Avel Lindberg toroid and voltage doubler. B+ should not be less than 132V.
#62 Re: 6C33C SE-OTL Project
So I've made a start - today I soldered up the boards for the 6C33C B+ power supplies;
Sorry, I couldn't resist!
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#63 Re: 6C33C SE-OTL Project
Nice boards !
Almost ready for a one channel test build
Almost ready for a one channel test build
#64 Re: 6C33C SE-OTL Project
Excellent, It's good to have someone else building this circuit.brommermartin wrote: ↑Thu Aug 16, 2018 6:53 pm Nice boards !
Almost ready for a one channel test build
image1.jpeg
I will be ordering the metalwork for my chassis tomorrow. I should make some quick progress once I get that delivered but I'll still have to wait for the main transformer to be delivered before I get to listen.
Sorry, I couldn't resist!
#65 Re: 6C33C SE-OTL Project
Not much progress lately because of some family health issues needing my time but yesterday I finally ordered the chassis for my 6C33C build.
Because of heat management considerations I've gone for a 'Dissipante' from Modushop;
and specified some additional machining for the valve sockets etc. The heatsinks are to dissipate the heat from the current sinks whilst I've also included the option for a couple of 'silent' fans to keep the temperature of the 6C33C sockets manageable. The top of the chassis will look like this;
The power transformers etc. will have their own chassis that will match the Dissipante but without the heatsinks.
Because of heat management considerations I've gone for a 'Dissipante' from Modushop;
and specified some additional machining for the valve sockets etc. The heatsinks are to dissipate the heat from the current sinks whilst I've also included the option for a couple of 'silent' fans to keep the temperature of the 6C33C sockets manageable. The top of the chassis will look like this;
The power transformers etc. will have their own chassis that will match the Dissipante but without the heatsinks.
Sorry, I couldn't resist!
#66 Re: 6C33C SE-OTL Project
PCBs for the 6SN7 driver stage are mostly assembled;
Sorry, I couldn't resist!
#67 Re: 6C33C SE-OTL Project
More soldering today; assembled the boards for the Neurochrome Maida regulated supply that will power the 6SN7 driver stage along with the regulated supply for the 6SN7 filaments.
Just waiting for the chassis and toroid to arrive and I can start bolting it all together.
Just waiting for the chassis and toroid to arrive and I can start bolting it all together.
Sorry, I couldn't resist!
#68 Re: 6C33C SE-OTL Project
Still waiting for the transformer and metalwork....
Sorry, I couldn't resist!
#70 Re: 6C33C SE-OTL Project
Still bloody waiting for the Pinnacle kit. Three days to ship from the US, been stuck in Customs in Coventry for the last two weeks. Typical.
#72 Re: 6C33C SE-OTL Project
Well, I've unpacked the box and Modushop has done a great job of the chassis top plate so I'll be able to start assembly this weekend. Unfortunately there were also a couple of errors that I've had to query with them but I've already had a positive response, which is reassuring. Pictures IDC.
Sorry, I couldn't resist!
#73 Re: 6C33C SE-OTL Project
I've also had confirmation that my toroidal transformer for the B+ supplies will be shipping from Canterbury Windings today.
Sorry, I couldn't resist!
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#74 Re: 6C33C SE-OTL Project
Good news
#75 Re: 6C33C SE-OTL Project
The big Septal sockets for the 6C33C valves installed.
Sorry, I couldn't resist!