Help with specifications for TMB Superlite 36 watt transformers

Double-Bubble! Place for discussing the 36W version...

Moderators: zaphod_phil, Daviedawg, Graydon, CurtissRobin, colossal

Post Reply
Juanjo42
Unrated
Posts: 5
Joined: Mon 09/18/23 4:20 pm

Help with specifications for TMB Superlite 36 watt transformers

Post by Juanjo42 »

Hi group, I wanted to ask you two questions, and thank you for your kindness. I want to build the 36-watt EL34 Superlite TMB I downloaded from here.

1- I'm going to have the transformers manufactured. I wanted to ask about the specifications. Regarding the PT, how much amperage should I deliver on the 290+290 secondary and the 3.18+3.18 secondary so that it works well and has a little bit of excess without overheating? And what specifications should I ask for the OUTPUT transformer?

2- I'm thinking of doing diode rectification, and the schematic shows a valve. Would this modification raise the voltages? If so, should I use a SAG-type resistor or some means to lower the voltage? Or should I build a PT with a lower voltage than 290+290 so I don't exceed the volts required in the schematic?

Thank you very much in advance and I hope that it is understood enough, and that the translator does not play a trick on me. Regards.
0 x

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 4193
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Help with specifications for TMB Superlite 36 watt transformers

Post by JMPGuitars »

Compare Heyboer and Mercury Magnetics transformer specs as a guide.

Honestly, I dunno why I put a tube rectifier in those docs. I probably had one I wanted to use that was taking up space in my tube box. 😉 The Superlite TMB is usually diode rectified anyway. Yes, B+ voltages will be higher. Look at the thread in my signature for voltage dropping.

I usually do diode rectification in all my amps now unless somebody requests tube rec.

Thanks,
Josh
1 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction
Amplifier Tools & Parts Info


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

Juanjo42
Unrated
Posts: 5
Joined: Mon 09/18/23 4:20 pm

Re: Help with specifications for TMB Superlite 36 watt transformers

Post by Juanjo42 »

JMPGuitars wrote:
Tue 03/11/25 10:27 pm
Compare Heyboer and Mercury Magnetics transformer specs as a guide.

Honestly, I dunno why I put a tube rectifier in those docs. I probably had one I wanted to use that was taking up space in my tube box. 😉 The Superlite TMB is usually diode rectified anyway. Yes, B+ voltages will be higher. Look at the thread in my signature for voltage dropping.

I usually do diode rectification in all my amps now unless somebody requests tube rec.

Thanks,
Josh

Thank you very much for your reply!
1 x

Post Reply