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6c33c push pull amplifier circuit

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6c33c push pull amplifier circuit

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WATCH RELATED VIDEO: introducing 6C33C-B push pull power amplifier FLUXION model E-3, 30W per ch 1% THD, pure triode amp

A request for PP 6c33c Schematics


The Audio Voice Newsletter. Show more Show less. Following the publication of its original SE 6C33C amplifier in audioXpress July , Ari Polisois returned with more information on how to further simplify the whole construction and reduce the costs. The results, as the author describes, "combine the advantage s of the push-pull mainly power to the wonderful character of the SE: sensitivity, smoothness, simplicity, and warmth due to the 2nd harmonic content, easily tolerated by our ears, as against the third, fifth, seventh, and so on harmonics produced by the push-pull.

Following the publication of its original SE 6C33C amplifier in audioXpress July , esteemed author Ari Polisois returns with more information on how to further simplify the whole construction and reduce the costs.

DIY audiophiles considering building a single-ended SE amplifier are prepared to accept a limited power output — compared to a push-pull amplifier — for many reasons.

First of all, they know that two output valves in a push-pull configuration can deliver quite a lot of power; whereas, the same tubes in a single-ended circuit deliver about one quarter of that power. In a SE amplifier, the magnetic circuit of the output transformer is constantly and from the start magnetized by the idle plate direct current of the power valves, up to — and sometimes over — half of its capacity, leaving less than half of the total headroom to the alternating currents of the amplified signal.

Figure 1: Push-pull amp circuit. Figure 2: General layout of the Williamson amp. Photo 1: Cores and bobbins.

Photo 2: Duplex. Photo 3: Rear view. Photo 4 4: Ray's duplex amplifier. Photo 5: Ray's duplex amplifier, rear. Table 1. Figure 4A: Driver and output stages. Figure 4B: Power supplies. Figure 5: Suggested layout of the driver section, view from underneath. Photo 6: Bass boost box—input phase inverter transformer. Figures Bias configurations.

Photo 7: Driver unit under construction. Photo 8: Driver unit under construction, inside view. Read more You Can DIY!


Power driver with autobias for PushPull of power triodes or pentodes

The copper chassis 1,5 mm thick is the major difference between the de Lux and standard PhaSt Triode. The power and output transformers are assembled around the magnetic core made of M4 electric steel. Both PhaSt Triode de Lux and PhaSt Triode are manufactured on the basis of the point-to-point method and only top-quality preliminary approved by the client are used. Original placement of the RCA inputs next to the input tube allowed us to eliminate the internal cable that provide strong impact on the sound. The face panel is decorated with the indicator microampermeter , the bias regulator is located on the upper panel.

The results below present circuit simulations for a push-pull pentode 2-tube power amplifier. The Microcap simulator was used to produce the.

Projects & DIY


Out here, ginseng has gradually replaced tobacco as the main crop, but it seems transistors have yet to replace vacuum tubes. A more interesting gentleman you will rarely meet in this hobby. And I should clarify: not only does Mr. Yes, all the power and output transformers are all wound in house on a winding machine, and Mr. Ahn says this allows him to pass on a savings to the buyer. The number of companies doing this nowadays can probably be counted on one hand. Fluxion amps are given their model designations in homage to notable contributors in the field of electronics.

tube amp schematic

6c33c push pull amplifier circuit

Products Power amplifiers M1. FI magazine, Vol. From Brooklyn via Russia with love. Hand-crafted in Brooklyn, much like vintage Marantz gear, the ML1 blends old and new technology, East and West, to forge a sublime statement in power amplification.

David, aka Grumpy, needs our help.

Valve audio amplifier technical specification


I had never been alone with a Russian-manufactured 6C33C tube. At least not at night, in the dark. I noticed their brightly lit, cathedral-like innards. I could believe it—their exposed cathodes were the exact color of the Soviet flag. From more than a foot away, I could feel the heat from their high-amperage filaments.

Category Archives: 6c33c tube data

Q-tron was founded already by my brother Ulf and myself Hans Beijner to develop and produce advanced electronics. Throughout the years we have developed and produced special designs for the Swedish Military and Industry. Both of us have a background at Ericsson where my brother worked with sales and support and myself with electronic circuit design and product management. My interest for vacuum tubes started early and I built my first tube amplifier at the age of 15 and soon I also tried several OTL circuits. When I discovered the 6C33C tube I started to seriously design a better OTL amplifier which was finished in its first form , this has since been refined and improved by e. We can provide tube amplifier design for pre-and power amplifiers with transformers or OTL type.

Susan Parker's Zeus Zero Feedback Push-Pull Transformer Audio Amplifiers. 6C33C SE Pre-amp & PP MOSFET Power Amp Tests.

Single ended amp with 6C33C

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Category: 6c33c tube data


Even 60 years after the concept gained some traction, the notion of an output transformerless OTL tube amplifier still seems mind blowing. Transformation of the high-impedance and low-current tube plate circuit into the high-current and low impedance needs of a loudspeaker appears to require the services of a good output transformer. Early OTL attempts were handicapped by low power and the need for a special high-impedance voice coil speaker. Circa Arnold Peterson and Donald Sinclair described a single-ended push-pull circuit, suited for class AB operation, that became the de facto output topology for most future OTL designs. Its major disadvantage was unbalanced drive, a problem that Julius Futterman solved elegantly in Yet, issues of reliability and damping factor continue to dog many OTL designs.

Post by wayneg » 20 Jan

Single-ended triode

I offer the latest autobias power driver kit. Reliable power signal for triode and pentode PP drive with four power tubes. Indication of autobias, delay of anode current growth after switching on the amplifier. Automatic control of continuous perfect symmetry of PP degree currents. A revolutionary look and great sound!

ARTICLES: Articles on tube audio

Zeus 75 Distortion versus Power Output. Note: Full Class A or Class AB operation depends on output transformer configuration, mosfet bias level and load being driven. Toroid Transformer Version 3rd March 05 updated schematic plus added notes. This image shows the basic principle of how the multi-filar transformers are constructed.




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  1. Bryon

    It is remarkable, rather amusing piece

  2. Lewy

    Where do I get my nobility from?

  3. Noreis

    Excuse, that I interfere, I too would like to express the opinion.