A classic 35W power amplifier circuit diagram

This is the circuit diagram of EL34 for 35W tube amplifier. This tube amplifier was designed in 1953 and was in operation from 1954 to 1989. If you are interested in classic circuits and classic components, you should try this circuit. The circuit is interesting, but I think the tubes will be hard to find.

Schematic diagram, schematic diagram:

power supply:

Component list:

This is a classic 35W power amplifier design using tubes, two EL34 connected Push-Pull, designed by Siemens & Halske, design date 03/24/1953, code SV410/1. The amplifier was in operation from 1954 to 1989, whenever it was and disappeared, with an average lifespan of 15 hours per day. Other than the replaced tubes, resistors and capacitors, it shows no particular damage due to natural wear and tear.

One notable change was the replacement of the rectifiers for the lamp diodes. The only problem for those trying to build, will be the output transformer (for all tube manufacturers), as the code doesn't help. Can be replaced with a conventional output transformer suitable for EL34. During construction, sufficient electronic experience and attention to high voltage, risk of electric shock are required (respectively for all circuits).