Supplying Power To A Mullard Vacuum Tube

AI Thread Summary
To supply power to a Mullard vacuum tube, one must understand the necessary voltage and current specifications, particularly for models like the EL-34, which operates at a maximum plate voltage of 250 V and current of 100 mA. Proper cathode biasing is essential, as it affects the voltage difference between the supply and anode voltage. The discussion highlights the importance of using a datasheet for accurate information on operating conditions. Additionally, safety precautions should be taken to avoid any hazardous outcomes. Understanding these technical details is crucial for successfully powering Mullard vacuum tubes.
ScienceNerd36
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How would a curious young gentleman like myself go about supplying power to a Mullard vacuum tube? I have several different types of Mullard tubes, but no idea as to how I can generate the electron beam.

P.S. If side-effects of solution include death, injury or Hannah Montana please do not post.
 
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I had a pair of Mullard EL-34 pentodes as the final push-pull stage in a big vacuum tube audio amplifier. As I recall, the plates ran so hot that they turned red. See
http://upload.wikimedia.org/wikipedia/en/9/90/Mullard_el34.jpg
http://en.wikipedia.org/wiki/EL34
Here is a data sheet
http://www.drtube.com/datasheets/el34-philips1969.pdf
Max plate current, voltage is 100 mA, 250 V
http://www.eierc.com/rc/EL34.htm
The difference between the max supply voltage and anode voltage is the cathode bias resistor IR drop from cathode to ground.
Finally found a Mullard datasheet for EL-34:
http://www.hifitubes.nl/weblog/wp-content/mullard-el34.pdf

Bob S
 
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