Posted on Sunday, 1st May 2011 by Auw Jimmy
Last week, we have a nice blind test (or better we call as blind scoring) for high power triode Single Ended amplifier. The high power triode means a high voltage one. We are talking about at least 800 VDC voltage, (some could reach 1250 VDC) which can be very lethal if treated not carefully. You never want to have a single contact with this when the circuit is on action. Physical skin damage could occur easily – at best, and at worst, could lead into serious injury (or death!). Before you have in mind to build one of these, better you know what you are doing. Never work in the working circuit and always measure the voltage before start tweaking here and there. Most of the capacitor at 800 VDC or more could store enough energy to hurt, shock, and kill anyone who dares to touch them. So beware! Always test all the point before, and never forget to use bleeder resistor to make sure no energy remains on the capacitors. Wait for awhile after powering down, to make sure the capacitor completely discharged. Well, enough all those silly theory, so enjoy the music and pics.
Below is a shoot of some amplifiers on action. As you can see below. The beauty of high power triode is their appearance. The light of thoriated tungsten is so sexy. Some of them use 10Y as driver stage, which also another thoriated tungsten which glows beautifully. This is hot amplifier, as the power dissipation is quite high. Forget about go green or any other power saving things. It’s time to get hot!
Tags: 211, 6C33, 805, 845, High Power Triode, Tube Amplifier
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