I'm full of admiration for the 1j24b, it really packs a punch despite its miserly 11mA filament current.
If there is anything to be wary of, it's the spread in its characteristics. I have two in a circuit, each loaded with 270k anode load, and each with g1 tied to 0V with a grid-leak resistor.
To get the same anode voltage, I need to hit one with 23.6V on g2, and the other 36.4V. So, include trimpots in your build!
If there is anything to be wary of, it's the spread in its characteristics. I have two in a circuit, each loaded with 270k anode load, and each with g1 tied to 0V with a grid-leak resistor.
To get the same anode voltage, I need to hit one with 23.6V on g2, and the other 36.4V. So, include trimpots in your build!
