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ValvoStef · 1st Oct 2019, 2:05 pm

Hi all,

I seem to have a problem understanding with the operation of a valve as a diode. Say, for example, take the diode section of an EABC80. I apply the heater voltage, then pin 2 and pin 3 act as a diode. Surely, there must be a voltage drop between anode and cathode. Data sheet does not mention this. In comparison to a silicon diode e.g. 1N4148 I should expect the A-K voltage drop of a thermionic diode will be significantly higher or is my assumption wrong?

1st Oct 2019, 2:05 pm	#1
ValvoStef Hexode Join Date: Mar 2014 Location: Fareham, Hampshire, UK. Posts: 482	EABC80 question Hi all, I seem to have a problem understanding with the operation of a valve as a diode. Say, for example, take the diode section of an EABC80. I apply the heater voltage, then pin 2 and pin 3 act as a diode. Surely, there must be a voltage drop between anode and cathode. Data sheet does not mention this. In comparison to a silicon diode e.g. 1N4148 I should expect the A-K voltage drop of a thermionic diode will be significantly higher or is my assumption wrong? __________________ Failing to prepare is preparing to fail ...