Radio Amateur Quiz Canadian License

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Question A-005-002-006

In a grounded grid amplifier using a triode vacuum tube, the cathode is connected to a radio frequency choke. The other end of the radio frequency choke connects to the:

Correct Answer

B- (bias)

Explanation

In some grounded-grid designs, an RFC connects the cathode to ground or a bias supply (B-) to provide a DC path for cathode current while isolating the cathode for RF input.

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