Re: DB6NT sequencer

Alan Melia

.......or more likely short circuit. Very high very short spikes can cause the PIV to reduce, then eventually the first ''relay off'' condition melts the diode. Fast good diodes are not the best snubbers, you require a dode with a fair bit of themal inertia. Particularly when techs used to ''routine'' Strowger :-))

----- Original Message -----
Sent: Tuesday, March 09, 2021 9:45 PM
Subject: Re: [UKMicrowaves] DB6NT sequencer

Hi John

Check that the protection diode across the relay has not gone open circuit.


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