In article , Don Pearce
wrote:

Mosfets are an excellent alternative to relays these days. On resistance
of a few milliohms in cheap packages.

And should work OK with something like a 405 that has current limiters.

However I must confess that the impression I've gained is that here the
problem may be being injected into the input of the 405. If so, using small
signal devices to clamp that to ground might be cheaper and more effective.

Jim

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