On Tue, Aug 13, 2024 at 04:49 AM, chris.sentance wrote:
In some designs there are 2 series (parallel) diodes between the diodes connecting the loop connection to ground and some just have a pair of parallel 1N4148’s. I presume the latter is correct.
If you want to protect the loop against static atmospheric voltages to earth, you need to connect the diodes to ground. Ground means real ground/earth, not GND/minus of the amplifier.
?
regards
Fred
