Hi,
I decided to add a transformer coupled XLR out and a fan to my existing reactive load. After doing some search I found this schematic (the fan part added by me Powerbrake style).
Now here's the odd thing. When ground lift is on (speaker ground connected to chassis) the fan is working properly. However when speaker ground is lifted from chassis the fan stops working and the 100 Ohm resistor quickly heats up and burns. So what's going on here and is this the proper way to organize grounds?
Most of the time I've seen the ground is lifted from pin 1 of the XLR connector but in my case I followed the Jensen schematic which allows for balanced XLR/TRS and unbalanced TRS with mono jack using only one combo socket.
I decided to add a transformer coupled XLR out and a fan to my existing reactive load. After doing some search I found this schematic (the fan part added by me Powerbrake style).
Now here's the odd thing. When ground lift is on (speaker ground connected to chassis) the fan is working properly. However when speaker ground is lifted from chassis the fan stops working and the 100 Ohm resistor quickly heats up and burns. So what's going on here and is this the proper way to organize grounds?
Most of the time I've seen the ground is lifted from pin 1 of the XLR connector but in my case I followed the Jensen schematic which allows for balanced XLR/TRS and unbalanced TRS with mono jack using only one combo socket.
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