Crown MARCO-TECH 5000VZ - DC;LFI Protection; DC;LFI Protection Purpose; DC;LFI Sensing Method; RC Network for LFI Prevention

Notes
LSNPN CURREN!
HSNPNCURRENT
OUTPUT
MODULE
-±r RED
OWTSW 1 OVER-VOLTAGE
Overall protection scheme block diagram.
DC/LFI
The amplif ier senses it own output for DC or very low f requency and wil!
interrupt the amplifier channel in the event of DC or low frequency.
The feedback loop is sensed for voltage and the current sense signal
provides current information. An RC network at the input to U109C/D
will prevent the LFI circuit from activating with normal audio frequency
material, and will ensure acíivation with high leve! subsonic currents or
voltages.
24 - MA-5000VZ