B&C Voltage Regulator BC LR3C-14

Used on all externally regulated 14 volt alternators using circuit type "B" (one field lead grounded directly)

For homebuilt use only. The LR3C Controller combines three essential devices in one physical container, making it a lightweight, space-saving, and cost-effective alternative for any aircraft electrical system, while also improving safety of flight.   

            First, the LR3C operates as a “quiet,” linear regulator, generating no audio or radio noise (in contrast to switching-type regulators).  Second, it provides a vital safeguard for your aircraft electrical system with a solid-state, “crowbar” over-voltage protection circuit. And third, the LR3C Controller functions as an important low-voltage monitoring and warning system. 

            The LR3C weighs approximately 9 ounces, and may be mounted on the cockpit side of the firewall. It is also available with an optional battery temperature sensor (intended for aircraft operating in colder climates).