Starting and operating apparatus for high pressure sodium lamp b
Starting and operating ballast for high pressure sodium lamp
Starting circuits for discharge lamps
Step-controllable electronic ballast
Structure of LED lighting chain
Switched bridge circuit
Switched mode electrode ballast
Synchronously-controlled light string
System for controlling fluorescent lamp operation and illuminati
System for controlling power applied to a gas discharge lamp
Timer circuit for a stroboscope
Track lighting system for 277 volt power line
Traffic light dimming technique and circuitry
Traffic signal installation comprising an led-light source
Transformer dimmer circuit
Transformerless current-limiting circuit
Transformerless high-voltage generator circuit
Two contact, AC-operated negative glow fluorescent lamp
Two terminal controller
Two terminal incandescent lamp controller