Patents
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
11/1988
11/02/1988CN87211040U Parallel type duplex tube ballast
11/01/1988US4782386 Video endoscope with a light source operable in a continuous or stroboscopic mode
11/01/1988US4782268 Low-pressure discharge lamp, particularly fluorescent lamp high-frequency operating circuit with low-power network interference
10/1988
10/26/1988CN87213626U Universal power-saving fluorescent lamp with an extension pedestal
10/20/1988WO1988008241A1 Apparatus and method for forming segmented luminosity in gas discharge tubes
10/19/1988CN88212791U 多功能太阳能荧光灯 Multifunctional Solar Fluorescent
10/19/1988CN88201060U Power-saving electric source for neon light
10/19/1988CN88105405A 电极型荧光灯 Electrode Fluorescent Lamp
10/19/1988CN87208679U Power-saving life-prolonging switch for fluorescent lamp
10/19/1988CN87102370A Dc pulse convertor
10/12/1988CN87212090U Electronic ballast
10/12/1988CN87210949U Strobo suppressor of fluorescent lamp
10/11/1988US4777625 Divided-bit line type dynamic semiconductor memory with main and sub-sense amplifiers
10/11/1988US4777507 Control system for an electronic flash unit
10/11/1988US4777410 High intensity discharge lamp
10/11/1988US4777409 Fluorescent lamp energizing circuit
10/11/1988US4777408 Electronic adornment for simulating natural flickering light
10/11/1988CA1243073A1 Method and apparatus for the stabilization of direct current arc lamps
10/11/1988CA1243072A1 High-pressure discharge lamp
10/06/1988DE3710278A1 Arrangement for monitoring a fluorescent lamp
10/05/1988EP0285049A1 Device for starting and operating a fluorescent lamp
10/05/1988CN88211325U Multifunction fluorescent lamp eletronic ballast
10/05/1988CN87214500U Multifunction electronic switch of fluorescent lamp
10/05/1988CN87204517U 一种电子镇流器 An electronic ballast
10/04/1988US4775822 Power network fluorescent lamp operating circuit
09/1988
09/29/1988DE3709004A1 Circuit arrangement for supplying a fluorescent lamp
09/28/1988EP0155303B1 Inverter circuit with a control circuit for leading transistors more effectively into a turned-off state
09/28/1988CN88200137U Daylight lamp with light-regulating
09/28/1988CN87209669U Double-tube ballast
09/22/1988WO1988007316A1 Activating lighted signs
09/21/1988EP0282488A1 A high intensity discharge lamp self-adjusting ballast system with current limiters and a current feed-back loop
09/21/1988CN87209967U Electronic long-life fluorescent tube
09/14/1988CN87217163U Ac pulse ballast
09/14/1988CN87217123U Electronic ballast for fluorescent lamp
09/14/1988CN87211541U Electronic energy saving trigger for fluorescent lamp
09/14/1988CN87208710U Electronic cushioning starter for fluorcseent lamp
09/14/1988CN87204214U 节能高频电子镇流器 Energy-saving high-frequency electronic ballast
09/14/1988CN87105959A Circuit arrangement for operation of high-pressure gas discharge lamps by means of pulsatory supply current
09/13/1988US4771301 Apparatus for flash photography
09/06/1988US4769578 High-pressure sodium discharge lamp
08/1988
08/31/1988CN87216462U Fluorescent lamp without preheating and without glow-starter
08/31/1988CN87213031U Long-life dc fluorescent lamp inverter
08/24/1988EP0279489A1 DC-AC converter for supplying a gas and/or vapour discharge lamp
08/24/1988EP0279073A2 Circuit arrangement for the high-frequency operation of fluorescent lamps having pre-heating electrodes
08/24/1988CN87212573U Fast switch starter for fluorescent lamp
08/24/1988CN86209387U Light-variable fluorescent lamp
08/23/1988US4766353 Lamp switching circuit and method
08/23/1988US4766352 Method and apparatus for starting and operating fluorescent lamp and auxiliary ballast systems at reduced power levels
08/23/1988US4766350 Electric circuit with transient voltage doubling for improved operation of a discharge lamp
08/18/1988DE3703272A1 Electronic ballast for dimming fluorescent lamps and neon tubes
08/17/1988EP0278468A2 System for lighting fluorescent lamps
08/17/1988CN87208644U Glow self-starting switch of fluorescent lamp
08/10/1988EP0277605A1 Ballast for gas discharge lamps
08/10/1988CN87216250U Electronic ballast for fluorescent lamp
08/10/1988CN87215861U High-frequency power supply arrangement for neon light
08/10/1988CN87215509U High-efficency electronic energy-saving lamp
08/10/1988CN87208883U Automatic ignitor for fluorescent lamp
08/09/1988US4763239 Switched mode power supplies
08/09/1988US4763044 Start, hot restart and operating lamp circuit
08/03/1988EP0276460A1 Circuit arrangement for operating a low-pressure discharge lamp
08/03/1988EP0276266A1 Circuit for starting and operating a gas discharge lamp
08/03/1988CN87213587U Starting and brightness-adjustment device for fluorescent lamp
08/02/1988US4761585 Fitting for compact electric discharge lamps
08/02/1988US4761583 Arc discharge lamps containing a radioactive alloy coating of lanthanum, nickel, uranium and-or thorium
08/02/1988CA1239979A1 Compact igniter for discharge lamps
07/1988
07/27/1988EP0275586A1 Switching arrangement
07/27/1988CN88210038U Fluorescent lamp starter with four foots
07/27/1988CN88200283U Fluorescent lamp ballast with multi-outputs
07/27/1988CN88100155A Circuit and device with long life for rapid starting of fluore-scent tube with cold cathode
07/27/1988CN87212281U Electrical ballast with protective circuit
07/27/1988CN87209066U Three-purpose sunlight desk lamp
07/27/1988CN87204706U Pullswitch capable of substituting starter
07/14/1988DE3644788A1 Circuit arrangement for operating low-pressure discharge lamps in individual mode and tandem mode
07/13/1988CN87206495U Adjustable mercury-xenon head-light for locomotive
07/13/1988CN87204498U Multi-functional energy-saving electronic starter for fluorescent tube
07/12/1988US4757238 Low voltage fluorescent lighting system
07/06/1988CN87210464U Electricity-saving fluorescent lamp ballast
07/05/1988CA1238945A1 Electronic high frequency controlled device for operating gas discharge lamps
07/05/1988CA1238944A1 Neon sign control device
06/1988
06/29/1988EP0272701A2 Apparatus for controlling charging of main capacitor of flash unit
06/29/1988CN87205770U Multi-tap adjustable fluorescent-lamp ballast
06/29/1988CN87107403A Switching arrangement
06/28/1988US4754389 Voltage regulating circuitry for a DC to DC converter
06/28/1988US4754201 Magnetic low load factor series ballast circuit
06/28/1988US4754198 Circuit breaker
06/22/1988CN87210212U Dividing self-triggered ballast
06/21/1988CA1238359A1 High-pressure high-frequency discharge lamp
06/16/1988WO1988004517A1 Programmable multicircuit wall-mounted controller
06/15/1988EP0271396A1 Process and device for igniting discharge lamps
06/15/1988EP0271083A2 Interchangeable flash device
06/14/1988US4751436 Electronic flash device for a camera
06/14/1988US4751398 Lighting system for normal and emergency operation of high intensity discharge lamps
06/14/1988CA1238078A1 Output circuit for an electronic ballast system
06/08/1988EP0270183A1 Circuit arrangement for operating high-pressure gas discharge lamps by means of a pulse-shaped supply current
06/08/1988EP0258223A4 Ballast for ionic conduction lamps.
06/07/1988US4749916 Illuminator for cultivating plant
06/07/1988US4749915 Microwave powered electrodeless light source utilizing de-coupled modes
06/07/1988US4749914 Circuit system for igniting and operating a high-pressure discharge lamp, particularly a sodium vapor lamp
06/07/1988US4749913 Operating circuit for a direct current discharge lamp
06/07/1988US4749909 Compact igniter for discharge lamps