The two industrial products designed by Medi that are used in the quality control section of Lamp manufacturing industry are HF Generator standard type and Hand Held type.

 There are a lot of devices that check the tubes after each process. H.F generator is one among them and is used to check the tube after the gas filling, and before any further process is done on it. Conventional lighting methods can't be used since the test is to be done before the caps are fitted.

 Technically H.F generator is a device that generate a high frequency electro-static field. This field is strong enough to ionize low pressure gas filled tubes near it and make them glow. Since the H.F generator do not need any physical or electrical contact, it is very convenient to check the tubes before fixing the connection terminals.

 MEDI has designed and developed an H.F generator for tube light manufactures. With the latest integrated circuits and switching devices like MOSFETs the MEDI H.F generator is very small in size and light in weight. Due to its high power radiation MEDI H.F generator is capable of glowing up to 5 tubes simultaneously. This is very convenient for detecting and replacing defective tube lights manually. For automatic manufacturing sections special design of H.F generator is available.

 We can conveniently place the H.F generator near the conveyer belt, so that if the vacuum inside a tube coming near to the device is perfect, it will glow. This glow can be checked with a Medi GLOW SENSOR or its equivalents most probably available in tube light assembly line. The glow sensing and replacing of defective tube lights can also be done manually. Then HF gen­erator to glow more tubes simultaneously will be practical.

 This is an improved version of ordinary H.F Generator and the latest development of Medi. This instrument is much ideal for testing the CFTLs and FTLs during packing.

 In ordinary H.F Generator the RF radiation is produced from the radiating aerial fixed on the rear side of the instrument. Since the radiating aerial is the part of the tuned circuit that produce the high power radiation the length of the aerial can not be changed. This means that the radiating aerial can not be extended with wires.

 In practical use it is found that the user usually try to extend the RF radiation using wires. This was the motivation for designing the Handheld type HF generator. This instrument has two unit :- a base unit and a hand held unit. From the handheld unit there will be an RF cable which can be plugged to RF socket provided on the base unit. Now the user can freely move the handheld unit and touch the RF radiating tip of the handheld unit at the tip of the CFTL / FTL under testing.