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Technology Stocks : JMAR Technologies(JMAR) -- Ignore unavailable to you. Want to Upgrade?

To: Starlight who wrote (3958)11/13/1997 12:43:00 AM
From: henry jakala  Read Replies (2) | Respond to of 9695
 
diodes are semiconductor devices which allow current to flow in a single direction only and no current flow in the opposite direction (diode in the "old days" were also tubes - anyone remember tubes in radios/tvs - hehe)

used in power supplies to rectify AC during the conversion process to DC

other types of diodes are used to regulate voltages to predetermined levels (zener diodes)

in rf tuning circuits (varactor) using the diode's capacitance characteristics in a reverse biased mode (no current flow) to vary the frequency at which the circuit tunes

BTW

anyone interested in MR heads might be interested in Plasma-Therm and recent sales of their equipment to Japanese MR head manufacturers

biz.yahoo.com



To: Starlight who wrote (3958)11/13/1997 12:49:00 AM
From: Richard N Lambert  Respond to of 9695
 
Betty;

Another thing you must consider during dental use is the need to keep the soft tissue in the tooth cool. A direct laser without a cooling system (water spray, etc) designed into the laser will kill the tooth.
There are other companies working on the dental laser (BLTI of one) that is far ahead. I would think that JMAR could volunteer their laser and to be incorporated into the next generation device. However, currently all devices are subject to multi-year FDA approval and clinical trials which would make it hard to convince someone to use JMAR laser (IMO).

Rich



To: Starlight who wrote (3958)11/13/1997 4:23:00 PM
From: Tulvio Durand  Respond to of 9695
 
diode 1. An electronic device that restricts current flow chiefly to one direction. 2. An electron tube having a cathode and an anode. 3. A two-terminal semiconductor device used chiefly as a rectifier. The diode referred to here emits light as in Light Emitting Diode or LED. LEDs are monochromatic and come operate at different wavelenghts or colors depending on the gas used. Higher power LEDs can be classified as lasers. Tulvio


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