Turning LEDs for the RA3AO transceiver. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Civil radio communications
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In the manufacture of the RA3AO transceiver, difficulties arise with turning the lenses of the AL307 LEDs. This operation can be easily done at home, if you take a contact from the female part of the plug connector with an outer diameter of 4 mm and an inner diameter of 2,5 mm. To do this, it is first necessary to separate the elastic halves of the contact with a screwdriver so that they are parallel to each other. Then, with a file, sharpen the ends of the contact as shown in the figure.
Clamp the resulting ring drill into the chuck of an electric drill and, taking the LED by the leads, press its spherical part against the rotating drill. In extreme cases, you can do without a drill, rotating the drill manually. The layer formed outside is easily removed with a knife. This method allows you to turn a set of LEDs without marriage in a matter of minutes, while during processing on a lathe, half of the diodes went into marriage due to the difficulties of mounting them in the machine chuck.
Author: M.Usolin, Klimovsk; Publication: N. Bolshakov, rf.atnn.ru
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