Launching the LDC-40 lamp. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Lighting
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For several years I have been using LDC-40 lamps with burned-out filaments in my greenhouse. To launch them, I assembled a reliable device that turns on the lamps for 0,5 - 1 sec. It will not be difficult to repeat this device, since all the parts for it are usually commercially available.
Diodes D226B can be replaced with any silicon ones with a direct current of at least 0,3 A. Capacitors C2 and C4 can be of the MGP, MBHz, MBM type for an operating voltage of at least 400 V.
Resistor R1 - for a dissipation power of at least 10 watts. It is wound on a 2 MΩ MLT-1 resistor with a nichrome wire, adjusting the resistance to the value indicated in the diagram using an ohmmeter.
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The cunning Japanese have developed and put on sale a very original device - an electronic matchmaker. The small-sized device (9x4 cm) is equipped with a microprocessor and a transceiver with a range of about 20 m.
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