"Rinkinys skautui" - labai paprasta amplitudines televizijos schema. Gali pakartoti bet kuris .... Geltonas LED spindulys , koncentruotas su "lupa" gerai matosi uz 50m . Su Fresnelio linze rezultatas butu dar geresnis. Jei spindulys matosi ryskiai , tai ir TV signalas bus matomas gerai. Belieka pasigaminti patiems ir sita teigini patikrinti. Jei vietoj LED idesite "laser pointer" tai su televizijos RX ir monitoriumi , teks begti tolyn keleta km.
This circuit is very easy to repeat - would be great kit for kids. Yellow LED is visible in 50 meters range if magnifying glass is used. With Fresnel lens (cheap rectangular A4 page magnifier) the range would be even better. If the beam is bright then TV signal is OK too. If you change LED with a laser pointer then you'll have to go few kilometers away.
This circuit is very easy to repeat - would be great kit for kids. Yellow LED is visible in 50 meters range if magnifying glass is used. With Fresnel lens (cheap rectangular A4 page magnifier) the range would be even better. If the beam is bright then TV signal is OK too. If you change LED with a laser pointer then you'll have to go few kilometers away.
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