Butent Pramoniniuose skaneriuose tikrina nuo 3 iki 20 dažnių Pvz: 23, 31, 39, 46, 54, 62, 70, 78, 85, 93, 101, 109, 117, 125, 132, 140, 148, 156, 164, 171, 179 Hz paprastesniu veikimo principas: The scanners use a UV-eye detector. This detector is a sealed, gas filled, UV-sensitive tube containing two electrodes connected to a source of DC voltage. When UV radiation of sufficient energy falls upon the electrodes, electrons are released and the inter-electrode gas becomes conductive, resulting in an electric current flow from one electrode to the other. The current flow starts and ends abruptly and is known as an “avalanche.” A very intense source of UV radiation will produce several hundred avalanches or pulses per second. With less radiation there will be fewer pulses per second. Upon total disappearance of flame, the detector output ceases. Thus, the presence or absence of pulses is an indication of the presence or absence of flame; the frequency of the pulses is a measure of flame intensity. When the pulses reach a sufficient level, the internal flame relay is energized "Erikas" <elaurinaitis@gmail.com> wrote in message news:gtomqt$3j8$1@trimpas.omnitel.net... > Taip ugnis nesidetektuoja. Ugnis "plazdena", todel reikia pasidaryti > aktyvu filtra tam reikalui. Kazkada maciau schema (ant lempu!) tam > reikalui. Galima butu surasti ir adaptuoti. > > Bye, Levas > > "AMB" <zzzv@fgfvgbh.lt> wrote in message > news:gtomne$3e3$1@trimpas.omnitel.net... >> koks yra ugnies sviesos bangos ilgis? gal ten yra ir infraraudonos >> sviesos? >> >>