Elektroniikkafoorumi • katso viestiketjua - Ajastimen virransyöttö 24v

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Elektroniikkafoorumi • katso viestiketjua - Ajastimen virransyöttö 24v

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Ajastimen virransyöttö 24v

Lähetetty: La Tammi 06, 2018 12:16

Kirjoittaja sepi

Hei

Ostin digitaalisen 24v ajastimen ja haluaisin kytkeä sen kuorma-auton 24v järjestelmään. Huomasin ohjeesta kuitenkin, että jännitevaihtelu saa olla -20% - +10%. Akkujännite nousee latauksen aikana 28,8v ja seisonna aikana voi laskea 23-24 volttiin.

Miten kytkisin ajastimen rikkomatta sitä? Laitanko regulaattorin väliin? 23v jännite riittäisi kellolle suoraan, mutta regulaattorille taitaa olla liian vähän. Onnistuisiko vastuksilla ja zener- diodilla jotenkin?

Kellon lisäksi minulla on 24v monitoimirele ja olisi hyvä, jos sen virransyötön saisi otettua samasta virtalähteestä kaiken varalta.

Ajastin