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Das Elektroniker-Forum • Thema anzeigen - Drehspulmesswerk

Drehspulmesswerk

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Moderator: dussel07

Drehspulmesswerk

Beitragvon frank_w » 13.11.2017, 09:41

Hallo,
wie kann ich ein analoges Drehspulmesswerk gegen Überstrom schützen?

Mein Meßaufbau:

Variables Gleichspannungsnetzteil 0-50V, parallel Spannungsmesser, in Reihe Strommesser 1mA, Ri 1KOhm und eine Diode in Sperrrichtung.

Bei der Schaltung will ich die Durchbruchspannung einer Diode ermitteln.

Wie kann ich nun den Strommesser gegen Überstrom schützen?

Ich hatte mal eine Schaltung im Netz gefunden aber nicht den Link gespeichert.

Gruß Frank
frank_w
 
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Re: Drehspulmesswerk

Beitragvon alterhase » 13.11.2017, 09:58

Löten verbindet ...manchmals. :mrgreen:
73 55
alterhase
 
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Re: Drehspulmesswerk

Beitragvon frank_w » 13.11.2017, 18:30

Danke für die Kopfnus.

Naja Sperrspannung bis 1000V ist aber hier im Forum nicht erwünscht.

Gruß Frank
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Re: Drehspulmesswerk

Beitragvon topas » 13.11.2017, 19:21

Funkenstrecken mit zwinker, zwinker 50V Hochspannung auch nicht.
:D :D
Cooles Forum
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