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Επιστροφή στο Forum : Δίλημμα πυκνωτές σε LPF 1% η 5%?



Killo_Watt
15-12-20, 00:06
Θέλω να φτιάξω ένα low pass φίλτρο για τα βραχέα. Αν χρησιμοποιήσω πυκνωτές 5% κεραμικούς 500V θα υπάρξει διαφορά με το να χρησιμοποιήσω 1% 500V silver mica? Παίζει το tolerance του πυκνωτή ουσιαστικό ρόλο αφού είναι απλά ένα low pass φίλτρο...?:blink:


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genesis
15-12-20, 00:29
Η ανοχή δεν είναι τόσο σημαντική.
Ο τύπος του πυκνωτή όμως είναι πολύ σημαντικός. Οι silver mica πολύ καλύτεροι για RF.

MacGyver
15-12-20, 00:39
1000 βαττικέ, όλα παίζουν ρόλο, το θέμα είναι πόσο.

Σε όλες τις σχεδιάσεις βάζουν τις τιμές που υπάρχουν στις σειρές δηλαδή στρογγυλοποιημένες.
Άρα αν σου λένε 470p μπορεί να είναι θεωρητικά 450 η 500.
Να πας σε ένα online simulator να παίξεις με τις τιμές για να δεις τις επιπτώσεις.

-Πόσο περισσότερο αξίζουν οι 1% και προβληματίζεσαι;

Killo_Watt
15-12-20, 15:08
θέλω περίπου 30 πυκνωτές για όλες τις μπάντες. κεραμικούς έχω σε stock και είναι πάμφτηνοι, οι silver mica έχουν 1.5ε ο ένας!!!