0 Schematic of the 13.8V 30-40A Power Supply

Ένα πάρα πολύ καλό και δυνατό τροφοδοτικό χρήσιμο για όλους. Διαθέτει προστασία βραχυκυκλώματος και υπέρτασης.

 

Πηγή: http://agurk.dk/bjarke/Projects/PowerSupplyFET/PowerSupplyFET.htm

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0 1296MHz PLL FM ATV

Πηγή:
http://www.qsl.net/va3iul

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0 LCD SWR Meter

Η γέφυρα μέτρησης είναι σχεδιασμένη για μετρήσεις σε VHF και UHF μάξιμουμ ισχύος είναι τα 100Watt.
Για την κατασκευή μας, είναι προτιμότερο να χρησιμοποιήσετε το MCP6022, αλλά επίσης, οποιοσδήποτε άλλος τελεστικός θα λειτουργούσε χωρίς πρόβλημα ως απομονωτής/ενισχυτής τάσης. Τα τρίμερ των 10 στροφών χρησιμοποιούνται για ρυθμίσεις ενώ ένας σύνδεσμος πέντε ακίδων συνδέει την πλακέτα της CPU με τον αισθητήρα. Εάν κριθεί απαραίτητο, μπορεί να χρησιμοποιηθεί μια χάντρα φερρίτη για την καταστολή τυχόν υπάρχουσας RF μέσα στις συνεχείς προς μέτρηση τάσεις.
Ο σκοπός των πυκνωτών που μαρκάρονται στην πλακέτα σαν CX, είναι ο ίδιος με τη χάντρα φερρίτη.
Πηγή: circuits

Code Hex:
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:0E0CE0002A08D20729080318290FD107080097
:02400E00303F41
:02401000FC3F73
:00000001FF

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0 Ρυθμιζόμενο τροφοδοτικό 1,2 – 27 volt

Τα υλικά

BR1 = 50V 1A (ou plus)

C1 = 470 μF 40V

C2 = 47 μF 40V

C3, C4 = 0,1 μF

R1 = 220 Ohms

R2 = 4K7

R3 = 1K

D1, D2 = 1N4001

LED = LED verte

IC1 LM317T

P1 = 2K5

T1 = BC557

TR1 = 12 V 1 A

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0 Βολτόμετρο 0-99V Με τον PIC12F675

Αυτό το βολτόμετρο είναι βασισμένο στον PIC12F675  η ανάλυση του είναι 10bit και μετρά από 0-99V DC
Για Display μπορείτε να βάλετε οποίο σας αρέσει αρκεί να είναι κοινής καθόδου

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0 Digital Voice Recorder ISD2560

Αυτό το project βασίζεται στο ISD2560P που σου επιτρέπει να γράφεις (voice) και να παίζεις (playback) 60sec σε πάρα πολύ καλή ποιότητα. Όπως βλέπεται στο σχήμα χρησιμοποιείται για να γράψουμε τον ήχο πυκνωτικό μικρόφωνο. Ανάλογα με τον τύπο του ISD... αλλάζει ο χρόνος playback και record.
Καλή επιτυχία.

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0 CW Practice oscillator

Description.
A circuit diagram that can be used for the generation of CW Morse code is shown here.This circuit can be very useful those who would like practice Ham Radio.The circuit is nothing but an astable multivibrator based on NE 555.The frequency of oscillations of the circuit depends on the components R1,R2 & C1.The circuit can be powered from a 9V PP3 battery.

Notes.
• The POT R2 can be used for frequency adjustments.
• POT R3 can be used for volume adjustments.
• The switch S1 can be a Morse code key.

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