FET
Το FET είναι τρανζίστορ που το ρεύμα του οφείλεται σε ένα είδος φορέων , σε αντίθεση με το διπολικό τρανζίστορ. Όπως στο διπολικό τρανζίστορ το ρεύμα ελέγχεται από το πολύ μικρό ρεύμα βάσης, στο FET το ρεύμα ελέγχεται από μια πολύ μικρή τάση στην πύλη (G). Ένα βασικό πλεονέκτημα των FET είναι η πολύ μεγάλη αντίσταση εισόδου , και ένα βασικό μειονέκτημα η μικρή απόκριση τους σε υψηλές συχνότητες.
Κάθε FET έχει τρείς ακροδέκτες : G (Πύλη), D ( απαγωγός), S (πηγή).
¨Ενα FET μπορεί να είναι διαύλου τύπου n ,όπου το ρεύμα οφείλεται σε ηλεκτρόνια η διαύλου τύπου p ,όπου το ρεύμα οφείλεται σε οπές.
Τα FET μπορεί να είναι JFET η JGFET ( MOSFET).
JFET
Σε ένα JFET υπάρχει ρεύμα Id μέσω του διαύλου το οποίο βασικά ελέγχεται από την Vgs. Επειδή η Vgs είναι ανάστροφη πόλωση , όταν γίνει αρκετά μεγάλη , κλείνει τελείως ο δίαυλος και έχουμε Id=0 τότε Vgs=Vp , θα λέμε τάση φραγής.
Όταν η Vds είναι μεγαλύτερη της Vp τότε η λειτουργία λέγεται , πέραν της φραγής και είναι η πιο συνηθισμένη λειτουργία των FET. Στους ενισχυτές τα FET πολώνονται σε περιοχή πέραν της φραγής.
Σε περιοχή προ της φραγής τα FET χρησιμοποιούνται σαν VVR (ελεγχόμενη αντίσταση ), δηλαδή η αντίσταση του διαύλου ρυθμίζεται από την Vgs.
Στο σχήμα 1.α. φαινεται ο συμβολισμός ενός JFET τύπου n & p.
Στο σχήμα 1.β. είναι οι χαρακτηριστικές ενός τύπου n .
Για Vds από 0 έως Vp ( για Vgs=0) , έχουμε την περιοχή προ της φραγής, που το JFET συμπεριφέρεται σαν αντίσταση ελεγχόμενη από την Vgs.
Μετά την τάση φραγής έχουμε πολύ μικρή αυξηση του Id , με την αύξηση του Vds, μέχρι την τιμή της Vds που το ρεύμα αυξάνεται απότομα.
Οι τιμές της Vgs είναι αρνητικές για τρανζίστορ τύπου n.
Στο σχήμα 1.γ. βλέπουμε , για σταθερό Vds , το ρεύμα να μηδενίζεται για Vgs=Vp και να γίνεται μέγιστο Idss για Vgs = 0.
Όπου id=Idss.(1-Vgs/Vp)2
Διαφορίζοντας Δid/ΔVgs βρίσκουμε την διαγωγιμότητα gm=-(2Idss/Vp).(1-Vgs/Vp).
Για τα JFET τύπου p ισχύουν τα ίδια με αντίθετες πολικότητες των τάσεων.
id και rd είναι αντίστοιχα το ρεύμα και η δυναμική αντίσταση του διαύλου.
gm=Δid/ΔVgs διαγωγιμότητα του FET για σταθερό Vds. Η διαγωγιμότητα δεν είναι σταθερή όπως φαίνεται απο το σχήμα 1. γ. , αφου η καμπύλη δεν είναι ευθεία.
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)
Στο σχήμα 2 έχουμε τις χαρακτηριστικές του JFET.
![](data:image/png;base64,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)
Στο σχήμα 3. 'εχουμε πόλωση με διαιρέτη τάσης στην πύλη του τρανζίστορ και θέλουμε να υπολογίσουμε τα στοιχεία του ενισχυτή , χρησιμοποιώντας τις χαρακτηριστικές του σχήματος 2.
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)
Στο σχήμα 1.α. φαινεται ο συμβολισμός ενός JFET τύπου n & p.
Στο σχήμα 1.β. είναι οι χαρακτηριστικές ενός τύπου n .
Για Vds από 0 έως Vp ( για Vgs=0) , έχουμε την περιοχή προ της φραγής, που το JFET συμπεριφέρεται σαν αντίσταση ελεγχόμενη από την Vgs.
Μετά την τάση φραγής έχουμε πολύ μικρή αυξηση του Id , με την αύξηση του Vds, μέχρι την τιμή της Vds που το ρεύμα αυξάνεται απότομα.
Οι τιμές της Vgs είναι αρνητικές για τρανζίστορ τύπου n.
Στο σχήμα 1.γ. βλέπουμε , για σταθερό Vds , το ρεύμα να μηδενίζεται για Vgs=Vp και να γίνεται μέγιστο Idss για Vgs = 0.
Όπου id=Idss.(1-Vgs/Vp)2
Διαφορίζοντας Δid/ΔVgs βρίσκουμε την διαγωγιμότητα gm=-(2Idss/Vp).(1-Vgs/Vp).
Για τα JFET τύπου p ισχύουν τα ίδια με αντίθετες πολικότητες των τάσεων.
Ισοδύναμο FET
Εδώ έχουμε ένα πολύ πιο απλό ισοδύναμο από το διπολικό τρανζίστορ, διότι η αντίσταση εισόδου είναι πολύ μεγάλη , δηλαδή η είσοδος είναι κομμένη.id και rd είναι αντίστοιχα το ρεύμα και η δυναμική αντίσταση του διαύλου.
gm=Δid/ΔVgs διαγωγιμότητα του FET για σταθερό Vds. Η διαγωγιμότητα δεν είναι σταθερή όπως φαίνεται απο το σχήμα 1. γ. , αφου η καμπύλη δεν είναι ευθεία.
Στο σχήμα 2 έχουμε τις χαρακτηριστικές του JFET.
Από τις χαρακτηριστικές σχ 2. έχουμε περίπου Vgs=-2volt , Vds=10 volt $ Id = 5mA.
Αν επιλέξουμε Rs = 1k τότε Vs=Id.Rs=5volt , Vd=15 volt & Rd=(Vdd-Vd)/Id =1K
Vg= 3 volt και από το διαιρέτη τάσης R1,R2 Vg= R2.Vdd/(R1+R2) ., 3=R2.20/(R1+R2) , 17R1/3 = R2
Αν επιλέξουμε R2=1M ώστε να μην μειωθεί η αντίσταση εισόδου τότε πρέπει R2=5,6M.
Παρακάτω θα υπολογίσουμε τις επιδόσεις μιας τέτοιας ενισχυτικής βαθμίδας JFET με διαιρέτη τάσης.
Το ισοδύναμο κύκλωμα μιας ενισχυτικής βαθμίδας FET κοινής πηγής , με διαιρέτη τάσης είναι το εξής :
Όπου Rg= R1//R2
Εφ όσον στην είσοδο το ρεύμα θεωρείται σχεδόν μηδέν , η αντίσταση που βλέπει η τάση εισόδου είναι η Rin=Rg
Στην έξοδο η τάση εξόδου βλέπει αντίσταση Rout=Rd//RL
Για να υπολογίσουμε την ενίσχυση τάσης έχουμε :
Απότην είσοδο: Vi = Vgs + Id.Rs = Vgs + gm.Vgs.Rs = Vgs.(1 + gm.Rs )
Απότην έξοδο έχουμε: Vo =-Id.(Rd//RL )=-gm.Vgs.(Rd//RL)
Άρα: Av = Vo/Vi = - (Rd//RL) / (Rs + 1/gm)
ΣΧΗΜΑ 4.
Παρακάτω υπολογίζουμε τις επιδόσεις μιας ενισχυτικής βαθμίδας με FET τύπου n, στο α) το κύκλωμα όπου θεωρούμε ότι δεν υπάρχει ο πυκνωτής παράκαμψης της αντίστασης Rs. Στο β) το ισοδύναμο κύκλωμα χωρίς τον πυκνωτή.
Η σχέση 1. είναι η ενίσχυση με την αντίσταση Rs, η σχέση 2. η ενίσχυση αν βάλουμε τον πυκνωτή διέλευσης, οπότε Rs=0, και στην σχέση 3. η ενίσχυση αν η αντίσταση της πηγής θεωρηθεί αμέλητέα ως προς την αντίσταση εισόδου.
ΛΥΣΗ
Υπολογίζουμε το Id Vd=Vdd-Id.Rd Id=6mA.
Υπολογίζουμε την τάση Vg από τον διαιρέτη τάσης R1,R2: Vg= R2.Vdd/(R1+R2) = 2,1Volt.
Από τον τύπο :
Id=Idss.(1-Vgs/Vp)2 υπολογίζουμε την Vgs=-0,8 Volt. Άρα Vs=2,9 Volt Άρα Rs=Vs/Id=0,5 K
Υπολογίζουμε την : gm=-2Idss.(1-Vgs/Vp) = 3,6/KΩ.
Rin=Rg=R1//R2=0,4M
Rout=Rd=1K
Επειδή Rπ=0 η αντίσταση της πηγής, και βάζοντας τον πυκνωτή παράκαμψης Rs=0
θα έχουμε για την ενίσχυση τάσης :
Av=-gm.(Rd//Rl)=-1,8
Συνεχίζεται.......
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