Guest incepatorul_tm Posted July 28, 2009 Share Posted July 28, 2009 buna ziua! va rog sa ma ajutati daca aveti o schema de frecventmetru radiofrecventa, sa acopere frecventele de la 100 khz pana la 30 mhz. Link to comment
vio2007 Posted August 6, 2009 Share Posted August 6, 2009 Frequency Counter variante de frecventmetre : a - cu CI compatibile TTL ,seria 74HC/74HCT,masoara pana pe la 50Mhz.Scheme si pcb in revista ConexClub. b - cu microcontroler PIC XXXX , masoara pana la 50Mhz ,unele pot fi utilizate ca scala numerica . Daca se foloseste divizor de frecventa (prescaler),frecventa masurata poate ajunge la 1Ghz (sau mai sus functie de prescaler). http://www.g7ltt.com/njqrp/ik3oil-counter.pdf http://www.hamradioindia.org/circuits/fcountlcd.php Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now