Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Need frequency counter schematic

Status
Not open for further replies.

arebee

Member level 2
Joined
Dec 2, 2001
Messages
53
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,288
Activity points
403
frequency counter schematic

Hi. I'm looking for a good, simple, relatively high frequency (~100MHz) frequency counter schematic or kit. Can anyone help? Thanks.
 

gabi_g

Newbie level 6
Joined
May 17, 2001
Messages
13
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
27
frequency meter schematic

HI arebee!
Use uC (PIC or AVR) and prescaler for this project.
AT90S2313 is verry good for frequency counter (it have 16bit capture function on timer 1!).
gabi_g.
 

C

crackintosh

Guest
simple frequency counter schematic

I have this one!
Parameters:
F=100 Hz ... 1000 Mhz
Vin = 100mV ... 5V
I = 80 mA
Vsup= 5V

Based on AT89C51 and Diode Matrix Display.

gunivas@rol.ro
 

pool_77

Full Member level 3
Joined
Aug 8, 2001
Messages
183
Helped
5
Reputation
8
Reaction score
3
Trophy points
1,298
Location
EU
Activity points
1,267
conter schematic

try to search www, there are a many schematic with PIC 16C84
pool_77
 

froggy

Member level 5
Joined
Jul 6, 2001
Messages
84
Helped
3
Reputation
6
Reaction score
1
Trophy points
1,288
Activity points
699
frequency counter schematic 250mhz

Arebee, here is a link of an old proven counter based on a c84:
http://www.piclist.com/techref/piclist/weedfreq.htm

This design counts from 1Hz-50Mhz, but that is using a old c84 w 4Mhz xtal. With an F84A using 20Mhz it should be able to count up to 250Mhz (depending on the input circuitry)
Sensitivity approximately 100 mV RMS (100 Hz to 2 MHz), 800 mV RMS @ 50 MHz

/Froggy
 

T

THE BORG

Guest
www.qsl.net/yo5ofh/pic

i recomend a bit scope as a kit


it is able to count to 1 ghz uses a pic877
has some other features and you can export data to a pc from it
it has four channels of 100mhz bandwidth scope
a mv meter and a 1 ghz counter

all in one

cost about 280 euro to get the full kit

assembled in about a day solid
 

T

THE BORG

Guest
counter schematic 250mhz

i recomend a bit scope as a kit


it is able to count to 1 ghz uses a pic877
has some other features and you can export data to a pc from it
it has four channels of 100mhz bandwidth scope
a mv meter and a 1 ghz counter

all in one

cost about 280 euro to get the full kit

assembled in about a day solid

my advice is to visit the local emporium and just spend 130 -140 euro

and buy one new {i get a 2 ghz lcd for this here}

some nice counters are very cheep when all the sums are done it works to the same
 

mabusoe

Junior Member level 3
Joined
Jun 12, 2001
Messages
26
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Canada
Activity points
158
site:www.edaboard.com frequency counter

These PIC based Frequency Meters do not depend on the speed of the MPU too much. It has mainly to do with the speed of the gate at the input of the counter. So a 20Mhz device will not give you any more than the 4MHz component. Here is one that is interesting:

Frequency meter with PIC 16F84
 

froggy

Member level 5
Joined
Jul 6, 2001
Messages
84
Helped
3
Reputation
6
Reaction score
1
Trophy points
1,288
Activity points
699
frequencies counter schematic

mabusoe, if you check the link you supplied, you will find that it's exactly the same as the one I gave earlier. And you are of couse right about the input gate, thats why I said "depending on the input circuitry" in my post. But you need a fast input circuit AND a fast MCU (or a external prescaler), thats why I suggested to raise the xtal freq.

/Froggy
 

christensen

Newbie level 1
Joined
Oct 15, 2009
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
London
Activity points
1,284
Re: frequency meter schematic

HI arebee!
Use uC (PIC or AVR) and prescaler for this project.
AT90S2313 is verry good for frequency counter (it have 16bit capture function on timer 1!).
gabi_g.
hi,

can you please give me a code example, in C if it's possible?
i'm struggling to write a frequency counter for Attiny2313.

thanks in advanced.
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top