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1 GHz Frequency Counter - This simple counter is useful for
frequency measurements of various wireless equipments, especially
transmitters, receivers and signal generators in VHF/UHF band
(circuit
added 8/06) |
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2.5 GHz Frequency counter - This project describes a very
powerful frequency counter. Very simple construction which everyone can
build. 6 LED display will present the frequency with 1kHz resolution and
RS232 communication to computer is available as option. The software has
also been implemented with some smart functions, for calculating
frequencies in receivers where IF is 455kHz or 10.7MHz. I present
schematic, PCB, components and window software.
.(design added 11/08)
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40/400MHZ Frequency Counter - Frequency counter is a very
important test instrument for Radio Amateurs, especially those who wish to
develop or test circuits. There are lots of frequency counters in the
market but building one was never so easy & exciting with Microprocessors
doing lots of work for us.
.(design added 11/08) |
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40+ MHz 5 Digit Frequency Counter with an AVR 2313 - (electronic
circuit added 7/03) |
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50 MHz Frequency Counter - This project is nice and small frequency counter
that reads frequency from 1 Hz to 50 MHz that I have modified from original designed
by Weeder Technologies . I have designed new PCB to fit with 16X1 LCD and change
source code for compatible with new small PCB Specifications, Auto-ranging with
floating decimal point., Up to 7 digits displayed on 1X16 LCD., Auto-adjusting gate
speed (0.1 sec to 1 sec)., Microcontroller-based circuitry provides for simplicity,
ease of assembly, and highly stable readout., Sensitivity approximately 100 mV RMS
(100 Hz to 2 MHz), 800 mV RMS @ 50 MHz., Input overload protected.
.(electronic
schematic added 11/08) |
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50 MHz Frequency Counter Voltage Meter & SwR/PWR Indicator - This is a
successor of the PIC16C71 4-digit LED f-counter & V-meter. Some hard to find parts
used in the previous version, which are out of production for some time, has been
omitted. A rather early PIC16C71 has also been replaced by 28-pin device
PIC16F876..... |
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50MHz Frequency Meter - This new 50MHz Frequency Meter is autoranging and
displays the frequency in either Hz, kHz or MHz. This makes the unit easy to
read, as it automatically selects the correct range for any frequency between 0.1Hz
and 50MHz and inserts the decimal point in the correct place for each reading. Note
that although we have specified this Frequency Meter at 50MHz maximum, most units will
be capable of measuring frequencies somewhat higher than this. In fact, our proto-type
meter was capable of making frequency measurements to above 64MHz.
..... |
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8 Hints for Making Better RF Counter Measurements - Agilent Application Note
(added 6/06) |
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AVR Frequency Counter - How would you like a 40 MHz frequency counter for
under $50? What if I told you it also had an 8 digit LCD display, optional offsets for
use in a receiver or transceiver, 10 Hz (even 1 Hz!) resolution, and also a six
channel digital voltmeter built in? Direct reading with prescalers in the VHF version?
Oh, and optional PC telemetry so you can watch the output on a PC, log the results, or
graph drift? Well, read on!.... |
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Exclusive 2.5 GHz Frequency Counter with Blue 2x16 LCD display - This
project explain a very powerful frequency counter which has many useful software
functions. The software can add or subtract 3 different IF frequencies (±455 kHz
,±10.7 MHz and ±21.4 MHz). You have also two level of resolutions, 1kHz and
100Hz.....(schematic added 04/05/06) |
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Frequency Counter - Frequency counter with output on 7-segment display
(circuit added 6/07) |
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Frequency Counter using PIC16C5x - Microchip Application Note Published
26-Aug-97.....[App Note] |
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Get six quick tips to make more accurate frequency measurements - Agilent
Application Note.....[App Note] |
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Making Low frequency measurements with a Frequency Counter - Agilent
Application Note.....[App Note] |
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MicroController Makes Effective Frequency Counter - 11/23/00 EDN-Design
Ideas EDN is migrating links. This link is not verified. Search the "title" +
EDN for new link. |
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PIC Frequency Counter - Programmable frequency meter with PIC16F84 and
UPB1505 prescaler (circuit added 8/06) |
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Simplified Analysis of Phase-Locked Loop Capture & Tracking Range AN 1200-7 -
Agilent Application Note (added 6/06) |
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Speed test times by utilizing the built-in features of your frequency counter -
Agilent Application Note.....[App Note] |
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Transition Counter Gauges Thermal Stability - 01/04/96 EDN-Design Ideas The
transition counter of Figure 1 is an easy way to determine if the temperature in a
heater is stable. The stable state maximizes the transitions. This circuit works
like a digital filter with controlled frequencies and is simpler than many other
analog- and digital-circuit alternatives.The..... [Design Idea by Jose Luis
Arce,Tecnosuma Havana, Cuba Jose Luis Arce,Tecnosuma Havana, Cuba] |
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