Rf Modulator | Electronic Project Circuits

Posts Tagged ‘rf modulator’

Simple 27 MHz Receiver

This is a simple RF receiver mainly for low-distance digital radio receiver application. The analog output of this circuit should be connected to a schmitt-trigger signal conditioning circuit with a proper value capacitor (from collector of T3). L1 for 27Mhz is about 10 turns, 6 mm diameter coil body

Read More Source:http://jap.hu/electronic/sregrcvr.html
Thank you.

Be the first to comment - What do you think? Posted by admin - February 7, 2008 at 11:47 pm

Categories: RF-Radio Frequency Tags: 27MHz receiver, rf modulator, RF-Receiver

300 MHz Prescaler by MCT10280

A preamp that drives the CMOS counter input and a divide by 10 prescaler to extend the range of A Little More Serious Frequency Meter. The MCT10280 prescaler can be set to divide by 80, 40, 20, or 10, as a function of which pins are tied to the power supply. I set this one to divide by 10 since it is adequate for my needs, and the mental calculation of multiplying the meter reading by 10 is not taxing. One problem with the MCT10280 is that if it doesn’t have an adequate input, the output is very noisy, which shows up as counts in the couple MHz range on the frequency meter. This noise shows up if the signal amplitude the signal frequency is too low. For this reason, I only intend to use the prescaler with inputs between 10 MHz and 300 MHz.

Source:http://cappels.org/dproj/preamprescaler/preampresc.html

Related Links Circuit
Frequency Divider circuit
RF Modulator circuit

Be the first to comment - What do you think? Posted by admin - December 29, 2007 at 1:21 am

Categories: RF-Radio Frequency Tags: frequency divider, radio-frequency, rf modulator