You cannot get it more simple than this, a 1 transistor CW filter. This filter is build according to the (surprise !) Multiple Feedback BandPass Filter (MFBPF) topology. Below, you see the circuit, originally designed by KE3IJ (alas now SK).
[…]
|
||||||
|
Now that the basic receiver is working, what do I want to add to consider the receiver ‘complete’ ? This is the current set-up : The following things I would like to add: S-meter : shows the strength of the received signal. Based on AF signalCW filter : Multiple Feedback Band-Pass filter, 1 or […] An attenuation network is often used in devices like a (digital) voltmeter, in oscilloscopes, etc. It offers the possibility to expand the input range of the measurement tool and thus makes it more versatile. Usually the attenuation network is build with a couple of resistor as shown in fig. 1. If the input resistance […] |
 |
|||||
|
Copyright © 2024 To create is to live - All Rights Reserved Powered by WordPress & Atahualpa |
||||||
Recent Comments