fm radio

(Sorry my English may be a bit bad) Hi :3, I wanted to make an FM receiver circuit, and its my nature that I don't like making a circuit without understanding how it works, plus how do I even recalculate it's values (since I'm using different components), and on my search I have come across two...

Hi, I am trying to make a simple fm tuner as per the circuit diagram attached. Problem is, BF494 transistors are not readily available in my locality. Hence, I have used 2N3904 transistors as an alternative choice but the tuner doesn't seems to work. Can this transistor be used in this circuit?

Hello everyone, First of all sorry for my bad english. I want to simulate on Proteus FM demodulation with 4046. I know that the center frequency Fo depends on the value of R1 and C1. I try to do this application circuit and it doesn't work too: I try to change the value of Fo according to the...

Hi guys, I have been using a pair of Sennheiser headphones for quite some time now (HDR 118). They offer good sound and sit comfortably, however they do work based on RF signals (863 - 865 MHz) and have been catching a lot of interference as of late. Instead of just getting a new pair of...

Hello, please, would some good person help me with analysis of this circuit (my guess it's a FM radio). My task is to revive it, however I don't quite know how. What I'd do: 1. Connect the circuit to 9 V voltage source 2. Divide the circuit to 2 parts - AC and DC 3. Search for voltage...