AM detector

[contau]

i have made a AM detector. Anyone tell me about the quality of this detector?

 

[MrAl]

Hi,


Just a quick note...
Is that a very high current rectifier diode (25 amps)? That's not the right kind for something like this if it really is a high current diode
as the operating frequency is much lower than you really need for a detector diode.
Typical diodes used for this kind of thing are 1N4148 and germanium types the part numbers someone else here can provide
(like 1N34 or something like that).

 

[contau]

@MrAl How about RC circuit? do the RC values suit for overall circuit?

 

[Hero999]

You need a low pass filter which will cut-off above the highest frequency of the signal being modulated.

 

[audioguru]

The resistor values are very low and might load down the circuit feeding it.

 

[Hero999]

I forgot that load impedance must be factored in to the resistor calculation.

 

[contau]

I forgot that load impedance must be factored in to the resistor calculation.

this only need to use the circuit buffer to match the in-out impedance . i mean how the frequency respone of detector is. is it flat in audio freqs and does it need more components ?

 

[contau]

The resistor values are very low and might load down the circuit feeding it.

i don't understand ur mean ...can you say more informations?