Am Modulator

[vikaschawlavc]

Can Anyone Give Me Am Modulator Circuit ( Without Using Ic's) .

Ple Help Me!!!!!!!!!!!!!

 

[raviram87]

wat else do u expect to use?

 

[JimB]

Try these two circuits, no integrated circuits there.

JimB

 

[mvs sarma]

Use diode ring modulator. it might need toroid input and output transformers, if you are working in RF range. otherwise suitable transformers may be used.

Next possibility is to use Mini Circuits Mixers like SBL1, etc

 

[on1aag]

Hi Vikaschawlacv,

Here's one, . . . of many.

on1aag.

 

[RadioRon]

Try these two circuits, no integrated circuits there.

JimB

I like these answers. The scary thing is that I understand them. Yup, we must be "geezers".

 

[Nigel Goodwin]

But did you understand the question?, everyone seems to have assumed an AM radio transmitter, but his question was far more vague than that.

 

[Hero999]

I understand the MOSFET idea but not the valve idea as I'm too young to understand that.

 

[umar karim]

Can Anyone Give Me Am Modulator Circuit ( Without Using Ic's) .

Ple Help Me!!!!!!!!!!!!!

there are different circuits employing AM.you can search the net yourself if you want to. i will mention the names.
AM using lograthimic amplifiers
using nonlinear devices with a bp filter
bridge diode modulator
ring modulator.

regards

 

[JimB]

But did you understand the question?

Yes the question is as bad as it gets, but unfortunately the only AM modulators I know are radio devices.
But at least I did suggest something without an IC.

JimB

 

[Nigel Goodwin]

Yes the question is as bad as it gets, but unfortunately the only AM modulators I know are radio devices.
But at least I did suggest something without an IC.

I've no problem with valves, although the cathode follower circuit is a bit 'nasty' I far prefer the normal anode modulation using a transformer as your second example. You can also cathode modulate the PA valve, which is probably the simplest method? - but it suffers from similar limitations as the cathode follower example.