AM modulator 1.2 version

195

03:15:21

It's a just an AM modulator with a easy and simple idea, i use the transistor in mode switcher, the LF Signal feed the transistor and HF give him the rhythm the result a HF signal hold the LF message signal.

published 9 years ago

thebugger

9 years ago

It's called PAM modulation

hurz

9 years ago

After some reduction of modulation index and adding a filter at output to make it visible whats inside the chopped signal, this chopper modulator makes a nice AM signal. Because its multiplying the LF input with the carrier which is only LOW or HIGH, 0 or 1, 0 Volt or pass the LF signal level. Whatever You call it buggzy for yourself. I like to call it AM modulator. PAM sounds snooty and tries to hide what it actually is.

hurz

9 years ago

Check this http://everycircuit.com/circuit/4987352333680640

sandfree

9 years ago

Thinks for the adds it's very helpful, in the first i dont konw what it called, but i have this idea to make AM modulator you can just multiply the LF with the HF, but how i think to try a transistor like a switch it's worked but not perfect.

thebugger

9 years ago

Call it whatever you like it's PAM https://en.m.wikipedia.org/wiki/Pulse-amplitude_modulation

sandfree

9 years ago

In electronics, a chopper circuit is used to refer to numerous types of electronic switching devices and circuits used in power control and signal applications. A chopper is a switching device that converts fixed DC input to a variable DC output voltage directly. Essentially, a chopper is an electronic switch that is used to interrupt one signal under the control of another

hurz

9 years ago

Here is an example on how a chopper amp is used to measure uV DC voltages. Have fun! http://everycircuit.com/circuit/5755636629372928

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