1. AM Modulator

2. Types of AM modulator There are low-level and high-level modulators.
Low-level modulators generate AM with small signals and must be amplified before transmission.
High-level modulators produce AM at high power levels, usually in the final amplifier stage of a transmitter.

3. Low level modulator

4. Low level modulator waveforms

5. Collector modulated Class C amplifier

6. Collector Bias
Carrier Wave
Output at collector
(without tank circuit)
AM waveform due to flywheel

7. Balanced Modulator
A balanced modulator is a circuit that generates a DSB signal, suppressing the carrier and leaving only the sum and difference frequencies at the output.

9. Balance Demodulator