ACL-FD: Frequency Demodulation Receiver Kit

Foster-Seely detector

Operating frequency: Adjustable from 400 KHz ~ 500 KHz
Input amplitude: 1V p-p

Ratio discriminator detector

Operating frequency: Adjustable from 400 KHz ~ 500 KHz
Input amplitude: 1V p-p

Phase Lock Loop detector

Operating frequency: Adjustable from 400 KHz ~ 500 KHz
Input amplitude: 1V p-p

Phase Detector and FM Quadrature Detector

Operating frequency: Adjustable from 400 KHz ~ 500 KHz
Input amplitude: 1V p-p

Amplitude Limiter

Operating frequency: 455 KHz
Input amplitude: 0.5 ~ 5V p-p
Output limited amplitude: 1.5V p-p

Low Pass Filter

 4th order butterworth filter
Cut-Off frequency : 3.4KHz

De-Emphasis Ckt - Time period of 50us

Audio output

Amplifier with Headphone
Audio amplifier gain: Adjustable

Switch faults

4switch faults are provided on board to study different effects on circuit.

Interconnection

2mm PCS2 socket

Test points

Test points are provided on board to observe intermediate signals.

Power supply

GND,+5V, +12V, -12V.

Study of FM Demodulators

Foster Seely detector

Ratio detector

Phase Locked Loop detector

Quadraturedetector

Study of Phase demodulator

Voice reception on various demodulation methods

Switch faults

Study of Detuned Resonance detector

Study of De-amphasis