Hi ,
I hav been given this circuit as part of a report in college , it is a receiver circuit ,
the transmitter being an audio signal , pulse position modulated by a 555 times and transmitted by an LED .
the receiver is this
**broken link removed**
it is broken down into 2 main things ,
an active High pass filter
**broken link removed**
and an audio amplifier with a basic low pass filter
**broken link removed**
can anyone explain , or even point me towards sites or ebooks that will help me understand how this circuit demodulates the Pulse position modulated signal ?
I hav been given this circuit as part of a report in college , it is a receiver circuit ,
the transmitter being an audio signal , pulse position modulated by a 555 times and transmitted by an LED .
the receiver is this
**broken link removed**
it is broken down into 2 main things ,
an active High pass filter
**broken link removed**
and an audio amplifier with a basic low pass filter
**broken link removed**
can anyone explain , or even point me towards sites or ebooks that will help me understand how this circuit demodulates the Pulse position modulated signal ?