Phase-Locked 20-Mhz Oscillator


Posted on Dec 27, 2012

This circuit produces a 20-MHz clock phase locked to a 10-MHz clock present in the Apple MAC II. To generate


Phase-Locked 20-Mhz Oscillator
Click here to download the full size of the above Circuit.

the 20-MHz signal, the circuit produces a 25 ns negative-going pulse delayed 50 ns from the falling edge of the 10-MHz Nubus clock input at point E. NORing that pulse with the Nubus clock produces the 20-MHz clock at point G. Applying the 25-ms pulse to the set input of an S/R flip-flop and the Nubus clock to the reset input results in a 10-MHz square wave at F.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

500mW FM transmitter
Decibel-o-meter and white noise generator
Reverse engineering the Elco heating protocol
Digital Clock
Simple Power Supply Suits VoIP/PoE Applications
drawing Any idea which software was used to generate these circuit diagrams
Voltage Multiplier for Power LED Driver
Instrument panel lamp dimmer control Circuit
TV REMOTE JAMMER CIRCUIT USING 555 TIMER
Ammo Box Sequencer
Interpolating Scanner Circuit
Wearable medical devices voice alarm circuit diagram



Top