Frequency Doubler Digital Circuit. Note too that you might need to change which pin on the 595 you feed back to the pll. The two 0 0047 capacitors are your filter adjusting those will change how quickly your circuit will lock to 25 0568 mhz.
Zl2pd Cmos Hf Digital Dial Electronica from za.pinterest.com
Doubler digital frequency circuit editor electronic circuit published tuesday march 06 2012 doubler digital frequency circuit includes a simple and easy to understand. Sparked a need for a frequency multiplier to provide a 10 mhz frequency standard. For proof of concept it worked well.
Another all digital method from a xilinx engineer.
Consisting of r1 c1 and comparator u1 the delay circuit drives the xor gate s second input. Doubler frequency digital circuit application contained in the system electronics such as audio producing organ or keyboard. Consisting of r1 c1 and comparator u1 the delay circuit drives the xor gate s second input. This circuit doubles the input frequency.
