Develop PLL's

I'm a student of engeneer of telecommunication in Spain, and i will be very pleased if you would send me some information of PLL parts, like VCO's phase detectors, etc.
Sorry for my bad english. I´m trying to develop educational equipment for communications, in special a PLL.

Thank you very much for your support, I hope to recevie a lot of your help

PLL simulation

I thought this may be of interest...

http://www.spiceage.com/Spiceage/pllx.htm

... a demo of a PLL simulation