µC forms FM oscillator


Posted on Sep 8, 2012

A project required an inexpensive oscillator whose frequency increased step by step from 200 to 400 Hz and then decreased to 200 Hz. The first step was to design a VCO with a staircase driver. However, this approach entailed at least four ICs and many discrete components. An alternative method (Figure 1) requires only one 16-pin µC (an MC68HC705KJ1, costing less than $1) and only a few external components.






Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Simple TV Remote Control Jammer
Another kind of relay driver board used to utilize your old PC
Vending Machine Controller
pic based wwvb clock
Loop Control Automatic Reversing Circuit



Top