VCO in AN-299

[Paul Perry]

At 10:29 AM 12/08/98 +0100, jorgen.bergfors wrote:
>Has anybody tried the VCO in National Semiconductor's Application Note 299, 
>figure 1? It is a 1 V/oct VCO that is supposed to be virtually free of 
>temperature dependence. And it does not use tempco resistors or heaters. 

....er, the CA3046 in this ckt IS the heater, at least, one of the transistors
 in it is. The circuit does work.
Incidentally, the vca ckt also in this app note is also designed by Jim
Williams..

paul perry melbourne australia