http://www.davidbridgen.com/swpgen.htm, This is an edited version of the article which was published in "Electronics World".<br />The oscillator in this generator is the XR-2206. Its frequency is determined by the capacitor between pins 5 and 6 and the resistor on pin 7. Specifically, it depends, linearly, on the current drawn from pin 7, (which is internally biased to 3V.) This current passes through a base-emitter junction within the 2206, so the frequency is not linearly related to the resistance value. At least not in the simple implementations mentioned in the manufacturer’s data sheet. This is overcome in the control circuit described later.

The oscillator in this generator is the XR-2206. Its frequency is determined by the capacitor between pins 5 and 6 and the resistor on pin 7. Specifically, it depends, linearly, on the current drawn from pin 7, (which is internally biased to 3V.) This current passes through a base-emitter junction within the 2206, so the frequency is not linearly related to the resistance value. At least not in the simple implementations mentioned in the manufacturer’s data sheet. This is overcome in the control circuit described later. " /> http://www.davidbridgen.com/swpgen.htm, This is an edited version of the article which was published in "Electronics World".<br />The oscillator in this generator is the XR-2206. Its frequency is determined by the capacitor between pins 5 and 6 and the resistor on pin 7. Specifically, it depends, linearly, on the current drawn from pin 7, (which is internally biased to 3V.) This current passes through a base-emitter junction within the 2206, so the frequency is not linearly related to the resistance value. At least not in the simple implementations mentioned in the manufacturer’s data sheet. This is overcome in the control circuit described later. The oscillator in this generator is the XR-2206. Its frequency is determined by the capacitor between pins 5 and 6 and the resistor on pin 7. Specifically, it depends, linearly, on the current drawn from pin 7, (which is internally biased to 3V.) This current passes through a base-emitter junction within the 2206, so the frequency is not linearly related to the resistance value. At least not in the simple implementations mentioned in the manufacturer’s data sheet. This is overcome in the control circuit described later. " name="urltop" noresize scrolling="no" />  You dont seem to have a frames supported browser. Click here to visit the URL Add comment to URL View comments Report broken/missing link View related entites Back to previous page.